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

Hamming codes
cyclic redundancy codes
bit stuffing
None of these
equalization

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Computer Networking
Which of the following characteristic(s) is/are suited to the PSS applications?

bursty traffic and low communications intensity
Multiple remote host or applications accessed by a single local access circuit terminal and circuit
All of these
widely dispersed terminals and access to international packets switched services
None of these

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