Computer Networking
Satellite-Switched Time-Division Multiple Access (SS/TDMA) is

None of these
a medium access control technique for multiple access transmission media
a form of TDMA in which circuit switching is used to dynamically change the channel assignments
All of these
the method of determining which device has access to the transmission medium at any time.

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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
one bit or any odd number of bits inverted in a block of data 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 byte during transmission
two bits or any even number of bits inverted in a block during transmission

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