Data Communication MCQs with Answers
Practice important Data Communication MCQs with answers and explanations.
Multiple Choice Questions
Q2681: CDMA is also known as ______.
- A: Code Sharing Network
- B: Time Split Protocol
- C: Frequency Switch Access
- D: Spread Spectrum Technique
View Answer
D
Q2682: In CDMA, each user's signal is multiplied by a unique ______.
- A: bit stream
- B: carrier signal
- C: spreading code
- D: tone frequency
View Answer
C
Q2683: Which system uses the concept of spreading the signal over a wide bandwidth?
- A: FDMA
- B: CDMA
- C: TDMA
- D: SDMA
View Answer
B
Q2684: Which access method increases resistance to interference and eavesdropping?
- A: TDMA
- B: FDMA
- C: CDMA
- D: OFDM
View Answer
C
Q2685: CDMA works by combining user data with ______.
- A: encrypted signals
- B: low pass filters
- C: spreading codes
- D: digital multiplexers
View Answer
C
Q2686: CDMA uses which of the following to enable secure communication?
- A: Encryption
- B: Frequency hopping
- C: Unique codes
- D: Direct modulation
View Answer
C
Q2687: Fill in the blank: In CDMA, ______ multiple access is achieved by assigning a unique code to each user.
- A: code-based
- B: time-based
- C: frequency-based
- D: channel-based
View Answer
A
Q2688: CDMA systems use which form of communication?
- A: time-shared
- B: frequency exclusive
- C: code-multiplexed
- D: data-only
View Answer
C
Q2689: Which is a benefit of CDMA?
- A: Low complexity
- B: No bandwidth usage
- C: High capacity and efficient use of spectrum
- D: Limited user access
View Answer
C
Q2690: CDMA differs from FDMA in that ______.
- A: multiple channels are assigned unique frequencies
- B: only one channel occupies the entire bandwidth of the link
- C: users are assigned separate time slots
- D: it uses multiple antennas
View Answer
B