Computer Networking
A front-end processor is

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

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Computer Networking
TCP is:

Operates at the Data Link layer
Connection orientated and unreliable
Connection orientated and reliable
Connectionless and unreliable
None of these

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