Computer Networking
What is the problem with an interface if you type show interface serial 0 and receive the following message? "Serial0 is administratively down, line protocol is down."

No cable is attached.
The administrator has the interface shut down.
The keepalives are different times.
The administrator is pinging from the interface.

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Computer Networking
Contention is

a continuous frequency capable of being modulated or impressed with a second signal
None of these
One or more conductors that serve as a common connection for a related group of devices
the condition when two or more stations attempt to use the same channel at the same time
a collection of interconnected functional units that provides a data communications service among stations attached to the network

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Computer Networking
You need to configure a router for a Frame Relay connection to a non-Cisco router. Which of the following commands will prepare the WAN interface of the router for this connection?

Router(config-if)# encapsulation frame-relay ietf
Router(config-if)# encapsulation frame-relay cisco
Router(config-if)# encapsulation frame-relay q933a
Router(config-if)# encapsulation frame-relay ansi

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