Ch17-Operating Cisco Routers Flashcards
A reference to the speed of a networking link.
bandwidth
The speed at which a serial link encodes bits on the transmission medium
clock rate
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
clock rate rate-in-bps
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
bandwidth rate-in-kbps
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
show ip interface brief
Command reference: Lists information about the listed interface (or all interfaces) including the IP address, mask, and line/protocol status
show protocols [int type/number]
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
show controllers [int type/number]
Considering a serial link between two routers, on which router is the clock rate command configured?
On the DCE side of the link
Which command produced the following output:
show controllers
Which command produced the follwing output?
show controllers
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?
show protocols interface
show interfaces interface
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?
show ip interface brief
which command produced the following output:
show protocols
which command produced the following output?
show ip interface brief
Which command produced the following output
show interfaces serial0/0/0
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?
The interface has been disabled with a shutdown command
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?
The interface has a layer 2 problem.
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?
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.
