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Computer Networking

Computer Networking
How many non-overlapping channels are available with 802.11g?

3
23
12
40

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Computer Networking
Which of the following are true regarding OSPF areas?1. You must have separate loopback interfaces configured in each area.2. The numbers you can assign an area go up to 65,535.3. The backbone area is also called area 0.4. If your design is hierarchical, then you don't need multiple areas.5. All areas must connect to area 0.

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

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Computer Networking
What is the name of the network topology in which there are bi-directional links between each possible node?

Mesh
Tree
Star
None of these
Ring

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Computer Networking
Which of the following device is used with an X.25 network to provide service to asynchronous terminals

repeater
gateway
Packet assembler/disassemble
None of these
bridges

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Computer Networking
What is the main reason the OSI model was created?

So Cisco could use the model.
So different networks could communicate.
So application developers can change only one layer's protocols at a time.
To create a layered model larger than the DoD model.

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Computer Networking
A 4 KHz noiseless channel with one sample every 125 per sec, is used to transmit digital signals. Find the bit rate (bits per second) that are sent, if CCITT 2.048 Mbps encoding is used.

32 Kbps
None of these
8 Kbps
64 Kbps
500 Kbps

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