Question 21 : A system in which two channels are dedicated to transfer data.
1. TV
2. Cable
3. Modem
4. Cable modem
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Question 22 : A technique that allocates time slots dynamically.
1. TDM
2. WDM
3. Dynamic TDM
4. Statistical TDM
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Question 23 : Many time slots are wasted in __________
1. TDM
2. Synchronous TDM
3. Asynchronous TDM
4. FDM
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Question 24 : For voice, each channel contains a ___ word of digitized data.
1. 2
2. 1
3. 0
4. 4
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Question 25 : A technique that can be a solution to the problem of synchronizing data sources.
1. framing
2. data link control
3. full link control
4. pulse stuffing
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Question 26 : Controlling the frequency is referred as _________
1. frequency modulation
2. hertz modulation
3. amplitude modulation
4. phase modulation
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Question 27 : In this type of multiplexing time slots are preassigned to sources and fixed.
1. TDM
2. Synchronous TDM
3. Asynchronous TDM
4. FDM
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Question 28 : In TDM, the samples occupy adjacent time slots.
1. True
2. False
3.
4.
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Question 29 : WDM stands for?
1. Wave division multiplexing
2. Wavelength division multiplexing
3. Wavelength dependent multiplexing
4. Wave dependent multiplexing
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Question 30 : The purpose of communication system is to transfer information from _______ to the destination.
1. user
2. source
3. system
4. station
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