All the JNTUH Pool

2015-02-11T14:32:00.002+05:30

Which of the following graphs is isomorphic to
Answer: (B)

2015-02-11T14:31:00.004+05:30

(1) A process executes the code
forkO; fork(); forkO; fork();
The total number of child processes created is (A) 3 (B) 15 (C) 7 (D) 8
Answer: (B)

(2) Assuming P != NP, which of the following is TRUE?

(A) NP-complete = NP
(B) NP-complete INTERSECTION P = 0
(C) NP-hard = NP
(D) P = NP-complete

Answer(B)

2015-02-11T14:29:00.002+05:30

Semester	Paper-1	Paper-2	Paper-3
December 2011	Download	Download	Download
June 2011	Download	Download	Download
December 2010	Download	Download	Download
June 2010	Download	Download	Download
December 2009	Download	Download	Download
June 2009	Download	Download	Download
December 2008	Download	Download	Download
June 2008	Download	Download	Download
December 2007	Download	Download	Download
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December 2006	Download	Download	Download
June 2006	Download	Download	Download
December 2005	Download	Download	Download
June 2005	Download	Download	Download
December 2004	Download	Download	Download

2015-01-11T14:40:00.003+05:30

BOHR MODEL electron around center speed
light colour and orbite
http://hyperphysics.phy-astr.gsu.edu/hbase/bohr.html
electron linear speed around center
v = 2.18x10^6 m/s

Marosz (me )
8 km/s = 8 000 m/s

it is very important problem on Earth

how heavy is electron on Earth

how heavy is electron in Universe

2015-01-11T14:39:00.001+05:30

For any student of Computer Sc he/she must be excelled in:

Discrete Structures

Sets, relation, Functions, Pigeonhole Principle, inclusion-Exclusion Principle, Equivalence and Partial orderings, elementary counting techniques, Probability, Measure(s) for Information and total information.

Compatibility

Model of computation-Finite Automata, Pushdown Automata, Non-determinism and NFS, DPDA and PDAs and languages accepted by these structure, Grammars languages, non compatibility and example of non computable problems

Graph

Definitions walks paths, trails, connected graphs, regular and bipartite graphs, cycles and circuits, tree and rooted tree, spanning trees, eccentricity of a vertex radius and diameter of a graph, central graphs, centers of a tree, Hamiltonian and Eulerian graphs, planar graphs

Group

Finite field and error correcting / detecting codes

Computer Arithmetic

Propositional (Boolean), Predicate Logic, Well-formed-formulae (WFF), Satisfiability and Tautology

Logic Families

TTL, ECL and C-MOS gates. Boolean algebra and Minimization of Boolean functions, Flip-flops-types, race condition and comparison. Design of combinational and sequential circuits

Programming in C and C++

Programming in C

Elements of C: Tokens, identifiers, data types in C. Control structures in C: Sequence, selection and iteration(s). Structured data types in C: arrays, struct, union, string, and pointers

C++ Programming

Elements of C++ - Tokens, identifiers. Variables and constants, data types, Operators, Control statements. functions, parameter passing, Class and objects. Constructors and destructors. Overloading, Inheritance, templates, Exception handling

Relational Database Design and SQL

Relational Database Design

E-R Diagrams and their transformation to relation design, normalization- INF, 2NF, 3NF and 4NF. Limitations of 4NF and BCNF

SQL

Data definition language(DDL), Data manipulation language(DML), Data control language (DCL) commands. Database objects like- Views, indexes, sequences , synonyms, data dictionary.

Data and File Structures

Data Structure

Data, Information, Definition of data structure. Arrays, stacks, queues, linked lists, trees, graphs, priority queues and heaps

File Strucure

Fields, records and files. Sequential, direct, index-sequential and relative files. Hashing, inverted lists and multi-lists. B trees and B+ trees

Computer Networks

Network Fundaments

Local area Network (LAN), metropolitan Area Network(MAN), Wide area Network(WAN), Wireless Network, Inter Network

Reference Model

The OSI model, TCP/IP model

Data Communication

Channel capacity. Transmission media- Twisted pair, Coaxial cables, Fiber optic cables, Wireless transmission- radio, microwave, infrared and millimeter waves. Light wave transmission. Telephones- local loop, trunks, multiplexing, switching, narrowband ISDN, broadband ISDN, ATM, High speed LANS, Cellular radio Communication. satellite- Geosynchronous and low-orbit

Internetworking

Switch/Hub, Bridge, router, Gateways Concatahetsd virtual circuits, Tunneling, Fragmentation, Firewalls

Routing

Virtual circuits and datagrams, Routing algorithms, congestion control

Network Security

Cryptography- Public key, Secret Key. Domain Name System (DNS)- Electronics mail and worldwide web (WWW). The DNS Resource Records, Name Services. E-Mail Architecture and Servers

System Software and Compilers

Assembly language fundamentals (8085 based assembly language programming). Assemblers- two-pass and single-pass. Macros and macro-processors
Loading, linking, relocation, program relocatability. Linkage editing
Text editors. Programming Environments. Debuggers and program generators
Compilation and Interpretation. Bootstrap compilers. Phases of compilation process. Lexical analysis. Lex package on Unix system
Context free grammars. Parsing and parse trees. Representation of parse(derivation) trees as rightmost and leftmost derivations. Bottom up parsers- shift-reduce, operator precedence. and LR. YACC package on Unix system
Top-down parsers- left recursion and its removal. Recursive descent parser. Predictive parser, Intermediate codes- Quadruples, Triples, Intermediate code generation, Code generation, Code optimization

Operating Systems & Unix Case Study

Memory Management

Virtual memory, paging, fragmentation

Concurrent Processing

Mutual exclusion. Critical regions, lock and unlock

Scheduling

CPU scheduling, I/O scheduling, Resource scheduling, Deadlock and scheduling algorithms. Banker's algorithm for deadlock handling

The Unix System

File system, process management, borne shell, shell variables, command line programming

Filters and Commands

pr, head, tail, cut, paste, sort, uniq, tr, join, etc., grep, egrep, fgrep, etc., sed, awk, etc.

System Calls (like)

creat, open, close, read, write, iseek, link, unlink, stat, fstat, umask, chmod, exec, fork, wait, system.

Software Engineering

System Development Life Cycle (SDLC)

Steps, Water fall model, Prototypes Spiral model

Software Metrics

Software Project Management

Software Design

System design, detailed design. function oriented design, object oriented design, user interface design. Design level metrics

Coding and Testing

Testing level metrics. software quality and reliability. Clean room approach, software reengineering

Mobile Computing

Mobile connectivity- Cells, Framework, Wireless delivery technology and switching methods, mobile information access devices, mobile data internetworking standards, cellular data communication protocols, mobile, computing applications. Mobile databases- protocols, scope, tools and technology. M-business.

Simple Applications (in windows)

Scrolling, splitting views, docking toolbars, status bars, common dialogs.

Advanced Windows Programming

Multiple Document Interface (MDI), Multithreading. Object linking and Embedding (OLE). Active X controls. Active Template Library (ATL). Network programming.

Digital Systems and Microprocessors

Digital Systems

Combinational Circuit Design, Sequential Circuit Design, Hardwired and Microprogrammed processor design, Instruction formats, Addressing modes, Memory types and organisation, Interfacing peripheral devices, Interrupts

Microprocessors

Microprocessor architecture, Instruction set and Programming (8085, P-III/P-IV). Microprocessor applications

Data Base Management Systems

Database Concepts. ER diagams, Data Models, Design of Relational Database, Normalisation, SQL and QBE, Query Processing and Optimisation, Centralised and Distributed Database, Security, Concurrency and Recovery in Centralised and Distributed Database Systems, Object Oriented Database Management Systems (Concepts, Composite objects. Integration with RDBMS applications), ORACLE

Computer Graphics

Display systems, Input devices, 2D Geometry, Graphic operations, 3D Graphics, Animation, Graphic standard, Applications
Concepts, Storage Devices, Input Tools, Authoring Tools, Application. Files

Programming Concepts

Programming language , concepts, Paradigm and models. Data, Data types, Operators, Expressions, Assignments , Flow of control-Control Structure, I/O Statement, User Defined and Built in Function parameter passing
Principles , classes, inheritance, Class hierarchies, polymorphism, Dynamic binding, reference semantics and their implementation
Principles, functions, lists, types and polymorphism, higher order functions lazy evaluation equations and pattern matching
Principles , horn clauses and their execution, logical variables relations, data structure, Controlling the search order, programme development in prolog implementation of prolog, example programme in prolog
Principle of parallelism co routines, Communication and execution, Parallel virtual Machine (PVM) and message passing interface (MPI), routine an calls , Parallel programmes in PVM paradigm a swell as MPI, paradigm for simple problems like matrix multiplication
Preconditions , post conditions, axiomatic approaches for semantic, corrections denotation semantics
Complier structure, Compiler construction tools, coalition phases.

Finite Automata, Pushdown Automata, Non-Determinations, and NFA, DPDA and PDAs and language accepted by these structure, Grammars, language-Types of grammar-type,0, type 1, tope 2, type 3, The relationship between types of grammars, and finite machine, Pushdown automata and context free Framers, Lexical Analysis-regular express and regular languages.LEX pacemaker on UNIX, Conversion of NFA to DFA minimizing the number of states in a DFA, Compilation an interpretation Bootstrap Compilers.

Context free grammars, Parsing and parse trees, representation of parse trees as rightmost ma leftmost derivation. Bottom up parsers-shift reduce, operator precedence an LR, YACC package on UNIX, system, Top down parsers-Left recursion and its removal , recursive descent Parsers, Predictive parser Intermediate codes-Quadruples, triples, Intermediate code generation, Code generation , Code optimization

Data Communication and Networks

Data Communication

Analog and Digital transmission, Asynchronous and Synchronous transmission, Transmission media, Multiplexing and Concentration, Switching techniques, Polling

Networks

Topologies, Networking Devices, OSI Reference Model, Protocols for (i) Data link layer, (ii) Network layer, and (iii) Transport layer, TCP/IP protocols, Networks security; Network administration

Data Structures and Algoritms

Data Structures

Definition, Simple and Composite structures , Arrays, Lists, Stacks, queues, Priority queues, Binary trees, B-trees, Graphs

Sorting and Searching Algorithms

Sorting and Searching Algorithms, Analysis of Algorithms, Interpolation and Binary Search, Asymptotic notations-big ohm, omega and theta. Average case analysis of simple programs like finding of a maximum of n elements. Recursion and its systematic removal. Quicksort- Non-recursive implementation with minimal stack storage

Design of Algorithms

Design of Algorithms (Divide and Conquer, Greedy method, Dynamic programming, Back tracking, Branch and Bound). Lower bound theory.

