Ccna certification Practice Tests

295

 87.  B.  CDP frames are sent out all active interfaces every 60 seconds. All of the other options 

are incorrect.

 88.  C.  Cisco Discovery Protocol, or CDP, is a Cisco proprietary protocol used for gathering 

information from neighboring switches and routers. Link Layer Discovery Protocol is also 

called 802.1ab, which is an IEEE standard and performs identical functionality to CDP. 

802.1a is a defunct IEEE protocol used for LAN management.

 89.  D.  The default holddown timer for CDP entries is three times the advertisement timer 

of 60 seconds. So entries have a holddown timer value of 180 seconds. All of the other 

options are incorrect.

 90.  B.  To turn off or suppress CDP advertisements on a single interface, you would enter 

the interface and enter the command 

no cdp enable. The command cdp disable is 

incorrect. The command 

no cdp is incorrect. The command no cdp run is incorrect.

 91. D. The 

sh cdp entry * command will give output that’s identical to that of the show 

cdp neighbors detail command. The command sh cdp neighbors all is incorrect. 

The command 

sh cdp neighbors * is incorrect. The command sh cdp entries all is 

incorrect.

 92.  B.  The command 

lldp run entered in global config mode will enable LLDP on all 

interfaces. When enabled, LLDP-MED, or LLDP for Media, will read capabilities on the 

phone such as name and power level. The command in option A 

lldp run is incorrect 

as it needs to be configured in global configuration mode. The command 

lldp enable is 

incorrect, regardless of where it is configured.

 93.  C.  The command 

show lldp neighbor detail will show output similar to the output 

of 

show cdp neighbor detail, but it will only include LLDP neighbors. The 

command 

show lldp is incorrect. The command show lldp devices is incorrect. The 

command 

show cdp neighbor detail is incorrect.

 94.  A.  The default LLDP advertisement interval is 30 seconds. When turned on, it will 

advertise out all active interfaces every 30 seconds. All of the other options are incorrect.

 95.  B.  When you use the command 

no lldp transmit, it will suppress LLDP messages 

from exiting the interface it is configured on. The command 

no lldp is incorrect. The 

command 

no lldp receive is incorrect. The command no lldp enable is incorrect.

 96.  D.  The default value of the LLDP holddown timer for entries is 120 seconds. This 

holddown timer is set every time the switch hears an advertisement for a device. The 

holddown is four times the advertisement interval. All of the other options are incorrect.

 97.  C.  Switch B is connected to Switch A via Gi0/2. Switch A Gi0/1 is the adjacent interface 

connecting the two switches. The holddown timer for this entry is at 162 seconds; it was 

not last seen 162 seconds ago. The IP address of Switch A is 192.168.1.1.

 98.  D.  The command 

no cdp enable will turn off CDP advertisements on the interface that 

you configure it on. The command 

cdp disable is incorrect. The command no cdp is 

incorrect. The command 

no cdp disable is incorrect.

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