Computer Networking
The data communication support should include, but is not restricted to

terminal support, electronic mail and voice grams.
file and database access
file transfer and transaction processing
All of these

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Computer Networking
Bus is

one or more conductors that some as a common connection for a related group of devices
a collection of interconnected functional units that provides a data communications service among stations attached to the network
the condition when two or more stations attempt to use the same channel at the same time
None of these
a continuous frequency capable of being modulated or impressed with a second signal

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