Non-deterministic algorithm

Non-deterministic programming constructs. Simple non-deterministic programs. NP-hard and NP-complete problems

OOP and Web Technologies

Object Oriented Programming

Object, messages, classes, encapsulation, inheritance, polymorphism, aggregation, abstract classes, generalization as extension and restriction. Object oriented design. Multiple inheritance, metadata

Web Technologies

HTML, DHTML, XML, Scripting, Java, Servlets, Applets

Advanced Software Engineering

Software development models, Requirement analysis and specifications, Software design, techniques and tools, Software validation and quality assurance techniques, Software maintenance and advanced concepts, Software management

Operating Systems

Introduction, Memory management, Support for concurrent process, Scheduling, System deadlock, Multiprogramming system. 1/0 management, Distributed operating systems, Study of Unix and Windows NT

Artificial Intelligence

Definitions. AI approach for solving problems

Automated Reasoning with propositional logic and predicate logic- fundamental proof procedure, refutation. resolution, refinements to resolution (ordering/pruning/restriction strategies)

State space representation of problems, bounding functions, breadth first, depth first, A, A*, AO*, etc. Performance comparison of various search techniques

Frames, scripts, semantic nets, production systems, procedural representations. Prolog programming

Components of an expert system, Knowledge representation and Acquisition techniques, Butlding expert system and Shell

RTNS. ATNS, Parsing of Ambiguous CFG's. Tree Adjoining Grammars (TAGs). Systems approach to planning, Designing; Development, Implementation and evaluation of MIS

Decision-making processes, evaluation of DSS, Group decision support system and case studies; Adaptive design approach to DSS development, Cognitive style in DSS, Integrating expert and Decision support systems

Finite Automata and Formal Languages

Theory of Computation

Formal language, Need for formal computational models, Non-computational problems, diagonal argument and Russel's paradox.

Deterministic Finite Automaton

Deterministic Finite Automaton (DFA), Non-deterministic Finite. Automaton (NFA). Regular languages and regular sets. Equivalence of DFA and NFA. Minimizing the number of states of a DFA. Non-regular languages. and Pumping lemma.

Pushdown Automaton

Pushdown Automaton (PDA), Deterministic Pushdown Automaton (DPDA), Non-equilvalence of PDA and DPDA.

Context free Grammars

Greibach Normal Form (GNF) and Chomsky Normal Form (CNF), Ambiguity, Parse Tree Representation of Derivations. Equivalence of PDA's and CFG's. Parsing techniques for parsing of general CFG's Early's, Cook-Kassami-Younger (CKY), and Tomita's parsing.

Linear Bounded Automata (LBA)

Power of LBA. Closure properties.

Turing Machine (TM)

One tape, multitape. The notions of time and space complexity in terms of TM. Construction of TM for simple problems. Computational complexity.

Chomsky Hierarchy of Languages

Recursive and recursively-enumerable languages.

Information Theory and Coding

Model for C Information Channel

Discrete Memoryless Channel, Binary Symmetric Channel (BSC), Burst Channel, Bit-error rates. Probability, Entropy and Shanno's measure of information. Mutual information. Channel capacity theorem. Rate and optimality of information transmission

Variable Length Codes

Prefix codes. Huffman Codes, Lempel-ziev (LZ) codes. Optimality of these codes. Information content of these codes

Error Correcting and Detecting Codes

Finite fields, Hamming distance, Bounds of codes, Linear (Parity Check) codes, Parity check matrix, Generator matrix, Decoding of linear codes, Hamming codes

Image Processing

Image Registration, Spatial Fourier Transforms, Discrete Spatial (2-dimensional) Fourier transforms, Restoration, Lossy Compression of images (pictures)

Data Compression Techniques

Representation and compression of text, sound, picture, and video files (based on the JPEG and MPEG standards)

Operation Research

Linear Programming Problem

Linear Programming Problem (LPP) in the standard form, LPP in Canonical form. Conversion of LPP in Standard form to LPP in Canonical form. Simplex-Prevention of cyclic computations in Simplex and Tableau, Big-M method, dual simplex and revised simplex. Complexity of simplex algorithm(s). Exponential behaviour of simplex. Ellipsoid method and Karmakar's method for solving LPPs. Solving simple LPPs through these methods. Comparison of complexity of these methods

Assignment and Transportation Problems

Simple algorithms like Hungarian method, etc

Shortest Path Problems

Dijkstra's and Moore's method. complexity

Network Flow Problem

Formulation. Max-Flow Min-Cut theorem. Ford and Fulkersons algorithm. Exponential behaviour of Ford and Fulkerson's algorithm. Malhotra-Pramodkumar-Maheshwari (MPM) Polynomial algorithm for solving Network flow problem. Bipartlte Graphs and Matchings; Solving matching problems Network flow problems

Matroids

Definition. Graphic and Cographic matroids. Matroid intersection problem

Non-linear Programming

Kuhn-Tucker conditions. Convex functions and Convex regions. Convex programming problems. Algorithms for solving convex programming problems- Rate of convergence of iterative methods for solving these problems

Neural Networks

Perceptron model, Linear separability and XOR problem. Two and three layered neural nets. Backpropagation-Convergence. Hopfield nets, Neural net learning, Applications

Fuzzy Systems

Definition of a Fuzzy set, Fuzzy relations, Fuzzy functions, Fuzzy measures, Fuzzy reasoning, App1ications of Fuzzy systems

Unix

Operating system, Structure of Unix Operating System, Unix Commands, Interfacing with Unix. Editors and Compilers for Unix, LEX and YACC, File system, System calls. Filters, Shell programming

Windows

Windows environment, Unicode, Documents and Views, Drawing in a window, Message handling, Scrolling and Splitting views, Docking toolbars and Status bars, Common dialogs and Controls, MDI, Multithreading, OLE, Active X controls, ATL, Database access, Network programming

2015-01-11T14:32:00.002+05:30

Mechanical Subjects Easy Units in 4-1 Semsters
All Subjects
Units I II III V VI VIII

2014-10-18T14:25:00.003+05:30

G K Solved for UGC NET

1. Who is the first governor general of India.
Lord William Bentinck.

2. Young Bengal movement was started by.
Henry Louis Vivian Derozio.

3. The demand for 'swaraj'(self government) was made by Indian National Congress(I.N.C.) for the first time.
At Calcutta session, 1906 under the chairmanship of Dadabhai Naoroji.

4. The communal award was announced by
Ramsay Mcdonald

5. Who was the PM of Britain when India got independence.
Atlee.

6. The time taken by sunlight to reach earth.
8 minutes and 16.6 seconds.

7. The hottest planet in our solar system is.
Venus

8. What is Astronomical Unit.
The Mean distance between earth and sun.

9. Which is the highest peak in Africa.
Mt. Kilimanjaro (Tanzania).

10. Intensity of shaking caused by earthquake is measured by
Mercalli scale.

11. Willy Willies are cyclones that affect
Northern Australia

12. Rowlatt act, 1919 enabled government
To suspend Habeas Corpus.(to arrest and imprison suspects without trail).

13. Khilafat movement was started by
Mohammed Ali and Shoukat Ali to agitate against the injustices done to Turkey by British.

14. Who were the important members of Cabinet mission plan.
Wavell, Patrick Lawrence and Stafford Cripps

15. Poverty and UnBritish rule in India is a book written by
Dadabhai Naoroji

16. What is the shape of Earth.
Oblate Spheroid.

17. Kalhari is a famous desert in.
Botswana(Africa).

18. Who is the leading producer of platinum in the world.
South Africa.

19. Which is the largest lake in India.
Chilka lake(orissa)

20. India shares longest boundary with.
Bangladesh

21. Shompens are tribes of.
Andaman and Nicobar Islands.

22. NH 7 connects
Varanasi to Kanykumari.

23. Fundamental duties adopted in our constitution was borrowed from
USSR(Soviet Union)

24. Right to free and compulsory education to children under the age group of 6-14 years was enshrined in our constitution in
Article 21-A

25. What is a Division bench.
A bench with two to three Justices.

26. Who is the highest law officer in the country.
Attorney General.

27. Lee Commission recommended setting up of
Public service commission

28. What is starred question.
A starred question is to be answered orally on the floor of the House.

29. Who is the chairman of 14th Finance Commission.
Y.V. Reddy

30. Peoples plan was formulated by
M.N. Roy

2014-10-18T14:24:00.002+05:30

TIPS ON PAPER 3 OF UGC NET COMPUTER SCIENCE

If you look the syllabus of ugc net computer science particularly for paper 3, it’s a huge ocean. So mastering over all areas is simply not an easy task. So you got to focus upon some of the conventional areas where questions are often asked.

In paper 3 you all know that there are two parts, core part and elective part. Concentrate more on core part as it contains popular subjects and also easy to learn. There are actually 14 sections.

BOOK LIST OF IMPORTANT REFEREN FOR UGC NET COMPUTER SCIENCE
1. Digital logic fundamentals Click Here to Buy

2. Database Management System Click Here to Buy

3. Computer graphics Click Here to Buy

4. OOPS Click Here to Buy

5. Compiler design basics Click Here to Buy

6. Discrete Structures Click Here to Buy

7. Data communication and networks Click Here to Buy

8. Network security Click Here to Buy

9. Data structures Click Here to Buy

10. Unix basics Click Here to Buy

11. Software engineering Click Here to Buy

12. Operating systems Click Here to Buy

13. Artificial intelligence Click Here to Buy

14. Java basics Click Here to Buy

Out of these fourteen sections, aspirants will be familiar with most of the sections. But the major fault they commit is that they don’t read books and never make notes of their own on important concepts and instead try to rely on what they have learnt during their post-graduation and appear for the exam without focused preparation and meet failure.

