Digital Communications

TDM and FDM

Question 1
Marks : +2 | -2
Pass Ratio : 100%
Which is based on orthogonality?
TDM
FDM
TDM & FDM
None of the mentioned
Explanation:
FDM technique is based on the orthogonality of sinusoids.
Question 2
Marks : +2 | -2
Pass Ratio : 100%
Which are non orthogonal multiplexing?
TDM
FDM
TDM & FDM
None of the mentioned
Explanation:
TDM and FDM are both orthogonal multiplexing.
Question 3
Marks : +2 | -2
Pass Ratio : 100%
Random access is
Distributed
Fault tolerant
Distributed & Fault tolerant
None of the mentioned
Explanation:
Random access is simple, distributed and very fault tolerant.
Question 4
Marks : +2 | -2
Pass Ratio : 100%
Minimum packet size increases as
Speed increases
Distance increases
Speed & Distance increases
None of the mentioned
Explanation:
As speed and distance goes up, minimum packet size also goes up.
Question 5
Marks : +2 | -2
Pass Ratio : 100%
Reservation systems are useful when
Delay is small
Delay is large
Delay is small or large
None of the mentioned
Explanation:
Reservation systems are useful when delays are large.
Question 6
Marks : +2 | -2
Pass Ratio : 100%
Example of reservation system is
Synchronous TDM
Non synchronous TDM
Synchronous & Non synchronous TDM
None of the mentioned
Explanation:
Synchronous TDM is an example for the reservation system.
Question 7
Marks : +2 | -2
Pass Ratio : 100%
Which isolates collision?
Bridges
Routers
Bridges & Routers
None of the mentioned
Explanation:
Bridges and routers isolates collision.
Question 8
Marks : +2 | -2
Pass Ratio : 100%
In slotted system, access is
Synchronous
Asynchronous
Synchronous & Asynchronous
None of the mentioned
Explanation:
In slotted system, access is asynchronous and requires addressing information inside.
Question 9
Marks : +2 | -2
Pass Ratio : 100%
In CSMA, collision window is _____ to cable length.
Equal
Greater
Lesser
None of the mentioned
Explanation:
The collision window is twice the cable length.
Question 10
Marks : +2 | -2
Pass Ratio : 100%
Which provides constant delay?
Synchronous TDM
Non synchronous TDM
Synchronous & Non synchronous TDM
None of the mentioned
Explanation:
Synchronous time division multiplexing provides constant bandwidth and constant delay.