Wireless Communication MCQ
Get your knowledge updated with Wireless Communication MCQs related topics like Wireless Networks, Radio wave propagation, Cellular communication, Satellite communication, Bluetooth, Wifi, antennas, Modulation techniques, Modern Communication system with Multiple choice questions that may help for all engineering students as well as for competitive exams such as GATE ESE, SSC JE, RRB JE, PSU, etc. Try topicwise Wireless Communication mcq questions with answers for increasing the result.
Q1.
What is wireless communication?
A. Communication using cables only
B. Transmission of information without physical wires
C. Communication using paper signals
D. Communication using mechanical links
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Correct Answer:
B
Wireless communication transfers data without wired connections.
Q3.
What is radio frequency?
A. Sound frequency range
B. Electromagnetic wave frequency used for communication
C. Heat frequency
D. Mechanical vibration frequency
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Correct Answer:
B
RF is used for wireless transmission.
Q4.
What is modulation?
A. Signal storage
B. Process of varying carrier signal with information signal
C. Signal deletion
D. Power generation
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Correct Answer:
B
Modulation carries information over carrier waves.
Q5.
What is demodulation?
A. Signal amplification
B. Extraction of original signal from carrier
C. Power control
D. Noise addition
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Correct Answer:
B
Demodulation retrieves original information.
Q6.
What is AM in communication?
A. Frequency Modulation
B. Amplitude Modulation
C. Automatic Mode
D. Analog Memory
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Correct Answer:
B
AM varies amplitude of carrier signal.
Q7.
What is FM?
A. Frequency Modulation
B. Fixed Modulation
C. Fast Mode
D. Field Modulation
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Correct Answer:
A
FM varies frequency of carrier signal.
Q8.
What is bandwidth?
A. Power capacity
B. Range of frequencies transmitted
C. Voltage level
D. Current flow
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Correct Answer:
B
Bandwidth defines frequency range.
Q9.
What is antenna?
A. Power generator
B. Device that transmits and receives electromagnetic waves
C. Battery storage
D. Signal filter
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Correct Answer:
B
Antennas are used for wireless transmission.
Q10.
What is transmitter?
A. Device that receives signals
B. Device that sends signals
C. Power storage device
D. Filter circuit
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Correct Answer:
B
Transmitter sends information signals.
Q11.
What is receiver?
A. Device that sends signals
B. Device that receives signals
C. Power generator
D. Amplifier only
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Correct Answer:
B
Receiver captures transmitted signals.
Q13.
What is multipath propagation?
A. Single path transmission
B. Signal reaching receiver via multiple paths
C. No signal transmission
D. Direct wired path
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Correct Answer:
B
Multipath causes signal distortion.
Q14.
What is fading?
A. Signal amplification
B. Variation in signal strength over distance/time
C. Signal storage
D. Power generation
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Correct Answer:
B
Fading reduces signal quality.
Q15.
What is noise in communication?
A. Useful signal
B. Unwanted disturbance in signal
C. Carrier signal
D. Power signal
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Correct Answer:
B
Noise disturbs communication signals.
Q16.
What is SNR?
A. Signal Noise Ratio
B. Signal to Noise Ratio
C. System Noise Rate
D. Signal Network Range
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Correct Answer:
B
SNR measures signal quality vs noise.
Q17.
What is digital communication?
A. Analog only communication
B. Transmission of digital data
C. Mechanical communication
D. Optical only communication
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Correct Answer:
B
Digital communication uses binary data.
Q18.
What is analog communication?
A. Digital data transmission
B. Continuous signal transmission
C. Encrypted communication only
D. Optical communication only
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Correct Answer:
B
Analog uses continuous signals.
Q19.
What is channel in communication?
A. Storage device
B. Medium through which signal travels
C. Power supply
D. Amplifier only
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Correct Answer:
B
Channel carries communication signals.
Q20.
What is baseband signal?
A. High frequency signal
B. Original information signal
C. Noise signal
D. Carrier signal
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Correct Answer:
B
Baseband is original signal before modulation.
Q21.
What is passband signal?
A. Unmodulated signal
B. Modulated signal shifted to higher frequency
C. Noise signal
D. DC signal
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Correct Answer:
B
Passband is modulated signal.
Q22.
What is TDM?
A. Time Division Multiplexing
B. Transfer Data Mode
C. Total Data Management
D. Time Delay Mode
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Correct Answer:
A
TDM shares channel in time slots.
Q23.
What is FDM?
A. Frequency Division Multiplexing
B. Fast Data Mode
C. Field Data Multiplexing
D. Fixed Data Method
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Correct Answer:
A
FDM uses different frequency bands.
Q24.
What is CDMA?
A. Code Division Multiple Access
B. Carrier Data Multiplexing Access
C. Channel Data Management Access
D. Core Data Multiple Access
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Correct Answer:
A
CDMA uses unique codes for users.
Q25.
What is cellular network?
A. Single tower system
B. Network divided into cells for coverage
C. Wired network
D. Satellite only system
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Correct Answer:
B
Cellular networks use multiple cell towers.
Q26.
What is handoff in cellular communication?
A. Signal loss process
B. Transfer of call between base stations
C. Power increase
D. Noise reduction
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Correct Answer:
B
Handoff maintains connection during movement.
Q27.
What is GSM?
A. Global System for Mobile communication
B. General Signal Module
C. Global Satellite Model
D. General Switching Mode
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Correct Answer:
A
GSM is a mobile communication standard.
Q28.
What is LTE?
A. Long Term Evolution
B. Low Transfer Engine
C. Light Transmission Equipment
D. Local Telephony Exchange
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Correct Answer:
A
LTE is high-speed mobile communication.
Q29.
What is 5G?
A. 5th Generation mobile network
B. Fast Wi-Fi only system
C. Fiber network only
D. Analog system
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Correct Answer:
A
5G provides high-speed wireless communication.
Q30.
What is MIMO?
A. Multiple Input Multiple Output
B. Mobile Internet Mobile Output
C. Multi Interface Modem Operation
D. Main Input Main Output
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Correct Answer:
A
MIMO improves communication capacity.
