Data Communication MCQs with Answers
Practice important Data Communication MCQs with answers and explanations.
Chapter: 178
Q2661:
Which of the following is a disadvantage of FDMA?
A. High synchronization complexity
B. Increased bandwidth requirements
C. Low power usage
D. Improved spectral efficiency
Correct Answer:
B
Chapter: 178
Q2662:
TDMA systems require ______ to ensure proper user access.
A. code synchronization
B. time synchronization
C. frequency hopping
D. random access
Correct Answer:
B
Chapter: 178
Q2663:
Which protocol divides access to a channel by assigning time slots to each user?
A. FDMA
B. TDMA
C. CDMA
D. SDMA
Correct Answer:
B
Chapter: 178
Q2664:
In TDMA, two users using the same frequency at different times is an example of ______.
A. multiplexing
B. time division
C. frequency sharing
D. channel collision
Correct Answer:
B
Chapter: 178
Q2665:
What is the key benefit of using TDMA in digital communication?
A. Increased latency
B. Reduced bandwidth
C. Efficient use of time and frequency
D. Interference between users
Correct Answer:
C
Chapter: 178
Q2666:
FDMA is most suitable for ______.
A. high-data-rate systems
B. short-range communication
C. analog voice transmission
D. video streaming
Correct Answer:
C
Chapter: 178
Q2667:
Which of the following requires guard bands between frequencies?
A. FDMA
B. TDMA
C. CDMA
D. OFDM
Correct Answer:
A
Chapter: 179
Q2668:
What does CDMA stand for?
A. Code Data Multiplexing Access
B. Code Division Multiple Access
C. Carrier Division Multiple Access
D. Code Distributed Multiplex Access
Correct Answer:
B
Chapter: 179
Q2669:
In CDMA, each user is assigned a unique ______.
A. time slot
B. frequency
C. code
D. channel
Correct Answer:
C
Chapter: 179
Q2670:
Which of the following techniques allows multiple users to occupy the same frequency spectrum simultaneously?
A. FDMA
B. TDMA
C. CDMA
D. SDMA
Correct Answer:
C
Chapter: 179
Q2671:
CDMA separates users using ______.
A. time division
B. frequency division
C. code division
D. channel splitting
Correct Answer:
C
Chapter: 179
Q2672:
CDMA is considered a type of ______ multiplexing.
A. frequency
B. time
C. code
D. channel
Correct Answer:
C
Chapter: 179
Q2673:
CDMA is widely used in which generation of mobile communication?
A. 2G
B. 3G
C. 4G
D. 5G
Correct Answer:
B
Chapter: 179
Q2674:
Fill in the blank: ______ allows multiple users to transmit data simultaneously over the same frequency band using unique codes.
A. FDMA
B. TDMA
C. CDMA
D. SDMA
Correct Answer:
C
Chapter: 179
Q2675:
Each user in CDMA is assigned a unique ______ that modulates their data.
A. channel
B. time slot
C. spread spectrum code
D. multiplex filter
Correct Answer:
C
Chapter: 179
Q2676:
Which of the following best describes how CDMA manages multiple users?
A. Assigning time slots
B. Assigning frequency bands
C. Using unique spreading codes
D. Using modulation techniques
Correct Answer:
C
Chapter: 179
Q2677:
Which type of signal processing is essential in CDMA?
A. code filtering
B. analog modulation
C. spread spectrum
D. digital tuning
Correct Answer:
C
Chapter: 179
Q2678:
In CDMA, signals are spread across a ______ frequency band.
A. very low
B. specific
C. narrow
D. wide
Correct Answer:
D
Chapter: 179
Q2679:
The main advantage of CDMA over FDMA and TDMA is ______.
A. low latency
B. simplicity in coding
C. higher user capacity
D. perfect synchronization
Correct Answer:
C
Chapter: 179
Q2680:
Which technique allows overlapping of user signals in time and frequency domain using codes?
A. TDMA
B. CDMA
C. FDMA
D. OFDM
Correct Answer:
B