Computer Networking
MAC is

None of these
network access standard for connecting stations to a circuit-switched network
a method access control technique or multiple-access transmission media
a method of determining which device has access to the transmission medium at any time
a very common bit-oriented data link protocol issued to ISO.

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

signal to noise ratio divided by the ratio of energy per bit to noise per hertz
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
the probability that one or more errors will be detected when an error detection mechanism is used
None of these

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Computer Networking
Which statement describes a spanning-tree network that has converged?

All switch and bridge ports are assigned as either root or designated ports.
All switch and bridge ports are in either the forwarding or blocking state.
All switch and bridge ports are in the forwarding state.
All switch and bridge ports are either blocking or looping.

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