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Computer Networking

Computer Networking
Which of the following provide inter-switch VLAN communication? 1. ISL 2. VTP 3. 802.1Q 4. 802.3Z

2 only
2 and 4
2, 3 and 4
1 and 3

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Computer Networking
Which of the following are disadvantages 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.

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

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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
2 seconds
20 seconds
None of these
12 seconds

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Computer Networking
Computers cannot communicate with each other directly over telephone lines because they use digital pulses whereas telephone lines use analog sound frequencies. What is the name of the device which permits digital to analog conversion at the start of a long distance transmission?

Attenuation
None of these
Interface
Teleprocessor
Modem

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Computer Networking
Transmission of computerised data from one location to another is called

data management
data transfer
data flow
data communication
None of these

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Computer Networking
Which of the following medium access control technique is used for bus/tree?

MAC
token bus
token ring
None of these
CSMA

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