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Free download in PDF Mobile Communication Short Questions and Answers for competitive exams. These short objective type questions with answers are very important for Board exams as well as competitive exams. These short solved questions or quizzes are provided by Gkseries.
41
Garage door opener is a
[A]
Transmitter
[B]
Receiver
[C]
Transceiver
[D]
None of the above
42
Carrier frequency of a TV remote control is in the range
[A]
of Infra red
[B]
< 100 MHz
[C]
< 1 GHz
[D]
< 2 GHz
43
Half duplex system for communication has
[A]
Communication in single direction at a time
[B]
Communication in single direction
[C]
Communication in both directions at the same time
[D]
None of the above
Answer: Communication in single direction at a time
44
The process of transferring a mobile station from one base station to another is
[A]
MSC
[B]
Roamer
[C]
Hand off
[D]
Forward channel
45
IMT-2000 is a digital mobile system that functions as
[A]
Low earth orbit satellites
[B]
Pager
[C]
Cordless
[D]
All of the above
46
NADC is a 2G standard for
[A]
TDMA
[B]
CDMA
[C]
Both a & b
[D]
None of the above
47
2G CDMA standard – cdma one supports up to
[A]
64 users
[B]
8 users
[C]
32 users
[D]
None of the above
48
The 2G GSM technology uses a carrier separation of
[A]
200 KHz
[B]
300 KHz
[C]
30 KHz
[D]
1.25 MHz
49
The minimum spectrum allocation required for W-CDMA is
[A]
5MHz
[B]
2MHz
[C]
500KHz
[D]
100KHz
50
CDMA2000 1xEV provides high speed data access with channel allocation of
[A]
1.25 MHz
[B]
5 MHz
[C]
50 MHz
[D]
4 MHz
51
Radio capacity may be increased in cellular concept by
[A]
Increasing the number of base stations & reusing the channels
[B]
Increase in radio spectrum
[C]
Both a & b
[D]
None of the above
Answer: Increasing the number of base stations & reusing the channels
52
The shape of the cellular region for maximum radio coverage is
[A]
Hexagon
[B]
Circular
[C]
Square
[D]
Oval
53
Hexagon shape is used for radio coverage for a cell because
[A]
It approximates circular radiation pattern
[B]
It uses the maximum area for coverage
[C]
Fewer number of cells are required
[D]
All of the above
54
Spectrum Efficiency of a cellular network is
[A]
The traffic carried by whole network
[B]
The traffic carried per cell divided by the bandwidth of the system and the area of a cell
[C]
Expressed in Erlang /MHz /km2
[D]
Both b and c
55
The strategies acquired for channel assignment are
[A]
Fixed
[B]
Dynamic
[C]
Regular
[D]
Both a and b
56
In a fixed channel assignment strategy
[A]
The call gets blocked if all the channels of the cell are occupied
[B]
Each cell is assigned a predetermined set of frequencies
[C]
The call is served by unused channels of the cell
[D]
All of the above
57
In a dynamic channel assignment strategy,
[A]
MSC allocates the channel according to the predetermined algorithm
[B]
Voice channels are not permanently assigned
[C]
The serving base station requests for a channel from MSC
[D]
All of the above
58
Disadvantage of using Dynamic channel assignment is
[A]
More storage required
[B]
Calculations and analysis is increased
[C]
Both a & b
[D]
None of the above
59
In Handoff
[A]
New channel allocation is done
[B]
Process of transferring the call to the new base station
[C]
Transfers the call
[D]
All of the above
60
Inter system Handoffs are done
[A]
When mobile station receives more power from other base station than the serving base station
[B]
When mobile station moves in two cellular systems with different MSC
[C]
When mobile station moves between two cellular systems
[D]
All of the above
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