Computer Networking
A machine that connects to two or more electronic mail systems and transfers mail messages among them is known as

mail gateway
Gateways
None of these
User Agent
bridges

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Computer Networking
What is route poisoning?

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

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Computer Networking
Which of the following characteristic(s) is/are suited to the PSS applications?

widely dispersed terminals and access to international packets switched services
Multiple remote host or applications accessed by a single local access circuit terminal and circuit
None of these
bursty traffic and low communications intensity
All of these

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