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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?

4
6
None of these
2
1

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Computer Networking
If digital data rate of 9600 bps is encoded using 8-level phase shift keying (PSK) method, the modulation rate is

4800 bands
1200 bands
None of these
3200 bands
9600 bands

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Computer Networking
A 2000-character text file has to be transmitted by using a 1,200 baud modem. Can you tell how long will it take?

120 seconds
12 seconds
20 seconds
None of these
2 seconds

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Computer Networking
Select the wrong data communication system component:

Receiver
Transits
Medium
Protocol

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Computer Networking
If the ASCII character H is sent and the character I is received, what type of error is this?

single-bit
recoverable
burst
multiple-bit

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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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