Computer Networking
Which of the following statements is correct for the use of packet switching?

by employing wide bandwidth circuits for the trunk networks substantial economies through extensive sharing of capacity could be achieved.
the subdivision of information into individually addressed packets in conjunction with alternative routing arrangement enabled the transmission path to be altered in the event of congestion or individ
the employment of additional intelligence within the network enabled more sophisticated error control and link control procedures to be applied
All of these
None of these

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Computer Networking
Which of the following are benefits of VLANs?1. They increase the size of collision domains.2. They allow logical grouping of users by function.3. They can enhance network security.4. They increase the size of broadcast domains while decreasing the number of collision domains.5. They simplify switch administration.6. They increase the number of broadcast domains while decreasing the size of the broadcast domains.

1, 3 and 5
1 and 5
2 and 4
2, 3 and 6

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Computer Networking
What is route poisoning?

It prevents regular update messages from reinstating a route that has just come up.
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.

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