Computer Networking
Who invented the modem?

None of these
AT & T Information Systems, USA
Wang Laboratories Ltd.
Apple Computers Inc.
Digital Equipment Corpn.

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Computer Networking
Bus is

the condition when two or more stations attempt to use the same channel at the same time
None of these
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
a continuous frequency capable of being modulated or impressed with a second signal

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