Question

True or False questions (1 point each) distance applications, including telephone and tber is typically used for long- cable television of the signal is caused by the fiber itself or impurities in the fiber such as water 2. Absorption or metals In a classful Class B Network, the default network mask used is /24 3. Data communications deals with the transmission of signals in a reliable and efficient 4. manner. Delay distortion occurs because the velocity of propagation of a signal through a guided medium varies with frequency. s. Circuit switching is very efficient in handling digital data. 6. Compression is the ability of number of devices to share a transmission facility 7. Growth in services and growth in traffic capacity go hand in hand. 8. 9. Guided media, also called wireless, provide a physical means for guiding electromagnetic waves through seawater.

Answer 1

1) True. Single mode is used for long distance as it has lesser distortion.

2) True. They absorb a part of the energy.

3) False. Its 14 not 24.

4) True. By definition.

5) True. Due to variable frequencies, all signals do not arrive at the same time.

6) False. Packet switching is used.

7) False. It is the technique to reduce the number of bits in data without loss of information.

8) True. More service is only possible due to increased capacity.

9) True. They are very useful in cases where cable laying is possible.