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
preliminary processor of batch jobs.
a processor in a large-scale computer that executes operating system instructions
None of these

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Computer Networking
What is route poisoning?

It describes when a router sets the metric for a downed link to infinity.
It sends back the protocol received from a router as a poison pill, which stops the regular updates.
It prevents regular update messages from reinstating a route that has just come up.
It is information received from a router that can't be sent back to the originating router.

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Computer Networking
What is the purpose of flow control?

To provide a means for the receiver to govern the amount of data sent by the sender.
To regulate the size of each segment.
To ensure that data is retransmitted if an acknowledgment is not received.
To reassemble segments in the correct order at the destination device.

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