Computer Networking
CSMA (Carrier Sense Multiple Access) is

a method of determining which device has access to the transmission medium at any time
a method access control technique for multiple-access transmission media.
None of these
a very common bit-oriented data link protocol issued by ISO.
network access standard for connecting stations to a circuit-switched network

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

a medium access control technique for multiple access transmission media
All of these
None of these
a form of TDMA in which circuit switching is used to dynamically change the channel assignments
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?

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

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