16 Questions
What is the purpose of multiplexing in data communication?
To minimize or eliminate interference when several users share a medium
Which dimension of multiplexing is used for wireless communication?
Frequency, Time, and Space
What is an example of space division multiplexing given in the text?
Highways with several lanes for car drivers
What does time division multiplexing involve?
Allowing different users to use the same medium at different points in time
In wireless communication, what does frequency division multiplexing (FDM) refer to?
Using different frequencies for different users
How is code division multiplexing (CDM) carried out in wireless communication?
Using unique codes to allow multiple users to share the same frequency
In frequency division multiplexing (FDM), why are guard spaces needed?
To prevent adjacent channel interference
What is a disadvantage of using frequency division multiplexing (FDM) for mobile communication?
It results in a waste of frequency resources
What is the minimum bandwidth required to multiplex five 100-KHz channels with a 10-KHz guard band between channels?
540 KHz
What is the main difference between frequency division multiplexing (FDM) and time division multiplexing (TDM)?
TDM requires fixed assignment of a frequency to each sender
What is the purpose of guard spaces in time division multiplexing (TDM)?
To reduce cochannel interference
What distinguishes Synchronous Time division multiplexing (STDM) from Statistical Time division multiplexing (STDM)?
STDM allocates time slots on demand instead of on a fixed cycle
In Code Division Multiplexing, what does the term 'code division' refer to?
Division of channels based on unique codes assigned to each sender
Why is assigning a separate frequency for each possible communication scenario in FDM considered inefficient for mobile communication?
Because mobile communication typically takes place for only a few minutes at a time
What problem does the use of frequency division multiplexing (FDM) solve for radio stations within the same region?
Assigning separate frequencies to each radio station
What does guard space in Time division multiplexing (TDM) represent?
Time gaps separating different periods when senders use the medium.
Test your knowledge on the topic of multiplexing in data communication. This quiz covers the concepts and examples related to multiplexing, including space division multiplexing and its real-life analogies.
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