Computer Networking
A front-end processor is

preliminary processor of batch jobs.
None of these
a processor in a large-scale computer that executes operating system instructions
a minicomputer that relieves main-frame computers at a computer centre of communications control functions
a user computer system

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Computer Networking
Contention is

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
a collection of interconnected functional units that provides a data communications service among stations attached to the network
None of these
the condition when two or more stations attempt to use the same channel at the same time

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