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Computer Networking

Computer Networking
What does 192 translate to in binary?

111110
11
1111
11000000
None of these

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Computer Networking
The channel in the data communication model can be

postal mail service
All of these
telephone lines
radio signals
None of these

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

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

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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.

None of these
32 Kbps
500 Kbps
64 Kbps
8 Kbps

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Computer Networking
Which of the following best illustrates the default subnet mask for a class A,B, and C Network?

255.255.255.0, 255.255.0.0, 255.0.0.0
None of these
255.255.0.0, 255.255.255.0, 255.255.255.255
0.0.0.0, 0.0.0.1, 0.0.1.1
255.0.0.0, 255.255.0.0, 255.255.255.0

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Computer Networking
A decrease in magnitude of current, voltage, a power of a signal in transmission between points, is known as

Amplitude
None of these
Aloha
Attenuation
Carrier

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