Computer Networking
To set up a bulletin board system you need

a telephone line
a smart modem with auto-answer capabilities
All of these
a personal computer
None of these

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Computer Networking
Communication network is

the condition with two or more stations attempt to use the same channel at the same time
None of these
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
one or more conductors that serve as a common connection for a related group of devices

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