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Computer Networking

Computer Networking
An example of an analog communication method is

None of these
microwave
voice grade telephone line
laser beam
All of these

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Computer Networking
A receiving host has failed to receive all of the segments that it should acknowledge. What can the host do to improve the reliability of this communication session?

Send a different source port number.
Restart the virtual circuit.
Decrease the sequence number.
Decrease the window size.

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Computer Networking
Which of the following modes are valid when a switch port is used as a VLAN trunk?1. Blocking2. Dynamic auto3. Dynamic desirable4. Nonegotiate5. Access6. Learning

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

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Computer Networking
Eight stations are competing for the use of a shared channel using the 'Adaptive tree Walk Protocol'. If the stations 7 and 8 are suddenly become ready at once, how many bit slots are needed to resolve the contention?

7 slots
10 slots
14 slots
5 slots
None of these

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Computer Networking
If one link fails, only that link is affected. All other links remain active. Which topology does this?

Bus topology
Mesh topology
Physical topology
Star topology

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Computer Networking
Who invented the modem?

None of these
AT & T Information Systems, USA
Apple Computers Inc.
Wang Laboratories Ltd.
Digital Equipment Corpn.

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