Introduction to Mobile Communication - Electronic Engineering (MCQ) questions & answers

1)   When a fraction of assigned channel is reserved for handoffs, it is

a. Guard channel concept
b. Fixed channel assignment
c. Dynamic channel assignment
d. None of the above
Answer  Explanation 

ANSWER: Guard channel concept

Explanation:
No explanation is available for this question!
2)   3G W-CDMA is also known as

a. UMTS
b. DECT
c. DCS-1800
d. ETACS
Answer  Explanation 

ANSWER: UMTS

Explanation:
No explanation is available for this question!
3)   Antenna down tilting refers to

a. Focusing radio energy towards ground
b. Decreasing the strength of antenna
c. Decreasing the S/N ratio at the antenna input
d. All of the above
Answer  Explanation 

ANSWER: Focusing radio energy towards ground

Explanation:
No explanation is available for this question!
4)   Distributed antenna systems are used at

a. Transmitters of mobile systems
b. Transmitters of base stations
c. Inputs and outputs of repeaters
d. Receivers of mobile stations
Answer  Explanation 

ANSWER: Inputs and outputs of repeaters

Explanation:
No explanation is available for this question!
5)   The techniques used to improve the capacity of cellular systems are

a. Splitting
b. Sectoring
c. Coverage zone approach
d. All of the above
Answer  Explanation 

ANSWER: All of the above

Explanation:
No explanation is available for this question!
6)   Traffic intensity is expressed in

a. Erlangs /MHz /km2
b. Erlangs
c. λ/ sec
d. dB/sec
Answer  Explanation 

ANSWER: Erlangs

Explanation:
No explanation is available for this question!
7)   Grade of service refers to

a. Accommodating large number of users in limited spectrum
b. Ability of a user to access trunked system during busy hour
c. Two calls in progress in nearby mobile stations
d. High speed users with large coverage area
Answer  Explanation 

ANSWER: Ability of a user to access trunked system during busy hour

Explanation:
No explanation is available for this question!
8)   Increase in Co- channel reuse ratio indicates

a. Better transmission quality
b. Larger capacity
c. Low co-channel interference
d. Both a and c
e. Both a and b
Answer  Explanation 

ANSWER: Both a and c

Explanation:
No explanation is available for this question!
9)   Co-channel reuse ratio depends upon

a. Radius of the cell
b. Distance between the centers of the co channel cells
c. Frequency allocation of nearest cells
d. Both a and b
e. Both b and c
Answer  Explanation 

ANSWER: Both a and b

Explanation:
No explanation is available for this question!
10)   Interference in frequency bands may lead to

a. Cross talk
b. Missed calls
c. Blocked calls
d. All of the above
Answer  Explanation 

ANSWER: All of the above

Explanation:
No explanation is available for this question!
1 2 3 4 5 6

Related Content

▲