Computer Networking
When UPC is used, the price of the item is located

in computer storage
on the item and on the shelf
on the shelf and in computer storage
None of these
on the item

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

the number of bit errors per twenty four hours of continuous operation on an asynchronous line
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
None of these
the probability that one or more errors will be detected when an error detection mechanism is used

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Computer Networking
Synchronous protocols

transmit characters one at a time
are more reliable
None of these
are generally used by personal computers
allow faster transmission than asynchronous protocols do

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