Explore topic-wise MCQs in Wireless Mobile Communications.

This section includes 20 Mcqs, each offering curated multiple-choice questions to sharpen your Wireless Mobile Communications knowledge and support exam preparation. Choose a topic below to get started.

1.

____________ arises from the fact that the spreading sequences of different users are not orthogonal.

A. Near-far problem
B. Line of sight
C. Windowing
D. Self jamming
Answer» E.
Discussion
2.

____________ is used to improve reception by collecting time delayed versions of the required signal.

A. RAKE receiver
B. Equalizer
C. Frequency modulator
D. High pass filter
Answer» B. Equalizer
Discussion
3.

In CDMA, symbol duration is ___________ than channel delay spread.

A. Equal
B. Greater
C. Slightly greater
D. Much less
Answer» E.
Discussion
4.

___________ problem occurs when many mobile users share the same channel.

A. Near-far
B. Activation
C. Line of sight
D. Windowing
Answer» B. Activation
Discussion
5.

All users in CDMA system uses __________ carrier frequency.

A. Different
B. Two
C. Ten
D. Same
Answer» E.
Discussion
6.

A frequency hopped system does not provide security.

A. True
B. False
Answer» C.
Discussion
7.

If the rate of change of the carrier frequency is greater than the symbol rate, then the system is referred as ___________

A. Fast frequency hopping system
B. Slow frequency hopping system
C. Time division frequency hopping system
D. Code division multiple access system
Answer» B. Slow frequency hopping system
Discussion
8.

___________ is a digital multiple access system in which carrier frequencies are varied in pseudorandom order.

A. CDMA
B. FCDMA
C. FHMA
D. SDMA
Answer» D. SDMA
Discussion
9.

SSMA is bandwidth efficient when used with a single user.

A. True
B. False
Answer» C.
Discussion
10.

IN_CDMA,_SYMBOL_DURATION_IS________THAN_CHANNEL_DELAY_SPREAD.?$

A. Equal
B. Greater
C. Slightly greater
D. Much less
Answer» E.
Discussion
11.

_______ arises from the fact that the spreading sequences of different users are not orthogonal.$

A. Near-far problem
B. Line of sight
C. Windowing
D. Self jamming
Answer» E.
Discussion
12.

________is_used_to_improve_reception_by_collecting_time_delayed_versions_of_the_required_signal.$

A. RAKE receiver
B. Equalizer
C. Frequency modulator
D. High pass filter
Answer» B. Equalizer
Discussion
13.

______ problem occurs when many mobile users share the same channel?

A. Near-far
B. Activation
C. Line of sight
D. Windowing
Answer» B. Activation
Discussion
14.

All users in CDMA system uses _____- carrier frequency.

A. Different
B. Two
C. Ten
D. Same
Answer» E.
Discussion
15.

A frequency hopped system does not provide security. State whether True or False.

A. True
B. False
Answer» C.
Discussion
16.

If the rate of change of the carrier frequency is greater than the symbol rate, then the system is referred as ______

A. Fast frequency hopping system
B. Slow frequency hopping system
C. Time division frequency hopping system
D. Code division multiple access system
Answer» B. Slow frequency hopping system
Discussion
17.

______ is a digital multiple access system in which carrier frequencies are varied in pseudorandom order.

A. CDMA
B. FCDMA
C. FHMA
D. SDMA
Answer» D. SDMA
Discussion
18.

SSMA is bandwidth efficient when used with a single user. State whether True or False.

A. True
B. False
Answer» C.
Discussion
19.

PN sequence converts _______ signal to ______ signal.

A. Narrowband, wideband
B. Wideband, narrowband
C. Unmodulated, modulated
D. Low frequency, high frequency
Answer» B. Wideband, narrowband
Discussion
20.

SSMA uses signals which have a transmission bandwidth that is smaller than the minimum required RF bandwidth.

A. True
B. False
Answer» C.
Discussion