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Computer Networking

Computer Networking
Data communications system depends on four fundamental characteristics

Sender
Receiver
Medium
Timeliness

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

three times
once
never
None of these
twice

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Computer Networking
IEEE project 802 divides the data link layer into an upper _____ sublayer and a lower _____ sublayer.

MAC, LLC
PDU, HDLC
LLC, MAC
HDLC, PDU
None of these

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Computer Networking
The probability that a single bit will be in error on a typical public telephone line using 4800 bps modem is 10 to the power -3. If no error detection mechanism is used, the residual error rate for a communication line using 9-bit frames is approximately equal to

None of these
0.991
0.999
0.003
0.009

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Computer Networking
A communication network which is used by large organizations over regional, national or global area is called

None of these
LAN
WAN
Intranet
MAN

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Computer Networking
If delays are recorded as 10 bit numbers in a 50 router network, and delay vectors are exchanged twice a second, how much bandwidth per fill duplex line is occupied by the distributed routing algorithm?

500 bps
5 bps
1500 bps
None of these
1000 bps

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