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Computer Networking

Computer Networking
Error detection at the data link level is achieved by

Bit Stuffing
Hamming Code
Equalization
Cyclic Redundancy Code

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Computer Networking
An example of digital, rather than analog, communication is

DDT
DDD
DDS
WATS
None of these

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Computer Networking
Who invented the modem?

AT & T Information Systems, USA
Digital Equipment Corpn.
Apple Computers Inc.
None of these
Wang Laboratories Ltd.

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Computer Networking
An ROP would be attached to a

full duplex channel
simplex channel
half duplex channel
None of these
duplex channel

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Computer Networking
What part of 192.168.10.51 is the Network ID, assuming a default subnet mask?

192
51
0.0.0.5
192.168.10
None of these

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Computer Networking
The core diameter of a single-mode fibers is about

10 times the wavelength of the light carried in the fiber
7 times the light carried in the fiber
3 times the wavelength of the light carried in the fiber
None of these
10 times the fiber radius

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