Computer Networking
Error detection at a data link level is achieved by

Hamming codes
equalization
None of these
cyclic redundancy codes
bit stuffing

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Computer Networking
What is split horizon?

It holds the regular updates from broadcasting to a downed link.
It prevents regular update messages from reinstating a route that has gone down.
Information about a route should not be sent back in the direction from which the original update came.
It splits the traffic when you have a large bus (horizon) physical 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 q933a
Router(config-if)# encapsulation frame-relay ietf
Router(config-if)# encapsulation frame-relay ansi
Router(config-if)# encapsulation frame-relay cisco

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