Always bear in mind that when it comes to exams, you got to take it seriously and put 100% efforts as much as possible from your side and eventually you will be victorious in the exam. Nothing comes easy in life. Learn regularly for atleast two months as I have already mentioned in my previous article by making action plans on what are the areas to be covered everyday.

How to tackle elective/optional subjects of ugc net compuer science:

As you all are aware of the fact that there are five electives namely:

1. Discrete Mathematics

2. Information coding and theory

3. Linear and non linear programming

4. Neural networks and fuzzy logics

5. Unix and windows Click Here to Buy

Questions on electives are mostly problem solving based one except elective 5. It is not required to master all the electives. Try to select some electives which you feel to be learnable and give more importance totheoretical aspect of electives because paper 3 is a good blend of theorotical and problem solving questions.
Elective 1, 2, 5 can be prepared with some extra effort.

Bottomline: Give more focus on core papers.

Don’t get afraid when you see big questions. Always remember the fact that big question means easy answer. All that is needed is being patient, presence of mind and thinking logically.

Let me give an example for this,

What is the output of the following

program ?

#include<stdio.h>

main( )

{

int a, b = 0;

static int c[10] =

{1, 2, 3, 4, 5, 6, 7, 8, 9, 0};

for (a=0; a<10;++a)

if ((c[a]%2)= =0) b+=c[a];

printf(“%d”,b);

}

(A) 15 (B) 25

This was actually a question asked in UGC Net computer science paper 3 exam.

When candidates see such questions, they immediately leave the question or make a guess just like that. Don’t do it.

Do you know how to solve this? Its very simple.

An array has been declared and initialized with 10 elements.

Then we have a for loop which will execute 10 times.

Then there is a if statement which has modulus operation (modulus means the remainder part of the answer will be taken in to consideration.

we have to get zero as the remainder, Then only even numbers will be taken in to consideration.

i.e., 2%2=0,

4%2=0,

6%2=0,

8%2=0

Then we have

b+=c[a];

which means b=b+c[a];

initially b is initialized as zero, therefore add 2+4+6+8=20

So the answer is 20.

Very simple.

So learn the question and the answer options well.
There are greater chances that you will mark the right answer with what you have learnt and understood.

Finally, I wish all my readers all the very best for the forthcoming UGC NET exam andI wish you all pass this exam with flying colours. Let me conclude with a quote, “Little drops of water makes a big ocean”.

Similarly, “Little amount of hard and smart work on a consistent basis helps you reach your destiny”.

2014-10-18T14:21:00.004+05:30

OPERATING SYSTEM SYNCHRONIZATION BASICS FOR UGC NET

Synchronization : The concept of Synchronization is concerned with cooperating

processes that share some resources. Co-operating processes must

synchronize with each other when they use shared resources. Thus we can view the Synchronization as a set of constraints on the ordering of events.

Semaphores : A Semaphore is a protected variable whose value can be accessed and altered only by operations P and V.

A Semaphore Mechanism basically consists of the two primitive operations

SIGNAL and WAIT.

The Semaphore variable can assume only positive integer value. The integer

value of the Semaphore in the wait and signal operations must be executed

indivisible. That is, when one process modifies the Semaphore value, no other process can simultaneously modify that same Semaphore value.

Importance of semaphores :

(i) Semaphores can be used to deal with n process critical section problem.

As the n processes shares the semaphores, mutex (standing for mutual

exclusion), is initialized to 1.

(ii) Semaphores can also be used to solve various synchronization problems.

Co-operating Processes : The concurrent processes executing in the Operating

System may be either Independent Processes or Co-operating Processes.

A process is Co-operating if it can affect or is affected by the other processes

executing in the System. That means any process that shares data with other processes is a Co-operating Process.

Inter-Process Communication : Cooperating processes can communicate in a

shared-memory environment. Cooperating processes communicate with each

other via an Inter-Process-Communication (IPC) facility. IPC provides a

mechanism to allow processes to communicate and to synchronize their actions.

Inter-Process Communication is best provided by a Message System. Message

System can be defined in many different ways. An IPC facility provides at least

the two operations - send(message) and receive(message).

2014-10-18T14:19:00.000+05:30

UGC NET GENERAL PAPER 1

1. A teacher can develop social values among students by

(a) telling them about great people

(b) developing sense of discipline

(d) telling them good stories

Ans.: c

2. The ideal teacher

(a) Teaches the whole curriculum

(b) Helps his students in learning

(d) Maintains good discipline

Ans.: c

3. The aim of education should be

(a) To develop vocational skills in the students

(b) To develop social awareness in the students

(d) To prepare the students for practical life

Ans.: d

4. If in a research variables cannot be manipulated then it is known as

(a) Experimental Research

(b) Descriptive Research

(d) Exploratory Research

Ans.: b.

5. The non-verbal communication includes

(a) tone of voice

(b) facial expression

(d) All of these

Ans.: d

6. Which of the following will not be a number of the series 1, 8, 27, 64, 125, ...... ?

(a) 216 (b) 512 (c) 729 (d) 1000

Ans.: a

Explanation:

1^3=1

2^3=8

3^3=27

4^3=64

5^3=125

6^3=216

7. If ENGLAND is written as 1234526 and FRANCE is written as 785291, how is GREECE coded ?

(a) 381171

(b) 381191

(d) 835545

Ans.: b

Explanation:

From the given statement,

G-3

R-8

E-1

C-9

E-1

8. Booting is the process that signifies which of the following ?

(a) Loading the Operating system into main memory

(b) Shutdown the computer

(d) Loads the anti-virus

Ans.: a

9. Tropospheric ozone .

(a) protects Earth from most of the harmful UV radiation

(b) binds with hemoglobin, preventing binding with oxygen in red blood cells

(d) is a primary pollutant

Ans.: c

10. One of the problems that occurs as a consequence of CFC pollution is ________

(a) increasing skin cancer in humans

(b) toxins accumulating in homes

(d) movement of toxins into lakes and rivers, which poisons fish

Ans.: a

11. When the offices of both Speaker and Deputy Speaker falls vacant –

(a) The members of Lok Sabha immediately elect a Speaker.

(b) The senior most willing member of Lok Sabha becomes the speaker.

(d) The Deputy Chairman of Rajya Sabha presides over till the next speaker is elected.

Ans.: b

12. Video conferencing is also known as :-

(a) Physical Conferencing

(b) Remote Conferencing

(d) None of these.

Ans.: c

13. ‘Moksha’ is a Vedic term which means :

(a) Complete renunciation of worldy affairs

(b) Salvation from the cycle of birth and death.

(d) Way of imparting education

Ans.: b

14. The constitution is the supreme law of the land. It is protected by —

[a] The Supreme Court

[b] The Parliament

[c] The Cabinet

[d] The Constituent Assembly

Ans.: a

15. A mutually beneficial association necessary for survival of both partners is

(a) mutualism/symbiosis

(b) commensalism

(d) both a and b.

Ans.: a

16. The power of the Supreme Court of India to decide disputes between two or more States falls under its
(A) Advisory Jurisdiction
(B) Appellate Jurisdiction
(C) Original Jurisdiction
(D) Writ Jurisdiction

Ans.: b

17. In certain code TEACHER is written as VGCEJGT. The code of CHILDREN will be
(A) EKNJFTGP

(B) EJKNFTGP

(D) None of these

Ans.: b

Explanation:

CHILDREN=Add every character by 2

C+2=E

H+2=J

I+2=K

L+2=N

D+2=F

R+2=T

E+2=G

N+2=P

18. A person has to buy both apples and mangoes. The cost of one apple is Rs 7 whereas that of a mango is Rs 5/-. If the person has Rs 38, the number of apples he can buy is
(A) 1 (B) 2
(C) 3 (D) 4

Ans.: d

Explanation:

Note the words “apples” and “mangoes” both are plural.

Therefore, from the above options, 4 apples and 2 mangoes may be bought.

7*4=28

5*2=10

19. The mean marks obtained by a class of 40 students is 65. The mean marks of half of the students is found to be 45. The mean marks of the remaining students is
(A) 85 (B) 60
(C) 70 (D) 65

Ans.: a

Explanation:

Total score of 40 students= 40*65=2600

Total score of 20 students=45*20=900

Total score of other 20 students=(2600-900)=1700

So, Mean score of remaining 20 students is 1700/20=85

20. Which is the main objective of research ?

(A) To review the literature

(B) To summarize what is already known

(D) To discover new facts or to make fresh interpretation of known facts

Ans.: d

2014-10-18T14:17:00.002+05:30

UGC NET COMPUTER SC. PAPER 2

1. What is the functionality of recursive foreign key.

A recursive foreign key references its own relation.

2. 5^th Normal form is concerned with

Join dependency

3. Which Normal form is considered adequate for normal database design.

3NF

4. Which two files is used during operation of DBMS.

Data dictionary and transaction log

5. Which addressing mode allows relocation without any change over in code.

Indexed addressing

6. Dependency preservation is not guaranteed in

BCNF (Boyce Code Normal Form)

7. Which operator is used to compare a value to a lot of literals values that have been specified.

Like operator

8. A graph in which all nodes are of equal degree.

Regular graph

9. The length of Hamiltonian path in a connected graph is

n-1

10. A graph with one vertex and no edges is

Trivial graph

11. The negation of the statement “4 is even or -5 is negative” is

4 is odd and -5 is note negative.

12. An euler graph is one in which

All vertices are of even degree.

13. Advantage of synchronous sequential cirtcuits is

Faster operation

14. EPROM contents can be erased by exposing it to

UV rays

15. Data can be changed from special code to temporal code by using

Shift registers

16. For pure ALOHA, maximum channel utilization is

18%

17. What is bit stuffing.

Bit stuffing referes to inserting a ‘0’ in usr stream to differentiate it with a flag.

