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Computer Networking

Computer Networking
If you get both local and remote echoes, every character you type will appear on the screen

once
never
twice
three times
None of these

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Computer Networking
What is the subnetwork number of a host with an IP address of 172.16.66.0/21?

172.16.36.0
172.16.48.0
172.16.64.0
172.16.0.0

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Computer Networking
How many OSI layers are covered in the X.25 standard?

None of these
seven
three
two
six

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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?

None of these
14 slots
5 slots
7 slots
10 slots

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Computer Networking
Number of bits per symbol used in Baudot code is

5
9
1
8
None of these

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Computer Networking
Which of the following data transmission media has the largest terrestrial range without the use of repeaters or other devices?

Satellite
Hardwiring
Microwave
None of these
Laser

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