Computer Networking
What is route poisoning?

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 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.

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Computer Networking
Bandlimited signal is

None of these
simultaneous transmission of data to a number of stations
transmission of signals without modulation
All of these
a signal all of whose energy is contained within a finite frequency range

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Computer Networking
What does a VLAN do?

Acts as the fastest port to all servers.
Breaks up broadcast domains in a layer 2 switch internetwork.
Provides multiple broadcast domains within a single collision domain.
Provides multiple collision domains on one switch port.

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