Ccna certification Practice Tests

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 24.  C.  The command 

show running-config interface gi 3/45 will show the running-

configuration for only interface Gi3/45. The command 

show interface gi 3/45 is 

incorrect, as it will display the interface details for Gi3/45 and not the configuration. The 

command 

show running-config | include 3/45 is incorrect as it will only display 

lines matching 3/45. The command 

show running gi 3/45 is incorrect.

 25.  A.  The command 

show version will display the serial number of the switch or 

router. This is usually required when calling into support to open a support ticket. 

The command 

show serial is incorrect. The command show board is incorrect. The 

command 

show controller is incorrect.

 26.  D.  The command 

show running-config | begin 4/45 will show the running-config 

and begin when the text 4/45 is found. It is important to note that after the  

| begin, everything is case sensitive. The command show running-config begin 4/45 

is incorrect. The command 

show filter running-config 4/45 is incorrect. The 

command 

show running-config interface gi 4/45 is incorrect, as it will only display 

the running-config for interface Gi4/45.

 27.  B.  By default, Cisco devices do not participate in Link Layer Discovery Protocol (LLDP). 

The first command that needs to be configured is 

lldp run, which starts the switch 

participating in LLDP. You then need to enter the command 

show lldp neighbors 

detail in the privileged exec mode prompt, by exiting global configuration mode. This 

command will show all of the neighboring LLDP devices. The command 

enable lldp 

is incorrect and will not enable LLDP. Because LLDP is not enabled by default, the 

command 

show lldp neighbors detail by itself will not display anything.

 28.  A.  The interface Gig 0/1 is used for the interface of es-switch2, which connects  

cs-main.ntw via its interface of Gig 0/40. The Gig 0/1 interfaces on cs-main.ntw, es-layer2.

ntw, and es-switch3.ntw are not depicted in the exhibit because we are examining the 

Cisco Discovery Protocol (CDP) on es-switch2.

 29.  C.  The EtherChannel has been configured with no control protocol, which is a result of 

configuring each side of the EtherChannel with the command 

channel-group 1 mode 

on. The exhibit shows no evidence that the EtherChannel is configured with either Port 

Aggregation Protocol (PAgP) or Link Aggregation Control Protocol (LACP). The exhibit 

also shows no evidence that the EtherChannel is configured as an access port.

 30.  B.  Since the auto mode was used on the first switch (Switch A), desirable should be 

used on the second switch to assure forming of an EtherChannel by using the command 

channel-group 1 mode desirable. If both sides are set to auto with the command 

channel-group 1 mode auto, then the EtherChannel will not be built. The commands 

channel-group 1 mode active and channel-group 1 mode passive are used for Link 

Aggregation Control Protocol (LACP) configuration.

 31.  D.  If the other switch is set to passive mode, an EtherChannel will not form. The 

recommended mode for the other side is active mode. The exhibit also shows no evidence 

that the EtherChannel is configured as an access port. The Cisco Discovery Protocol 

(CDP) has no effect on an EtherChannel. The EtherChannel has been configured for Link 

Aggregation Control Protocol (LACP), noted by the 

channel-group 1 mode passive 

command.

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