Ccna certification Practice Tests

A. 

Switch#show route

B. 

Switch#show mac address-table

C. 

Switch#show mac table

D. 

Switch#show interface

 177.  Which mechanism does a switch employ to stop switching loops?

A.  Port channels

B.  Spanning Tree Protocol (STP)

C.  Ether channels

D. Trunks

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36

 

Chapter 1 

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  Network Fundamentals (Domain 1)

 178.  Which is a consequence of not using loop avoidance with layer 2 switching?

A.  Duplicate unicast frames

B.  Broadcast storms

C.  MAC address thrashing

D.  All of the above

 179.  Which switching method checks the CRC as the frame is received by the switch?

A.  Cut-through mode

B.  Frag-free mode

C.  Store-and-forward mode

D.  Fast switching

 180.  Which switch mode operation reads only the first 64 bytes before making a switching 

decision?

A.  Cut-through mode

B.  Fragment-free mode

C.  Store-and-forward mode

D.  Fast switching

 181.  A user is complaining of extremely long logon times. Using the following exhibit, what 

can you conclude?

Switch#sh interfaces fastEthernet 0/1

FastEthernet0/1 is up, line protocol is up (connected)

  Hardware is Lance, address is 000a.f36c.1501 (bia 000a.f36c.1501)

[output cut]

  956 packets input, 193351 bytes, 0 no buffer

  Received 956 broadcasts, 0 runts, 0 giants, 0 throttles

  0 input errors, 0 CRC, 235 frame, 0 overrun, 0 ignored, 0 abort

  0 watchdog, 0 multicast, 0 pause input

  0 input packets with dribble condition detected

  2357 packets output, 263570 bytes, 0 underruns

  0 output errors, 212 collisions, 10 interface resets

  0 babbles, 0 late collision, 0 deferred

  0 lost carrier, 0 no carrier

  0 output buffer failures, 0 output buffers swapped out

A.  The connection to the computer needs to be upgraded to 100 Mb/s.