Ccna certification Practice Tests

269

 82.  A.  The interface has been administratively down, which means that the interface has 

been placed into a shutdown state. To resolve the problem, a 

no shutdown command 

must be configured on the interface. There is no evidence in the exhibit that the interface 

has negotiated at half-duplex. The exhibit does not show any evidence that the duplex is 

mismatched on the interface, because the interface states it is administratively disabled. 

The exhibit also shows no evidence that the cable is shorted on the interface.

 83.  C.  In order to clear the counters for a single interface, you would use the command  

clear counters interface fast 0/1. After it’s entered, you will need to confirm 

clearing of the counters. Then you can monitor the solution provided on the interface.  

The command 

reset counters interface fast 0/1 is incorrect. The command  

clear interface fast 0/1 is incorrect. The command clear statistics  

interface fast 0/1 is incorrect.

 84.  D.  The counters on this interface are all nominal, but the interface and line protocol are 

down/down. This most likely suggests that the cable is disconnected. If the interface was 

shut down, it would state in the exhibit that the interface was administratively shut down. 

There is no evidence in the exhibit that the interface is negotiated at half-duplex. The 

interface is not operating nominally because it is in a down state.

 85.  A.  It is recommended to set all servers and networking hardware statically for speed and 

duplex. If a network interface flaps (transitions between up and down), auto-negotiation of 

speed and duplex will be performed again, which could create a service outage. Changing 

the VLAN to another VLAN will not have any effect on interface resets and disconnects. 

Changing the switchport mode to a trunk is only applicable if the other side of the link 

is another switch that is configured as a trunk. Setting the switchport to auto-negotiate 

will turn on the Dynamic Trunking Protocol (DTP) and allow the switchport to become a 

trunk if plugged into another switch with DTP.

 86.  D.  The txload and rxload counters are extremely high. This depicts that the interface 

is not fast enough for the data being transferred. The speed and duplex currently are 

10 Mb/s and full-duplex. However, the interface on the switch is capable of 100 Mb/s. It is 

recommended to upgrade the node’s NIC. Although there are no major problems with the 

interface, the counters depict congestion on the interface. The exhibit shows no evidence 

that the interface is auto-negotiating speed and duplex. Although there are a large number 

of broadcasts, this is not a problem compared to the load on the interface.

 87.  A.  The commands to set the port back to auto-negotiation are 

speed auto and  

duplex auto. You can also negate the command with no speed and no duplex 

commands. Both methods will set auto-negotiation back on the port. The commands 

speed autonegotiate and duplex autonegotiate are incorrect. The command 

switchport autonegotiate is incorrect. The command interface autonegotiate is 

incorrect.

 88.  B.  Cisco switches can auto-detect speed, so the speed sensed will be 100 Mb/s. However, 

if the switch cannot detect the speed, then it will fall back to 10 Mb/s. Duplex is decided 

upon by bandwidth when IEEE auto-negotiation is turned off. If the speed is 10 Mb/s or 

100 Mb/s, then the duplex will be half-duplex; otherwise it will be full-duplex on 1000 

Mb/s links.

---