Computer Networking
Which of the following refers to the terms "residual error rate"?

the probability that one or more errors will be detected when an error detection mechanism is used
The probability that one or more errors will be undetected when an error detection scheme is used
the number of bit errors per twenty four hours of continuous operation on an asynchronous line
None of these
signal to noise ratio divided by the ratio of energy per bit to noise per hertz

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

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

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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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