Ch17-Operating Cisco Routers

Question 1

A reference to the speed of a networking link.

Answer 1

bandwidth

Question 2

The speed at which a serial link encodes bits on the transmission medium

Answer 2

clock rate

Question 3

Command reference: Interface command that sets the speed at which the router supplies a clocking signal, applicable only when the router has a DCE cable installed. The unit is bits/sec

Answer 3

clock rate rate-in-bps

Question 4

Command reference: Interface command that sets the speed at which the router considers the interface to operate, but does not dictate or control the actual speed. The unit is kilobits/sec

Answer 4

bandwidth rate-in-kbps

Question 5

Command reference: Lists a single line of information about each interface, including the IP address, line and protocol status, and the method by which the interface was configured

Answer 5

show ip interface brief

Question 6

Command reference: Lists information about the listed interface (or all interfaces) including the IP address, mask, and line/protocol status

Answer 6

show protocols [int type/number]

Question 7

Command reference: Lists many lines of information per interfaces for the hardware controller of the interface. On serial interfaces, this command identifies the cable type as either a DCE or DTE cable

Answer 7

show controllers [int type/number]

Question 8

Considering a serial link between two routers, on which router is the clock rate command configured?

Answer 8

On the DCE side of the link

Question 9

Which command produced the following output:

Answer 9

show controllers

Question 10

Which command produced the follwing output?

Answer 10

show controllers

Question 11

Which

show

commands, when used on a router, would be useful to determine the IP address, subnet mask, and line and protocol status of a given interface or interfaces?

Answer 11

show protocols interface

show interfaces interface

Question 12

Which show command, when used on a router, would be useful to determine the IP address and line and protocol status of the device’s interfaces, as it gives a summary of all available interfaces?

Answer 12

show ip interface brief

Question 13

which command produced the following output:

Answer 13

show protocols

Question 14

which command produced the following output?

Answer 14

show ip interface brief

Question 15

Which command produced the following output

Answer 15

show interfaces serial0/0/0

Question 16

The output of a show interfaces command reveals that the interface has a line status of administratively down, and a protocol status of down. What’s the most likely reason for this?

Answer 16

The interface has been disabled with a shutdown command

Question 17

The output of a show interfaces command reveals that the interface has a line status of up, and a protocol status of down. What’s the most likely reason for this?

Answer 17

The interface has a layer 2 problem.

Question 18

The output of a show interfaces command reveals that the interface has a line status of down, and a protocol status of down. What’s the most likely reason for this?

Answer 18

The interface is not in a shutdown state. There is a physical layer problem with the interface; the cable may not be present, the switch interface on the other side of the link may be disabled, or may be powered off.