Computer Networking
OSI model means:

Operating source interconnection
Open systems interconnection
Operating system interconnection
Open source interconnection

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

None of these
the probability that one or more errors will be detected when an error detection mechanism is used
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

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Computer Networking
Terminals are required for

realtime, timesharing, and message switching
realtime, distributed processing, and manager inquiry
realtime, timesharing, and distributed processing
realtime, batch processing, and timesharing
None of these

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Computer Networking
Bulletin board system

converts analog signals to digital signals
is a modem capable of accepting commands
None of these
converts digital signals to analog signals
is a public access message system

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