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Computer Networking

Computer Networking
What is the minimum number of wires needed to send data over a serial communication link layer?

2
4
1
None of these
6

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Computer Networking
An example of an analog communication method is

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

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Computer Networking
Which of the following files is used for NetBIOS name resolution?

HOSTS
LMHOSTS
None of these
FQDN
ARP

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Computer Networking
Which of the following are advantages of using NAT?1. Translation introduces switching path delays.2. Conserves legally registered addresses.3. Causes loss of end-to-end IP traceability.4. Increases flexibility when connecting to the Internet.5. Certain applications will not function with NAT enabled.6. Reduces address overlap occurrence.

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

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Computer Networking
Which of the following conditions is used to transmit two packets over a medium at the same time?

Contention
Collision
Asynchronous
Synchronous
None of these

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Computer Networking
A 4 KHz noise less channel with one sample ever 125 per sec is used to transmit digital signals. Differential PCM with 4 bit relative signal value is used. Then how many bits per second are actually sent?

None of these
8 Kbps
64 Kbps
32 Kbps
128 Kbps.

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