Cisco Systems 2 manual Csma/Cd

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C.router(Config)# bandwidth 56000

D.router(Config-if)# clock rate 56000

Answer: B

Explanation: The bandwidth command overrides the default bandwidth. The bandwidth has no effect on the actual speed of the line. Instead, it is used to compute routing metrics ad the load of the link. Bandwidth is expressed in Kilobits. It is specified during interface configuration.

Incorrect Answers:

A is incorrect; the clock rate command is used to set the bandwidth on DCE cable not a Frame Relay connection that must not be abbreviated plus it must be used in the interface configuration mode.

C is incorrect; to change bandwidth of an interface you must be in the interface configuration mode and the rate must be expressed kilobits per second.

D is incorrect; the clock rate command is used to set the bandwidth on DCE cable not a Frame Relay connection.

Steve McQuerry. Interconnecting Cisco Network Devices. (Cisco Press: 2000) pages 104-106.

Q. 66

What are the two primary operating modes for frame switching? (Choose two)

A.Full duplex

B.Half duplex

C.CSMA/CD

D.Cut through

E.Fragmentation

F.Store and forward

Answer: D, F

Explanation: There are 3 primary operating modes that are used for frame switching. These modes are sore- and-forward, cut-through and fragment free. When store-and-forward is used the switch must receive the whole frame before it can be forwarded. During a cut-through operation, the switch forwards the frame once it receives the Destination Address. Finally, the fragment-free mode reads the first 64 bytes before forwarding the frame.

Incorrect Answers:

A and B are incorrect; these are transmission modes of whether the transmission is done one way at at time (half Duplex) or simultaneous two-way (Full Duplex).

C is incorrect; this is a physical transmission medium, typically used in Ethernet LANs. E is incorrect; there is a fragment-free mode not a fragment mode.

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Contents Ccna Important Note Please Read Carefully Answer D Explanation Which command displays the configuration register setting?Answer D Incorrect AnswersAnswer B Explanation Answer C ExplanationExhibit Answer a Explanation Answer B Answer C During encapsulation in which order is information packaged?Answer E Explanation Answer A, B, E Answer F Explanation Answer a What is the result of segmenting a network with a bridge?Physical layer Data layer Network layer Transport layer Host 1-1 can ping Host Answer B, D, F Answer A, B and EAnswer A, B, D 640 Answer A, D, F Answer B, C, E Answer A, D Cable #1 Cable #2 Cable #3 Cable #4 Answer A, B 640 Answer D What is the likely cause of this problem? Answer A, C, D Answer Answer B, F 640 RIP Ospf Eigrp Igrp Answer Explanation Answer A, B, D, E Answer D Is incorrect this is not a valid command Answer B Answer D Answer A, C, D, E Answer E Which of the following are true?What is a benefit of a virtual LAN VLAN? Answer C, D Answer B Given the configuration example Answer D, E Explanation Answer A, E, F How does inter-VLAN communication take place? Which two statements about IP RIP are true? Choose twoAnswer D, F Answer A, B, C, and D CSMA/CD Answer A, D Which two statements about a bridge are true. Choose two Which statement about an IP network is true? Answer A, B, C, G 10.0.0.0 to 172.16.0.0 to 192.168.0.0 toExplanation Which statement is true? Incorrect Options Answer A, B, D ExplanationAnswer A, C, E Which two protocol tools use ICMP? Choose two Answer a and BAnswer A, C Which command successfully ping an individual IP address?One Two None Several Which commands should you use to enable Igrp routing? Answer E Answer A, B, C Explanation Answer A, B, C Answer B, DWhat is the bandwidth capacity of an Isdn B channel? Answer a Which statement about Ethernet networks is true? What is the distance limitation for 100BaseT? Which command sets the clock rate to 56 Kbps on serial0? Setup dialogue what do the square bracket indicate? Which command retrieves the configuration file from NVRAM? What is the most common Layer 2 device? SAP Hdlc ARP Novellether Answer a Answer D Answer A, C What are two components of an IPX address? Answer B, C Explanation Answer C, D, E, F Answer F Answer a and d Which two statements are true? Choose twoWhat is a backoff on an 802.3 network? What is a key use of a device hardware address? 16,382 65,534 Session Network Transport Maintenance 640 Answer A, C Explanation What are the characteristics of UDP? MAC LLC SAP LCP Tab Ctrl R Spacebar Right Arrow PPP Lapd Isdn Hdlc Answer B, C What does the command show access-list 101 list?Which two commands show your access lists? Choose two IP and IPX IP and PPP PPP and Sdlc PPP and Hdlc 640 What are two functions of Icmp protocol? Choose Two Answer C, D, E ExplanationAnswer D, E 172.37.2.55 to What does the term ‘Base’ refer to in 100BaseT? Click the task button & Place the encapsulation Answer Explanation IP-Space enable From where does the router boot? When you issue the command show version, your router returns101 What is the most common mail to device? 103 104 105 106 Which statement about Ethernet switches is true? 108 109 110 111 Answer A, B, F 113 Which operation is most likely to follow? You just entered the following command115 Answer A, B, C, D What is back off on an 802.3 network? 118 Answer B, E Which command displays access list 111?120 121 122 123 124 125 126 Answer E, F, G 128 Answer A, D Explanation 130 What are the generic parts of a network layer address? What is an advantage of local area network LAN segmentation?132 133 134 135 136 How does a bridge function? 138 What are two purposes for using switches? Choose two What is an example of a valid MAC address? 141 Answers C, D Which two physical interfaces does PPP support? Choose two143 144 145 146 147 148 149 What is the purpose of ISL and 802.lq frame tagging? 151 152 Which of the following describes isdn bri servie? 154 Answer B What do you use for loop avoidance? Choose two 156 Answer B Diagram 158 Answer A, B, E Identify the effect of Ctrl-Z? 160 161 162 163 Answer a How do you change the Console password to cisco? 165 166 167 Answer C 301 Answer D Q299Answer a 304 Answer D 302Answer C 303 Answer B, C 307 Answer B 310 Answer D 309 What is the purpose of DLCIs in Frame Relay?172 173 Answer C 318 175 176 177 178 179 180 Q327 Answer Unknown 328 Answer Unknown

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