Computer Networking
A characteristic of a multiprogramming system is:

All listed here
simultaneous execution of program instructions from two applications
concurrent processing of two or more programs
None of these
multiple CPUs

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Computer Networking
Two computers that communicate with each other use a simple parity check to detect errors for ASCII transmissions. Which of the following events will always lead to an undeleted error?

None of these
two bits or any even number of bits inverted in a block during transmission
one bit or any odd number of bits inverted in a byte during transmission
two bits or any even number of bits inverted in a byte during transmission
one bit or any odd number of bits inverted in a block of data during transmission

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