18. Wireless interconnection to PSTN are also called as

IXCs

19. Predictive modeling in data mining uses

Statistical technique

20. The scope of GIS encompasses two types of data called as

Spatial data and non spatial data

21. What are virtual data warehouse.

Virtual data warehouse provide views of operational databses that are materialized for efficient access.

22. The Microsoft system to verify Activex controls is

Authentic code

23.What is an expert system.

An expert system is an interactive computer based decision tool that uses facts and heuristics to solve difficult decision making problems based on knowledge acquired from an expert.

24. What is a neural network

It is an artificial representation of human brain that tries to simulate its learning process.

25. What is fuzzy logic.

It is a method of mimicking the ability of human reasoning usng some rules to produce an output using interpolation process.

2014-10-18T14:15:00.007+05:30

UGC NET COMPUTER SCIENCE

1. A 2MB PCM(pulse code modulation) has

31 voice channels & 1 signalling channel.

2. What is Buffering.

Buffering is the process of temporarily storing the data to allow for small variation in device speeds.

3. What is a terminal emulation.

A software that allows a personal computer to pretend as a computer terminal is called as terminal emulation.

4. What is the use of program counter.

A program counter is used to store address of next instruction to be executed.

5. What is the application of FTP.

File Transfer Protocol(FTP) is used to transfer files with user authentication.

6. Piggy backing is a technique used for

Acknowledgement.

7. The 2’s complement of 10 is

Reason:

Transform 10 using NOT gate which means 01

Add by 1

+ 1

-----

8. Producer consumer problem is an example of

Semaphores

9. What is Agglomeration

Agglomeration is the process of grouping tasks in to larger tasks to improve performance.

10. Cycle stealing is a term related to

DMA(Direct Memory Access).

11. The logic family with least fanout is

RTL

12. IP is presented in which layer of OSI.

Network layer.

13. Context Free Languages are closed under

Union, Kleen, Closure.

14. What is a self join.

A table joined within itself.

15. What is meant by data mining.

Data Mining is the process of extracting previously non known valid and actionable information from large data to make crucial business and strategic decisions.

16. Which error detection method uses one's complement arithmetic.

Checksum

17. The maximum channel utilization in PURE ALOHA is

18%

18. The maximum channel utilization SLOTTED ALOHA is

36%

19. A mesh topology is characterized by

Highest reliability.

20. The flow of electrons in CRT is controlled by

Control grid

21. The recursively enumerable languages are closed under

Union and intersection

22. What is mono alphabetic substitution.

A character in the plaintext is always changed to the same character in the ciphertext, regardless of its position in the text.

23. Bresenhan’s line drawing algorithm is most sought because it uses only

Integer Arithmetic.

24. What is meant by critical fusion frequency.

The refresh rate above which a picture stops flickering and fuses into a steady image is called as critical fusion frequency.

25. A network schema allows

Many-Many relationship.

2014-10-18T14:13:00.005+05:30

TEACHING & RESEARCH APTITUDE UGC NET GENERAL PAPER - 1

1. Effective teaching is the result of
Clear and factual communication.

2. Man has attained success in various fields of life including education due to
Man's learning capacity.

3. State the reason for becoming a teacher.
It is a reputable job.

4. The best method to teach in class is by
Using audio-visual aids.

5. How to control students in the classroom.
By identifying the cause for restlessness.

6. Who is a teacher.
A teacher is a friend, philosopher, guide to students.

7. One will be an effective communicator if
One is clear about what one communicates.
Use of audio visual aids.
8. The best way to understand the students aptitude is by
Speaking with them freely and identify the aptitude.

9. A teacher in a classroom should be like
A leader.

10. A good research involves
A penetrating and analytical mind.

11. A competent teacher is one who
Creates interest in the subject amongst students.

12. Quality of research depends on
Proper guidance.

13. Moral teachings of teacher would give
Moral values to students.

14. Teachers need to study educational psychology because
It helps the teacher to handle the students in a more progressive way.

15. According to Plato, the main goal of education is to
Develop the power of thought.

16. Aim of modern education should aim for
Harmonious development of personality of the student.

17. The main advantage of educational values are
To develop healthy and balanced personality.
Generate capacity to earn livelihood
Develop vocational efficiency.

18. Operation BlackBoard is related to
Primary education.

19. Evaluation is useful to assess
Knowledge and skill.
Attitudes and study habits.
Interest and appreciations.

20. The degree of brightness possessed by an individual is termed as
Intelligent Quotient.

UGC NET COMPUTER SCIENCE MOBILE COMUPTING

1. Mobile IP uses how many types of address.
Two adresses namely:
* A fixed home address
* A care of address

2. What are the special features of IPV6 (Internet Protocol version 6)
# Stateless Address Auto Configuration
# Neighbour discoverys
# Nodes implement strong authentication and encryption techniques to ensure internet security.

3. Expand the following terms.
GSM - Global System for Mobile Communication
CDMA - Code Division Multiplex Access
PDA - Personal Digital Assistant
GPRS - General Packet Radio Service
ATM - Asynchronous Transfer Mode

TDMA - Time Division Multiplex Access
FDMA - Frequency Division Multiplex Access
MS - Mobile Station
BSS Base Station Subsystem
IMEI - International Mobile Equipment Identity
LOS - Line of Sight
MH - Mobile Host
OSI - Open System Interconnection
WWAN - Wireless Wide Area Network

4. The ATM layer in ATM technology deals with
Cell Transport

5. What is WMAN
WMAN stands for Wireless Metropolitan Area Network.
It is a type of wireless network that connects several wireless LANS.

Example: Wi-Max.

6. What is Wi-Max.
Wi-Max is a type of WMAN which is described by IEEE 802.16 standard.

7. What is piconet.
Piconet is a collection of bluetooth devices which are synchronized to the same hopping sequence.
It has four major components namely:
Master(M)- A bluetooth device can be the master of other bluetooth devices.
Slave(S) - The slaves are those bluetooth devices which are dependent on the master bluetooth device.
Parked(P) - They are not active presently but can be reactivated within some time.
Standby(SB) - They do not participate in piconet.

8. What are the ways in which Electronic payments are made.
Digital token
Credit card
Smart card

9. Expand E-commerce ERP, EFT and EDI
E-commerce- Electronic commerce
EDI- Electronic Data Interchange
ERP- Enterprise Resource Planning
EFT- Electronic Fund Transfer

10. The threats to electronic payment systems involves
Trojan horse
Computer virus
Computer worm

11. Activex controls can be developed using
Visual Basic, Java, Visual C++

12. When a bad frame is received, what does the frame relay does
It discards the frame.

13. ALOHA is used for
Channel allocation problem

14. What are the applications of Slotted ALOHA.
Slotted Aloha divides time in to discrete intervals
It requires global time synchronization.

15. CGI stands for
Common Gateway Interface.

16. OLE growth curve involves
Activex, DirectX, OLE controls

17. A key verifier machine is used to
Control transaction entry.

18. System integrity involves
Accuracy, security, appropriateness

19. What is a session
A session is the period of time that a unique user interacts with a web application.

20. List out the functions of GIS
Designing
Planning
Spatial imaging
Decision modeling

UGC NET COMPUTER SCIENCE:DISCRETE STRUCTURES,NETWORKS,DIGITAL LOGICS

1. What is a set.
A set can be defined as an unordered collection of distinct objects.

Example: A={3,6,2,8,7} can be called as a "set"

2. What is the difference between a partial order relation and equivalence relation.
A relation that is Reflexive, Antisymmetric, Transitive is said to be a Partial order  relation.
A relation which is Reflexive, Symmetric and Transitive is called as an Equivalence relation.
Shortcut: RAT=Partial order
   RST=Equivalence

3. What is meant by negation.
Negation means the opposite of the given preposition.
Example:
The negation of the preposition 'A' is ~A.
The negation of True is False
The negation of False is True

4. What is the difference between Tautology,Contradiction,satisfactory.
Tautology: Tautology means all the resulting outputs are always True.
Contradiction: Contradiction happens when all the results are always False
Satisfactory: Satisfactory means outputs may be True or False

5. What is an Eulerian graph.
An Eulerian graph is one which should be connected and each of its vertices should be of even degree.

6. State the formulas for complete graph and connected graph.
Complete graph=n(n-1)/2
Connected graph=n-1

7. Mention the basic laws of boolean algebra.
1. Commutative law.
2. Associative law.
3. Distributive law.
Let A=1, B=2, C=3

1. Commutative law:
A+B=B+A
Example: 1+2=2+1
A*B=B*A
Example: 1*2=2*1

2. Associative law:
A+(B+C)=(A+B)+C
Example: 1+(2+3)=(1+2)+3
A*(B*C)=(A*B)*C
Example: 1*(2*3)=(1*2)*3

3. Distributive law:

A*(B+C)=(A*B)+(A*C)
Example: 1*(2+3)=(1*2)+(1*3)

8. Name the two de-morgan's theorems.
___ _ _
A+B=A.B
___ _ _
A.B=A+B

9. What is the difference between a latch and a flipflop
A latch has no clock signal and it is asynchronous.
A flipflop has a clock signal and it is synchronous (it has time frame).
Note: Latches and flipflops are basic building blocks of sequential circuits.

10. What is a register and what is the use of shift register.
A register consists of a set of flipflops used to store binary information.
A register which is able to shift the binary information either to the left or right is alled as shift register.

11. What is the application of Watson-Felix model in software engineering.
It is used to determine the effort, staff size and total cost based on LOC (Lines of Code) needed to develop a software.

12. State the port numbers used in HTTP, FTP, SMTP, POP3, TELNET.
HTTP: 80
FTP: 20 and 21
SMTP: 25
POP3: 110
TELNET: 23

Note: Both SMTP & POP3 are used in email technology but there is a difference between the two.
SMTP is used to send a mail.
POP3 is used to receive the mail.

13. Give two examples of WAN.
Asynchronous Transfer Mode(ATM)
Integrated Services Digital Network(ISDN)

Tip: WAN is based on packet switching technology.

