tag:blogger.com,1999:blog-79076060022213281212024-09-13T10:48:39.894+02:00Definition The CCNA validates the ability to install, configure, operate, and troubleshoot enterprise level router and switched networks. This includes design implementation and verification of connections to remote sites in a WAN. New CCNA training includes basic mitigation of security threats, introduction to wireless networking and Voice. CCNA, CCNP, CCDA, CCENT, CCNA Security, CCNA Voice, CCNA WirelessUnknownnoreply@blogger.comBlogger14125tag:blogger.com,1999:blog-7907606002221328121.post-73112673659984196892015-02-07T22:49:00.003+01:002015-02-07T23:10:51.026+01:00

p { margin-bottom: 0.1in; line-height: 120%; } Hvad er TCP/UDP protokolBåde TCP og UDP stå for forskellige måder at sende data over et TCP /IP- netværk . Blandt de TCP /IP- protokollerne, repræsenterer disse to hovedparten af netværkstrafik på Internettet. Begge disse protokoller bruges af programmer til at kommunikere data , men med forskellige niveauer af sikkerhed , og hver med sine egne

Unknownnoreply@blogger.com0tag:blogger.com,1999:blog-7907606002221328121.post-76048985185281692732010-03-23T16:32:00.001+01:002010-03-23T16:34:51.966+01:00

You could also use IPTables which works on all Linux distros.For dropping traffic from a single host I use: Code: iptables -I INPUT -s -j DROP Just replace with the address of the host that you want to drop traffic from.

Unknownnoreply@blogger.com0tag:blogger.com,1999:blog-7907606002221328121.post-82694619427193379152010-03-21T14:58:00.001+01:002010-03-21T15:00:59.647+01:00

Service provider: Google 8.8.8.88.8.4.4 Service provider: ScrubItPublic dns server address: 67.138.54.100207.225.209.66 Service provider:dnsadvantageDnsadvantage free dns server list: 156.154.70.1156.154.71.1 Service provider:OpenDNSOpenDNS free dns server list: 208.67.222.222208.67.220.220 Service provider: vnsc-pri.sys.gtei.netPublic Name server IP address:

Unknownnoreply@blogger.com0tag:blogger.com,1999:blog-7907606002221328121.post-11803583066546894892009-07-18T11:57:00.007+02:002009-07-18T12:20:05.379+02:00

/25 -- 2 Subnets -- 126 Hosts/Subnet Network #IP RangeBroadcast .0.1-.126.127 .128.129-.254.255 /26 -- 4 Subnets -- 62 Hosts/Subnet Network #IP RangeBroadcast .0.1-.62.63 .64.65-.126.127 .128.129-.190.191 .192.193-.254.255 /27 -- 8 Subnets -- 30 Hosts/Subnet Network #IP RangeBroadcast .0.1-.30.31 .32.33-.62.63 .64.65-.94.95 .96.97-.126.127 .128.129-.158.159 .160.161-.190.191 .

Unknownnoreply@blogger.com0tag:blogger.com,1999:blog-7907606002221328121.post-60259162306188021632009-02-23T23:41:00.005+01:002011-01-04T22:52:27.028+01:00

1. What application layer protocol is commonly used to support for file transfers between a client and a server?• HTML• HTTP• FTP• Telnet 2. What are two forms of application layer software? (Choose two.)• applications • dialogs• requests• services• syntax 3. A network administrator is designing a network for a new branch office of twenty-five users. What are the advantages of using a

Unknownnoreply@blogger.com0tag:blogger.com,1999:blog-7907606002221328121.post-15070027099187652292009-02-23T23:40:00.002+01:002011-01-04T22:52:49.765+01:00

1. Based on the transport layer header shown in the diagram, which of the following statements describe the established session? (Choose two.)• This is a UDP header.• This contains a Telnet request.• This contains a TFTP data transfer.• The return packet from this remote host will have an Acknowledgement Number of 43693.• This is a TCP header. 2. With TCP/IP data encapsulation, which range of

Unknownnoreply@blogger.com0tag:blogger.com,1999:blog-7907606002221328121.post-90397261848652334832009-02-23T22:53:00.002+01:002011-01-04T22:53:08.653+01:00

