Data Communication MCQs with Answers
Practice important Data Communication MCQs with answers and explanations.
Multiple Choice Questions
Q3231: Fill in the blank: _______ refers to the bending and scattering of radio waves as they pass through various obstacles in their path.
- A: Multipath propagation
- B: Signal enhancement
- C: Noise interference
- D: Wave attenuation
View Answer
A
Q3232: Which of the following is NOT a characteristic of wireless LANs?
- A: High attenuation
- B: Fixed and stable connections
- C: Interference
- D: Multipath propagation
View Answer
B
Q3233: Which of the following is a challenge faced by wireless LANs but not by wired LANs?
- A: Attenuation
- B: Signal stability
- C: Device disconnection
- D: Fixed connections
View Answer
A
Q3234: What is the primary cause of signal attenuation in a wireless network?
- A: Distance between devices and access points
- B: Physical connections between devices
- C: Distance between routers
- D: Number of devices connected
View Answer
A
Q3235: Which of the following terms refers to the effect of objects causing the signal to scatter and take multiple paths in a wireless network?
- A: Multipath propagation
- B: Attenuation
- C: Propagation loss
- D: Interference
View Answer
A
Q3236: Fill in the blank: _______ in wireless networks can lead to slower data transfer and dropped connections.
- A: Interference
- B: Fixed connections
- C: Low latency
- D: High speed
View Answer
A
Q3237: What happens when signals are subjected to multipath propagation in a wireless network?
- A: Signals may arrive at the receiver at different times, causing delays and interference
- B: Signals are reflected, leading to better data rates
- C: Signals are amplified for better quality
- D: Signals are absorbed by surrounding materials
View Answer
A
Q3238: Which of the following best describes attenuation in wireless networks?
- A: The weakening of a signal as it travels through the air
- B: An increase in signal strength
- C: The scattering of a signal across obstacles
- D: An increase in data transfer rate
View Answer
A
Q3239: Which of the following is a key issue in wireless LANs?
- A: Access control
- B: Latency
- C: Packet loss
- D: Signal amplification
View Answer
A
Q3240: Fill in the blank: One of the reasons why CSMA/CD does not work in wireless LANs is that wireless hosts _______ transmit and receive at the same time.
- A: cannot
- B: can
- C: always
- D: sometimes
View Answer
A