14. How many layers are used in OSI and TCP/IP model.
7 layers in OSI and 4 layers in TCP/IP model.
OSI- Open System Interconnection (7 layers)
Physical layer - Defines physical characterstics of network(ex. electronic circuits)
Data link layer - Data encapsulation (ex. packets)
Network layer - Packet transmission
Transport layer - Delivery of packets from source to destination
Session layer - Manges network access
Presentation layer - Determines format of data (ex. data compress, decompress, encryption,etc.)
Application layer - Consists of the applications used by end user(ex. java, word, notepad,etc)

Shortcut: PDNTSPA

TCP/IP MODEL (4 Layers)
Network layer - Mapping between IP addresses and network physical address
Internet layer - Makes datagrams and handles data routingm Makes use of IP.
Transport layer - Makes use of TCP and UDP,ensures data delivery services.
Application layer - HTTP,FTP, SMTP, etc are used here.

Shortcut: NITA

15. Explain the truth tables of basic gates.
      AND GATE

A	B	A.B
0	0	0
0	1	0
1	0	0
1	1	1

OR GATE

A	B	A+B
0	0	0
0	1	1
1	0	1
1	1	1

NOT GATE

A	_ A
0	1
1	0

NAND GATE

A	B	___ A.B
0	0	1
0	1	1
1	0	1
1	1	0

NOR GATE

A	B	___ A+B
0	0	1
0	1	0
1	0	0
1	1	0

COMMENTS ARE MOST WELCOME.

2014-10-18T14:09:00.006+05:30

NET Computer Science : Software Engg and Software Testing

1. What is formal information system.
Ans.: The flow of information from top level to bottom level.
Example: Memos, Instructions.

2. What are the different types of software system development life cycles.
Ans.: 1. Waterfall model or waterfall model
2. Prototype model
3. Object-oriented model
4. Dynamic systems development model

3. Which type of system development life cycle is based on iterative structure of system development.
Ans.: Prototype model

4. Which model is also called as Barry Boehm model.
Ans: Spiral model, which incorporates both top-down and bottom-up approaches.
It also has risk management criteria.
Tip: Cocomo model was also developed by Barry Boehm.

5. Expansion of Cocomo is
Ans.: Constructive Cost Model

6. What is the use of a Data Flow Diagram in Software engineering.
Ans.: Data flow diagram is used to describe the logical operation of a system.
Hint: It describes what a system does

7. What are the two types of Data Flow Diagrams.
Ans.: 1. Physical DFDs- Used during analysis phase
2. Logical DFDs- Used during design phase for depicting data flow.

8. What is a traceability matrix.
Ans.: It is a table that correlates requirements and design phase documents to test documents.

9. What is white box testing in software engineering.
Ans.: Testing the internal components of a software product.
Example: Loops, Execution paths.

10. Equivalence class partitioning and Boundary value Analysis are examples of.
Ans.: Black Box Testing

11. What are the different types of software testing.
Ans.: 1. Unit Test
2. Integration Test
3. System Test
4. Acceptance Test

12. What is Capability Maturity Model (CMM).
Ans.: Capability Maturity Model is based on the principles of Total Quality Management(TQM) to improve software development process.

13. What are the different stages in CMM.
Ans.: 1. Initial
2. Repeatable
3. Defined
4. Managed
5. Optimized.

14. What is Formal Technical Review (FTR)
Ans.: It is a software quality assurance activity aimed to uncover errors in function, logic, implementation.

15. What is clean approach.
Ans.: It is a software development technique used to produce software with a certifiable level of reliability.

All the best.

Comments are most welcome.

2014-10-18T14:08:00.005+05:30

UGC NET COMPUTER SCIENCE

1. Shortest propagation delay is generated by
Ans.: ECL (Emitter Control Logic)

2. In Unix, kernel is used during while
Ans.:*Reading a file
*Pressed key
*Resource allocation

3. Find out the post fix of the given pre fix expression
*+pq-rs
Ans.: pq+rs-*

4. The topology used in Campus Area Network(CAN) is
Ans.: FDDI ring.

5. Wi-Fi standard is
Ans.: 802.11a

6. A Destructor takes how many arguments.
Ans.: Zero arguments.

7. Use of Digital Differential Analyzer(DDA) Algorithm in computer graphics.
Ans.: DDA is a Line drawing and scan conversion algorithm

8. What is a tree.
Ans.: A graph 'G' with n-1 edges is a tree.
A tree is generally connected, cycle free.

9. 2-D arrays are also called as
Ans.: Matrix/Table arrays.

10. What is the use of sniffer.
Ans.: Sniffer monitors data travel on a network.

11. The objects that are shared by application in Windows.
Ans.: COM (Component Object Model)

12. What is the difference between Random scan and Raster scan.
Ans.: Random scan draws a picture one line at a time.
Raster scan draws a picture on screen at a time.(Draws whole picture at a time)

13. Essential hazards generally occur in.
Ans.: Toggle circuit and Asynchronous circuit

14. Work of Session layer.
Ans.: Name Recognition, dialog control, synchronization, security.

15. Congestion controller in networking is
Ans.: Network Layer

16. Problems in computer security is mostly caused by
Ans.: Ever increasing DOS attacks.

17. TTL token pole circuit is used for
Ans.: Voltage regulation

18. What are Network support layers
Ans.: Physical layer
Data link layer
Network layer
Transport layer

19. What are User support layers.
Ans.: Session layer
Presentation layer
Session layer

20. Logical Link Control(LLC) standard is
Ans.: 1EEE 802.2

21. Type 0 grammar also called as
Ans.: Unrestricted grammar

22. Verification and validation are components of
Ans.: Software Quality Assurance.

23. Application of function point analysis
Ans.: It is used to estimate and measure size of software.

24. Activity diagrams are used to
Ans.: Express relation between systems and sub-system.

25. GSM (Global System for Mobile Communication) supports
Ans.: TDMA (Time Division Multiplex Access).

26. Extract and Load data process in data warehousing is done by
Ans.: Load Manager

27. Line code is used to.
Ans.: Convert digital data into digital signal

28. Expand FURPS
Ans.: F-Functionality
U-Usability
R-Reliability
P-Performance
S-Support ability

29. Asynchronous Transfer MODE (ATM) has how many bytes.
Ans.: 53 bytes
Note: Header of ATM is 5 bytes.
Also called as cell relay.

30. Serial to parallel processing is done by
Ans.: De-multiplexer.

SOLVED EXPECTED MCQS FOR COMPUTER SCIENCE

1. What is the difference between specialization and generalization.

Specialization is a top-down process.

Generalization is a bottom-up process.

2. Who is an identifying owner.

The entity type on which weak entity type depends is called as an identifying owner.

3. What are the rules of a completeness constraint.

Super type, sub type.

4. An embedded printer provides

An inserted index.

5. Analysis of large database to retrieve information is called as

OLAP (Online Analytical Processing)

6.. The end of a sql command is denoted by

Semicolon(;)

7. A function that has no partial functional dependencies is in which normal form.

3NF

8. Highest noise margin is offered by

TTL (Transistor-transistor logic)

9. Parallel to serial processing is done by

Multiplexer

10. ANSI X.12 belongs to which standard.

EDI

11. Link analysis operation in data mining makes use of

Association discovery technique

12. Bluetooth uses which transmission media.

Radio links.

13. What is meant by downflow in data warehouse

It is the process of archiving and backup of data in warehouse.

14. Which synchronizes critical resources to prevent deadlock.

Semaphores.

15. The memory allocation schema subjected to external fragmentation is

Segmentation.

16. Top down parsers are called as predictive parsers because

The next lower level of the parse tree is predicted.

17. Which level is called as "Managed" in capability maturity model

Level 2

Note:

Level 1: Initial

Level 2: Managed

Level 3: Defined

Level 4: Quantitatively managed

Level 5: Optimizing

18. What is an external error.

An error whose cause cannot be identified anywhere within the software system.

19. The term "Black" in Black box testing denotes that

The design is hidden.

20. CASE tool and RAD tools are used during

System analysis stage of System Development Life cycle.

2014-10-18T14:06:00.003+05:30

COMPUTER NETWORKING

1. What are the types of transmission technology and transmission media?
Ans.: Transmission technologies- Broadcast and Point to Point
Transmission media- Guided(Wired) and Unguided (Un-wired) media.

2. What are the ways in which data can be exchanged?
Ans.: Simplex-Data can flow in one direction only.
Half-Duplex- Data can flow in both direction but in one direction at a time.
Full Duplex- Data can flow in both direction at the same time.

3. What is the difference between base-band signal and broadband signal?
Ans.: Base-band signal-The entire bandwidth of the cable is consumed by a single signal.
Broadband signal-The bandwidth is utilised by multiple frequencies, allowing multiple signals to be sent at the simultaneously.

4. Topologies of network.
Ans.: Bus Topology: Each computer is directly connected to a network cable on a single line.
Star topology: All computers connected to a central hub.
Ring topology: All computers are connected in a loop.

5. What is mesh network
Ans.: A network in which there are multiple network links between computers to provide multiple ways for data to travel is called as a mesh network.

6. What is the difference between a a router and gateway
Ans.: Gateway: A gateway generally operates at the top levels of OSI architecture.
It is used to translate information between two completely different network architectures.

Routers: Routers have access only up to network layer and particularly used to connect different Local Area Networks(LANS').

7. What is a b router?
Ans.: Br-outer= BRIDGES+ ROUTERS.

8. In networking, what is meant by RAID method?
Ans.: RAID= It is a method that is used to provide fault tolerance using multiple hard disk drives.

9. Application of Logical Link Control layer (LLC)
Ans.: It is a sub layer of Data link layer of OSI model of IEEE 802 standard.
The LLC is used to maintain link between computers while sending data through physical network.

10. What is multi-casting?
Ans.: Sending a message to a group is called as multi-casting.

11. What is meant by kerberos?
Ans.: It is an authentication service technology developed by Masachussets Institute of Technology(MIT) that uses enryption techniques to prevent intruders from finding passwords and gain unauthorized access to files.

12. When does a anonymous FTP is used?
Ans.: An Anonymous FTP is used to connect a host without using a valid login and password.