1. In an IPv4 environment, what information is used by the router to forward data packets from one interface of a router to another? • destination network address• source network address• source MAC address• well known port destination address 2. What information is added during encapsulation at OSI Layer 3?• source and destination MAC• source and destination application protocol• source and

Unknownnoreply@blogger.com0tag:blogger.com,1999:blog-7907606002221328121.post-58186047709383847372009-02-22T15:57:00.004+01:002011-01-04T22:53:32.898+01:00

1. Users in the network are experiencing slow response time when doing file transfers to a remote server. What command could be issued to determine if the router has experienced any input or output errors?• show running-config• show startup-config• show interfaces• show ip route• show version• show memory2. Refer to the exhibit. A technician applies the configuration in the exhibit to a clean

Unknownnoreply@blogger.com0tag:blogger.com,1999:blog-7907606002221328121.post-23903379040960240692009-02-22T15:15:00.008+01:002011-01-04T22:54:00.703+01:00

1. Refer to the exhibit. A student working in the lab selects a cable that is wired as shown. Which connection types can successfully be made with this cable? (Choose two.)• connecting a PC to a router’s console port• connecting two routers together via their fast ethernet ports• connecting two switches together at gigabit speeds• connecting a PC to a switch at Gigabit Ethernet speeds• connecting

Unknownnoreply@blogger.com0tag:blogger.com,1999:blog-7907606002221328121.post-64962164366299126162009-02-21T22:47:00.005+01:002011-01-04T22:54:16.484+01:00

1. In the graphic, Host A has reached 50% completion in sending a 1 KB Ethernet frame to Host D when Host B wishes to transmit its own frame to Host C. What must Host B do?• Host B can transmit immediately since it is connected on its own cable segment.• Host B must wait to receive a CSMA transmission from the hub, to signal its turn.• Host B must send a request signal to Host A by transmitting

Unknownnoreply@blogger.com0tag:blogger.com,1999:blog-7907606002221328121.post-82443075443044292632009-02-20T11:29:00.008+01:002009-07-18T12:26:44.223+02:00

1 Which type of cable run is most often associated with fiber-optic cable? -backbone cable horizontal cable patch cable work area cable2 What is a primary role of the Physical layer in transmitting data on the network? -create the signals that represent the bits in each frame on to the media provide physical addressing to the devices determine the path packets take through the network control

Unknownnoreply@blogger.com0tag:blogger.com,1999:blog-7907606002221328121.post-25406393561843060132009-02-18T20:53:00.007+01:002011-01-04T22:54:51.556+01:00

1.Which three factors should be considered when implementing a Layer 2 protocol in a network? (Choose three.)the Layer 3 protocol selected>the geographic scope of the networkthe PDU defined by the transport layer>the physical layer implementation>the number of hosts to be interconnected2.Refer to the exhibit. Assuming that the network in the exhibit is converged meaning the routing tables and ARP

Unknownnoreply@blogger.com2tag:blogger.com,1999:blog-7907606002221328121.post-83116599026385047512009-02-17T22:02:00.030+01:002011-01-04T22:55:08.930+01:00

Refer to the exhibit. Which network prefix will work with the IP addressing scheme shown in the graphic./24/16/20/27/25/28Which IPv4 subnetted addresses represent valid host addresses? (Choose three.)172.16.4.127 /26172.16.4.155 /26172.16.4.193 /26172.16.4.95 /27172.16.4.159 /27172.16.4.207 /27Which statements are true regarding IP addressing? (Choose two.)NAT translates public addresses to

Unknownnoreply@blogger.com0tag:blogger.com,1999:blog-7907606002221328121.post-90115666237115315032009-02-15T20:46:00.012+01:002009-07-18T12:24:31.717+02:00

Book CCNA Exploration: Network FundamentalsCCNA sem. 1 chapter 2Network Fundamentals v.4.01. Which statements correctly identify the role of intermediary devices in the network?(Choose three.)determine pathways for data initiate data communicationsrealtime and retransmit data signalsoriginate the flow of datamanage data flowsfinal termination point for data flow2.1.6 Network Media2. Select the

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