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

cyclic redundancy codes
bit stuffing
None of these
equalization
Hamming codes

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Computer Networking
You copy a configuration from a network host to a router's RAM. The configuration looks correct, yet it is not working at all. What could the problem be?

The copy did not override the shutdown command in running-config.
You copied the configuration into flash memory instead.
The IOS became corrupted after the copy command was initiated.
You copied the wrong configuration into RAM.

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Computer Networking
The network layer, in reference to the OSI model, provide

data link procedures that provide for the exchange of data via frames that can be sent and received
None of these
All of these
the interface between the X.25 network and packet mode device
the virtual circuit interface to packet-switched service

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