13. What is beaconing?
Ans.: Beaconing is a technique used by token-ring/FDDI network to self repair itself.

14. What is baud rate?
Ans.: Baud Rate means number of signals transferred per second

Baud rate= bit rate/N

15. What is the use of Bridges and routers.
Ans.: Bridges: They work on Physical and Data link layers of LANS of same type.
Routers: They help to relay packets among interconnected multiple network(LANS of different type).

2014-10-18T14:04:00.004+05:30

UGC NET COMPUTER SCIENCE: JUNE 2013 PAPER 3

1. Match the following:
a. Watson- Felix model intensity                        i. Failure
b. Quick-Fix model                                          ii. Cost estimation
c. Putnam resource allocation model                iii. Project planning
d. Logarithmetic- Poisson Model                     iv. Maintenance
Codes:
       a b c d
(A) ii i iv iii
(B) i ii iv iii
(C) ii i iii iv (D) ii iv iii i

Ans. D.)

Frequently aked software engineering question.

2. Equivalence partitioning is a ______ method that divides the input domain of a program into classes of data from which test cases can be derived.
(A) White-box testing (B) Black-box testing
(C) Orthogonal amIy testing
(D) Stress testing

Ans.: B.)

Very simple question from software testing.

3. ________is a process model that removes defects before they can precipitate serious hazards.

(A) Incremental model
(B) Spiral model (C) Clean room software engineering
(D) Agile model
Ans.:C)

4. Software safety is a __________ activity that focuses on the identification and assessment of potential hazards that may affect software negatively and cause an entire system to fail.

(A) Risk mitigation, monitoring and management
(B) Software quality assurance
(C) Software cost estimation
(D) Defect removal efficiency

Ans.: A.)

5. The baud rate of a signal is 600 baud/second. If each signal unit carries 6 bits, then the bit rate of a signal is __________

(A) 3600
(B) 100
(C) 6/600
(D) None of the above

Ans.: A.)

Tip: baudrate * bit =bit rate

Explanation:

Bit rate=600*6=3600

6. Match the following:
a. Data link layer                              i. Flow control
b. Network layer                             ii. Node to node delivery
c. Transport layer                            iii. Mail services
d. Application layer                         iv Routing
Codes:
       a b c d
(A) ii i iv iii (B) ii iv i iii
(C) ii i iii iv
(D) ii iv iii i
Ans.: B.)

7. The ______ measures the relative strengths of two signals or a signal at two different points.
(A) frequency
(B) attenuation
(C) throughput (D) decibel

Ans.: D.)

8. . An actor in an animation is a small program invoked _______ per frame to detennine the characteristics of some object in the animation.

(A) once

(B) twice

(C) 30 times

(D) 60 times

Ans.: A.)

9. . The statements s1 and s2 are given as :
s1 : Context sensitive languages are closed under intersection. concatenation, substitution and inverse homomorphism.
s2 Context free languages are closed under complementation. substitution and homomorphism.
Which of the following is correct statement?
(A) Both s1 and s2 are correct.
(B) s1 is correct and s2 is not correct.
(C) s1 is not correct and s2 is correct.
(D) Both s1 and s2 are not correct.
Ans.: D.)

10. Which one of the following is not an addressing mode?
(A) Register indirect
(B) Autoincrement
(C) Relative indexed
(D) Immediate operandAns.: D.)

11. Which is not a typical program control instruction?
(A) BR

(B) JMP

(C) SHL

(D) TST

Ans.: C.)

Tip: SHL means Shift Left which is a logical instruction.

12. Match the following:

a. Foreign keys                                  i. Domain constraint
b. Private key                                    ii. Referential integrity
c. Event control action model             iii. Encryption
d. Data security                                 iv. Trigger

codes:

a b c d

(A) iii ii i iv

(B) ii i iv iii

(C) iii iv i ii

(D) i ii iii iv

Ans.: B.)

13. Match the following:

a. calloc()                      i. Frees previously allocated space
b. free()                        ii. Modifies previously allocated space
c. malloc()                   iii. Allocates space for array
d. realloc()                   iv. Allocates requested size of space

codes:

a b c d

(A) iii i iv ii

(B) iii ii i iv

(C) iii iv i ii

(D) iv ii iii iAns.: A.)

14. Interrupt which arises from illegal or erroneous use of an instruction or data is

(A) Software interrupt
(B) Internal interrupt
(C) External interrupt
(D) All ofthe above

Ans.: B.)

15. Hom clauses are special kinds of propositions which can be described as

(A) Single atomic proposition on left side.
(B) Single or multiple atomic proposition on left side.
(C) A single atomic proposition on left side and a single atomic proposition on right side.
(D) A single atomic proposition on left side or an empty left side.

Ans.: D.)

16. The following three golden rules

(i) Place the user in control
(ii) Reduce the user's memory load
(iii) Make the interface consistent are for
(A) User satisfaction
(B) Good interface design
(C) Saving system's resources
(D) None of these

Ans.: B.)

17. Working set model is used in memory management to implement the concept of

(A) Swapping
(B) Principal of Locality
(C) Segmentation
(D) Thrashing

Ans.: B.)

18. Which of the following is a knowledge representation technique used to represent knowledge about stereotype situation?

(A) Semantic network
(B) Frames
(C) Scripts
(D) Conceptual Dependency

Ans.: D.)

2014-10-18T14:03:00.002+05:30

SUCCEED IN INTERVIEWS EASILY

I am back with an important article on how to SUCCEED IN INTERVIEWS. In today's competitive world, one should be able to communicate well which is the mantra of success. However talented a person may be, if he is not able to communicate his views to others properly then his entire career will be in vain. Almost all forms of recruitment be it private sector or public sector jobs demand effective form of communication from the prospective candidate by conducting interview.

So Now the time is right to grasp and master some of the most potential points on how to be victorious in interviews. Otherwise,

Life will be like the Tamil film dialogue.
"If you don't get what you aim for, then accept what you get" (Just a translation of the tamil dialogue).

So Here is the deal for your victory.

* Dress code is very important.(Wear light colored clothes and more importantly wear only those clothes that best fits you).

* Be on time for Interview.

Explanation: Being punctual is a virtue that helps one to feel more confident and perform well every time. If the interview is at 10.00 A.M. then the candidate is supposed to reach the interview spot @ 9.30 itself. Even if there is any filling up of application forms at the place of interview then it can be done easily and without and hurry.

* Before entering the interview room, seek permission of the interviewers.(Example: May I come in)

* Wait at the door till you get the permission.

* After getting into the room, wish the interviewers.
Important note: If the interview board has a woman interviewer then wish her first and then wish the male interviewers,which is a frequently followed technique.

* Keep standing till you are asked to sit.

* Trust Yourself.

Explanation: Be confident. Think positively. Believe that you can do it. Interviewers even test your positive frame of mind.

* Listen to the question properly.

Explanation: First and foremost Listen to the interviewers question well and wait till the question is completed. then think for a second or two and start replying.

* Be natural

Explanation: Don't try to speak in a flowery or modulated language. Speak slowly and steadily and in a neutral accent. Never ever try to speak fast. If you speak fast, First thing interviewer will not understand what you re saying and secondly you will suddenly run out of words and then you will start to think and finally you will have to remain silent and that will create a bad impression about you. Be careful.

* Have eye-eye contact.

Explanation: When you speak, look into the eyes of the interviewer so that the borad will feel that you really deserve the job.

* Don't loose your cool.

Explanation: Many times interviewers tend to test the candidates psychology. To test it, they may ask two three questions spontaneously. Sometimes they will try to ask some unexpected question. In these situations, Be patient and and tackle the situation with brave heart.

* Say 'I Don't know' in case you don't know the answer.

Explanation: it is very natural that you cannot answer all the questions in the interview. If you find any question not known to you, Say 'I don't know' rather than saying wrong information that will create a bad impression about you and that will impact on your marks.

* Say thank you after the interview is over.

Note: These tips are basic and if you follow them well, You have greater chances of succeeding in interviews with flying colours.

All the best to everyone.

Comments are most welcome.

2014-10-18T14:02:00.002+05:30

FRESHERS INTRODUCE YOURSELF IN AN INTERVIEW

Hi Friends.
This is another important article on how to succeed in interviews easily. In any interview, the most frequently asked first question is "Introduce Yourself". If you answer this question well then you are on the right track and your chances of winning in the interview will be bright because "Well Begun is Half Done".

So I thought of giving you a list of points which you need to prepare well to create a best impression about you in the minds of the interviewers.

* Begin with your name.

Example: My name is ____________ (or) I am ________________

* Your native place.

Example: My native place is _____________

* Educational qualification.

Note: Begin with where you have done your secondary education along with the percentage of marks scored(10th standard) and then mention about your higher secondary education with percentage of marks.(12th standard).
Then tell about college education(U.G.,P.G.,Research,etc.)

* Family background.
Note: Give a brief introduction about your family.

* Extra-curricular activities:

Example: If you are an active participant in any sports(ex.:cricket,football,tennis,hockey,athletics,etc) Mention about your participation and any awards and selections.

* Co-curricular activities:

Example: Tell about your participation in any essay writing and speech competition.

* Hobbies.

Example: Playing cricket,badminton, Listen to music, Read books and journals.

* Aim.

Cover all the above mentioned areas in a sequential manner.

While introducing yourself, start slowly and steadily like a tortoise. That is the key to success. If you try to rush up with words, suddenly you will run out of words and would start thinking about what to say next and as a result you should remain mum for sometime. Be cautious about it.

Finally, one small advice, "Nothing comes easy in life" "Only Practice makes a man perfect".

Tip: If you really want to impress with your introduction to the interviewers, stand in front of a mirror and practice the habit of introducing yourself and you will feel more confident and optimistic.

"SUCCESS FAVORS THE WELL PREPARED".

2014-10-18T14:00:00.003+05:30

UGC NET COMPUTER SCIENCE - DISCRETE STRUCTURES MCQS FOR DEC 2013

1. Which of the following is tautology?

a.)x v y

b.)x v (~y)

c.)x v(~x)

d.)(x=<y)^(x<=y)

Ans.: c.)

Explanation:

X	~X	X V(~X)
T	F	T
F	T	T

Tip: '~' denotes negation that is '1' means '0' and '0' means '1'

'V' means 'OR' operator.

Side note: Tautolgy means all the results should be True(T) or 1

2. Minimum number of individual shoes to be picked up from a dark room (containing 10 pair of shoes) if we have to get atleast one proper pair.

a.)3

b.)11

c.)10

d.)20

Ans.: b.)

Explanation of logic: There are 10 pair of shoes.

A single proper matching pair can be found out only when we pick the 11th shoe because till 10th shoe we cannot be very sure that we will get the right pair. But the 11th shoe that we take will definitely let us match the right pair surely. (LOGICAL REASONING QUESTION)

Note: May be asked in interviews too.

3. Circle has how many vertices?

a.) No vetices

b.) 2 vertex

c.) 5 vertex

d.) Infinite vertices

Ans.: d.)

Note: A simple but logic question.

You can mark as much vertices as possible on a circle.

Example:

4. The logic of pumping lemma is and example of

a.)Recursion

b.) Divide and conquer rule

c.) Pigeon hole principle

d.) Iteration

Ans.: c.)

5. An undirected graph possesses an eulerian circuit only if it is connected and its vertices are

a.) All of even degree

b.) All of odd degree

c.) of any degree

d.) even in number

Ans.: a.)

6. The number of edges in a complete graph with N vertices is equal to

a.) N(N-1)

b.) 2N-1

c.) N-1

d.) N(N-1)/2

Ans.: d.)

7. The number of edges in a connected graph with 'n' vertices is

a.) n-1

b.) n(n-1)/2

c.) n^2

d.) 2n-1

Ans.: a.)

8. A graph G has

4,5

a.) 4 edges

b.) 5 edges

c.) 20 edges

d.) 15 edges

Ans.: c.)

Logic: Number of edges in Graph G(m,n)=m*n

9. A self complemented,distributed lattice is

a.) Boolean algebra

b.) Modular lattice

c.) Complete lattice

d.) Self dual lattice.

Ans.: a.)

10. A graph with all nodes of equal importance is called as

a.) Complete graph

b.) Regular graph

c.) Non regular graph

d.) Multigraph

Ans.: b.)

11. A partial ordered relation is transitive, reflexive and

a.) bisymmetric

b.) antisymmetric

c.) antireflexive

d.) asymmetric

Ans.: b.)

12. If n is an integer, and n^2 is odd then 'n' is

a.) even

b.) odd

c.) even or odd

d.) prime

Ans.: b.)

Reason:

1.) Let n be 7 then,

n^2=49

2.) Let n be 9 then,

n^2=81

In both cases, the result is an odd number

Therefore, answer is odd.

Recommend my blog to your friends.

Comments are most welcome.

Feel free to ask doubts.

Wish you all the best for the forthcoming exam.

Quote: "Practice makes a man the BEST".

2014-10-18T13:59:00.003+05:30

Reasoning and Analogy MCQs for all competitive exams

1. Complete the series.

6,9,13,18,24,31,?

a.)35

b.)30

c.)45

d.)39

Ans.:d.)

Explanation:

6+3=9

9+4=13

13+5=18

18+6=24

24+7=31

31+8=39

2.)If 'WINNER' is written as 'YKPPGT' then 'VICTOR' is written as ?

a.)UVMNREF

b.)XKEVQT

c.)QDWERS

d.)SCNMJK

Ans.:b.)

Reason:

V+2=X

I+2=K

C+2=E

T+2=V

O+2=Q

R+2=T

3.) Find the missing number

2,4,3,6,4,8,5,?

a.)5

b.)7

c.)10

d.)9

Ans.:c.)

Explanation:

2*2=4

3*2=6

4*2=8

5*2=10

Note carefully:

When the first number '2' multiplied by '2' you get the second number as '4'

When the third number '3' multiplied by '2' you get the fourth number as '6'

When the fifth number '4' multiplied by '2' you get the sixth number as '8'

When the seventh number '5' multiplied by '2' you get the eigth number as '10'

3.) Car is related to petrol. In the same way lorry is related to

a.)Fuel

b.)Diesel

c.)Petrol

d.)Oil

Ans.:b.)

Car generally runs on petrol and similarly Lorry generally runs on diesel.

4.) Find the next number:

3,10,5,12,7,14,9,?

a.)12

b.)10

c.)16

d.)8

Ans.:c.)

Explanation:

3+7=10

10-5=5

5+7=12

12-5=7

7+7=14

14-5=9

9+7=16

Logic: Add 7 and subtract 5 consecutively.

5.) Zoology:Animals ::Mycology:?

a.)Skull

b.)Virus

c.)Fungi

d.)Algae

Ans.: c.)

Note: Zoology is the study of animals
Mycology is the study of fungi.

6.) Carbondioxide:Extinguish :: Oxygen:?

a.)Isolate

b.)Foam

c.)Burn

d.)Cease

Ans.: c.)

Reason: Carbondioxide is used to extinguish fire whereas oxygen is used to burn fire.

7.) Pituitary:Brain :: Thyroid:?

a.)Liver

b.)Neck

c.)Mouth

d.)Stomach

Ans.: b.)

Pituitary is a gland of brain whereas Thyroid gland belongs to neck region.

8. Cardiology:Heart :: Phycology:?

a.) Lungs

b.)Liver

c.)Algae

d.)Fungi

Ans.: c.)

9.) Find the missing number:
15,22,36,?,85.

a.)45

b.)55

c.)57

d.)60

Ans.: c.)

Explanation:

15
15+7=22
22+14=36
36+21=57
57+28=85

Note: Add with multiples of '7' consecutively.

10. Find the number:

43,54,76,109,153,?

a.)209

b.)208

c.)221

d.)190

Ans.:b.)

Explanation:
43
43+11=54
54+22=76
76+33=109
109+44=153
153+55=208

Reason:Add with multiples of 11.

11. Bee:Apiary :: Birds:?

Ans.: Aviary
Explanation: Apiary is the place where bees live
Aviary is the place where birds live.

12. 72,84,97,?,126

Ans.: 111
Explanation: 72
72+12=84
84+13=97
97+14=111
111+15=126

13. Asia:Continent :: Gobi:?

Ans.: Desert
Note: Asia is a continent whereas Gobi is a largest desert in Asia.

14. Odometer:Speed :: Sphygmomanometer:?

Ans.: Blood pressure
Note: Odometer is used to measure speed. Similarly, Sphygmomanometer us used to measure blood pressure.

15. Ghemer:Rajasthan :: Kaima:?

Ans.: Bihar.
Ghemer is the folk dance of Rajasthan.
Kaima is the folk dance of Bihar.

NO EXAM IS TOUGH AS LONG AS YOU BELEVE THAT 'YOU CAN DO IT'.

TRUST YOURSELF AND WORK SMART, VICTORY IS YOURS.

2014-10-18T13:49:00.000+05:30

UGC NET JUNE 2013 COMPUTER SCIENCE EXAM SOLVED MCQS WITH EXPLANATION

1. While estimating the cost of software, Lines of Code (LOC) and Function Points (FP) are used to measure which one of the following?

(A) Length of code

(B) Size of software

(C) Functionality of software

(D) None of the above

Ans.: B.)

A famous software engineering question. Self explanatory.

2.) A good software design must have

(A) High module coupling, High module cohesion

(B) High module coupling, Low module cohesion

(C) Low module coupling, High module cohesion

(D) Low module coupling, Low module cohesion

Ans.: C.)

Frequently asked question in the exam.Shortcut: Always remember Coupling = Low and Cohesion = High.

3.) How many times the word 'print' shall be printed by the following program segment?

for(i=1, i≤2, i++)

for(j=1, J≤2, J++)

for(k=l, k≤2, k++)

printf("print/n")

(A) 1

(B) 3

(C) 6

(D) 8

Ans.: D.)

Trick: There are 3 for loops and each for loop remains true till '2' times before the condition fails.
Therefore, 2^3=8.

Note: If you want to know the actual logic, leave a comment. I will expalain it.

4.) Which of the following is not a type of Database Management System?

(A) Hierarchical

(B) Network

(C) Relational

(D) Sequential

Ans.: D.)

Very basic question

5.) Cyclometric complexity of a flow graph G with n vertices and e edges is

(A) V(G) = e+n-2

(B) V(G) = e-n+2

(C) V(G) = e+n+2

(D) V(G) = e-n-2

Ans.: B.)

Software engineering question. Particularly used in Software testing.
The formula was designed by Mccabe.
Note: In Dec 2013 exam, UGC may ask who developed Cycometric complexity.
Be alert.

6. Which normal form is considered as adequate for usual database design ?

(A) 2NF

(B) 3NF

(C) 4NF

(D) 5NF

Ans.: B.)

Again a very simple question.
Those who are preaparing for computer science should be aware that an ideal Database design is possible through 3NF.(Don't forget this information).

7.Manager's salary details are to be hidden from Employee Table. This Technique is called as

(A) Conceptual level Datahiding

(B) Physical level Datahiding

(C) External level Datahiding

(D) Logical level Datahiding

Ans.: A.)

Explanation: Generally, when we say employee table, It includes the personal details of the employee.
But salary of an employee is something that describes the things of significance to an organization.Therefore, hiding things of utmost significance is called as Conceptual Data hiding.

8. Which of the following addresses is used to deliver a message to the correct application program running on a host?

(A) Port

(B) IP

(C) Logical

(D) Physical

Ans.: A.)

Networking question. No need to explain.

9.) In classful addressing, the IF address 190.255.254.254 belongs to

(A) Class A

(B) Class B

(C) Class C

(D) Class D

Ans.: B.)

Explanation:

Class	Address Range
Class A	0.0.0.0
Class B	128.0.0.0
Class C	192.0.0.0
Class D	224.0.0.0
Class E	240.0.0.0

Shortcut: A very frequently asked question from networking side.

Such questions need to be tackled with care.

Always, see the firt part of the address,(that is 190 in the above question so 190 lies within class B)

Trick: 0-127 -Class A
128-191-Class B
192-223- Class C
224-239-Class D
240-above- Class E

Hope that you will never make an error in such a question in future.
If you still have doubt, leave your comment in the comments box.

10. In IPv4 header, the field is needed to allow the destination host to determine which datagram a newly arrived fragments belongs to.

(A) identification

(B) fragment offset

(C) time to live

(D) header checksum

Ans.: A.)

Information: An IPV4 requires 32 bit address field
IPV6 requires 128 bit address field (Expected question in computer science exams.)

11. For a B-tree of height h and degree t, the total CPU time used to insert a node is

(A) O(h log t)

(B) O(t log h)(C) O(t²h)

(D) O(th)

Ans.: D.)

12. The time complexity to build a heap with a list of n numbers is

(A) O(log n)

(B) O(n)

(C) O(n log n)

(D) O(n²)

Ans.: B.)

Additional information:(very important for exams) Memorize them.
Binary search: O(logn)
Merge sort: O(nlogn)
Quick sort: O(nlogn)
Selecton sort: O(n)
Insertion sort: O(n*n)

13. Consider the following statements for priority queue:

S1 : It is a data structure in which the intrinsic ordering of the elements does determine the result of its basic operations.S2: The elements of a priority queue may be complex structures that are ordered on one or several fields.
Which of the following is correct?

(A) Both S1 and S2 are incorrect.

(B) S1 is correct and S2 is incorrect.

(C) SI is incorrect and S2 is correct.

(D) Both S1 and S2 are correct.

Ans.: D.)

14.) The task of correcting and pre processing data is called as

(A) Data streaming

(B) Data cleaning

(C) Data mining

(D) Data storming

Ans.: B.)

15. Repository of information gathered from multiple sources, storing under unified scheme at a single site is called as

(A) Data mining

(B) Meta data

(C) Data warehousing

(D) Database

Ans.: C.)

16. A test contains 100 true/false questions. How many different ways can a student answer the questions on the test, if the answer may be left blank also.

(A) ¹⁰⁰_P₂

(B) ¹⁰⁰_C₂

(C) 2¹⁰⁰

(D) 3¹⁰⁰

Ans.: D.)

Reason: A question can be answered True or False or Left Blank. So there are 3 possibilities.
So the answer is 3^100.

17. How many edges must be removed to produce the spanning forest of a graph with N vertices, M edges and C connected components?

(A) M+N-C

(B) M-N-C

(C) M-N+C

(D) M+N+C

Ans.: C.)

Often asked question. Mug it up.

18.In substitution, a character in the plaintext is always changed to the same character in the ciphertext, regardless of its position in the text.

(A) polyalphabetic

(B) monoalphabetic

(C) transpositional

(D) multialphabetic

Ans.: B.)

19. The mv command changes

(A) the inode

(B) the inode-number

(C) the directory entry

(D) both the directory entry and the inode

Ans.: C.)

20.The relation "divides" on a set of positive integers is _________

(A) Symmetric and transitive

(B) Anti symmetric and transitive

(C) Symmetric only

(D) Transitive only

Ans.: B.)

21. COCOMO stands for

(A) Composite Cost Model

(B) Constructive Cost Model

(C) Constructive Composite Model

(D) Comprehensive Construction Model

Ans.: B.)

Recommend the blog to your friends.Have Any doubts, contact me in the comments section. I will reply to you.All the best.

2014-10-18T13:46:00.003+05:30

DOWNLOAD UGC NET E-CERTIFICATES NOW:PROCEDURE TO DOWNLOAD

Dear friends.

Congratulations to all of you who have cleared UGC-NET exam.
Its joy time for those who cleared the exam but downloading e-certificates is a bit complex task.
So I thought of publishing an article on how to download e-certificates without any problem.
Follow these simple steps to download and open your certificate.

Procedure for downloading e-certificate:

Well everyone knows how to login to your account but the main problem lies in how to download the certificate.
Note: Even if you have forgotten your password, just click the "forgot password link" and give your e-mail id, your date of birth and security key to generate a new password with which you can login and follow the procedure given below:

1. There are usually 3 tabs in the candidates account. The 4th tab is where the download link for e-certificate is available. Click on the 'eCertificate' link

eCertificate

tab.

2. Then you will get a red coloured tab as given below. Just click on it.

Click here download e-certificate

3. As soon as you click on the red tab given as given above. Your certifcate will be downloaded.

Note:You need to have Adobe Reader to view the certificate.
The link to download Adobe Reader will be given in the UGC website itself.

4. After your certificate is downloaded, When you try to open the certificate you will be asked to type your password. this is the most crucial part.

5. Now type the first four characters of your name in CAPITAL LETTERS and your Date of Birth continuously.

Note: First make "CAPS Lock" on.

Example 1:If the Name is S RAMESH and Date of birth is 01/07/1990 then

the password will be S RA01071990

Note: The space after S is also to be considered as a character.

Do not put any special character between the date of birth.

Type continuously.

Example 2: NAME: A SATHISH and Date of birth is 20/09/1989
Password: A SA20091989

Note: 1.Space after the initial A is to be considered as a character.
2. No special characters between date of birth.

If you follow the procedure correctly, You can easily download the certificate.

Visit this link to start downloading e-certificate.

http://ugcnetonline.in/rollLogin.php

If you still have doubts, write your doubts in the comments box. I will help you.

Wishing you all great success in all your future endeavours.

Give your suggestions about this blog.

2014-10-18T13:44:00.003+05:30

General Knowledge Paper-1 material for UGC NET and all competitive exams

1. The employability of present day students is greatly enhanced by

Ans.: Development of soft skills

2. Value education stand for

Ans.: Inculcating virtues and culture to students

3. The great charter of Indian education is

Ans.: Lord Maculays minutes(1835)

4. Navodoya Vidyalayas are established for

Ans.: Rural talented students

5. One of the main essentials of environmental education is

Ans.: To live in harmony with nature

6. Earth summit (United nations conference on environment and development),1992 held in

Ans.: Rio di janerio

7. Green peace is an

Ans.: International NGO

8. Virtual memory is

Ans.: Type of RAM

9. What whistle blowing?

Ans.: Going public about abuses.

10. A man sole 10 eggs for rs.36 and thus gained 20% profit. At what price did he buy an egg

Ans.: Rs.3

Explanation:

Given selling price is 36 (for 10 eggs)

Profit=20%

Therefore, Cost price= 36*100

___________= 30 (For 10 eggs)

(100+20)

Therefore, Cost price of one egg=30/10=3

11.Find the next number in the series 4,6,9,13……..

Ans.: 18

Explanation: 4+2=6

6+3=9

9+4=13

13+5=18

12. A student was asked to add 16 to a number and subtract 10 from it. He by mistake subtracted 16 and added 10 and arrived at the answer as 32. What is the right number

Ans.: 44

Explanation: Let the number be x

Equation-1: x+16-10=x+6 (right equation)

Equation-2:x-16+10=x-6 (wrong equation)

Wrong answer: x-6=32; Therefore, x=32+6=38

Substitute x=38 in equation-1

Right answer is 38+6=44.

13. Effective writing depends on

Ans.: Clarity, readability, content

14. Team teaching has the potential to develop

Ans.: The habit of supplementing the teaching of each other

15. The conventionally followed teaching mechanism in higher education is

Ans.: Lecture method.

16. The most important quality of a teacher is
Ans.: Content mastery

17. A successful teacher is one who is
Ans.: Compassionate and disciplinarian

18. The main goal of research is
Ans.: Working in a scientific way to search the truth of a problem

19. A test on research demands priority on
Ans.: Reliability
Usability
Objectivity

20. Action research aimed at
Ans.: Solving an immediate problem.

21. Computers on internet identified by
Ans.: I.P. address

22. Dioxins are produced from
Ans.: Combustion of plastics

23. Bio gas contains
Ans.: Methane and carbon di oxide

24. Percept means
Ans.: Direct observation through senses
25. The primary responsibility of teacher's adjustment lies with
Ans.: The teacher himself

2014-10-18T13:43:00.001+05:30

Paper 3 UGC NET Computer Science MCQS 2013

1. A virtual function is generally defined in
Ans.: Derived class

2. A Nor gate generally recognizes inputs whose bits are
Ans.: 0's
Explanation: NOR Gate

A	B	___ A+B
0	0	1
0	1	0
1	0	0
1	1	0

3. The output of a logic gate is 1 when all its inputs are at logic 0 then the gate is

Ans.: a NOR or an EX-NOR

Explanation:NOR Gate

A	B	___ A+B
0	0	1
0	1	0
1	0	0
1	1	0

EX-NOR Gate:

A	B	Ex-Nor
0	0	1
0	1	0
1	0	0
1	1	1

4. An optimal scheduling algorithm in terms of minimizing average waiting time of a given set of processes is

Ans.: Shortest Job First scheduling algorithm

5. A combinational logic circuit used to send data coming from a single source to two or more separate destinations is

Ans.: De-multiplexer

Explanation: De-multiplexer has n inputs and 2^n outputs.

6. The process of converting digital data to digital signal is

Ans.: Line Coding

7. The transmission channel where bits are sent one after another without start and stop loop is

Ans.: Synchronous transmission

8. FDDI(Fiber Distributed Data Interconnect) is an example of

Ans.: Token ring

9. Which TCP/IP protocols are used to monitor IP gateways and networks

Ans.: SGMP(Simple Gateway Monitoring Protocol)

and SUMP(Secure Unicast Messaging Protocol)

10. Radix sort also called as

Ans.: Card sort

11. Objective of testing is
Ans.: To Uncover errors

12. In object oriented design of software, objects have
Ans.: Attributes,names,operations

13. Spiral model developed by
Ans.: Barry boehm

14. Which provides a mechanism to allow processes to communicate and to synchronise their actions without sharing the same address space?
Ans.: Inter process communication

15. Round Robin scheduling gives
Ans.: Each task the same chance at the processor.

16. Thrashing can be avoided if
Ans.: Pages, belonging to the working set of the programs are in main memory.

17. The field that investigates the mechanics of human inteligence is
Ans.: Cognitive science

18. The method of programming a computer to exhibit human intelligence is called as
Ans.: Modeling or simulation

19. Components of expert system
Ans.: Production rules
Rule interpreters
control rules

20. Frequency dependent code is
Ans.: Huffman code

Incase of any doubts, Please leave a comment in the comments box.