Data Communication MCQs with Answers
Practice important Data Communication MCQs with answers and explanations.
Multiple Choice Questions
Q3251: Which of the following is a valid reason for CSMA/CD not working effectively in wireless LANs?
- A: Stations are too far apart to detect each other's signals
- B: Access point fails to provide connectivity
- C: Too many interference signals
- D: Stations use different frequency bands
View Answer
A
Q3252: What issue prevents effective collision detection in wireless LANs?
- A: Signals being too weak
- B: The hidden station problem
- C: Signals being too strong
- D: Signal attenuation
View Answer
B
Q3253: Fill in the blank: Wireless LANs need different access control methods, as CSMA/CD is ineffective due to _______.
- A: the hidden station problem
- B: fixed location
- C: users with less bandwidth
- D: interference
View Answer
A
Q3254: Which of the following factors contributes to the hidden station problem?
- A: Stations transmitting at different frequencies
- B: Distance between stations that prevents detection of signals
- C: Too many stations on the same frequency
- D: Stations using CSMA/CD efficiently
View Answer
B
Q3255: Which standard defines specifications for wireless LANs?
- A: IEEE 802.3
- B: IEEE 802.5
- C: IEEE 802.11
- D: IEEE 802.15
View Answer
C
Q3256: What is the common name for a wireless LAN certified by the Wi-Fi Alliance?
- A: Wireless Ethernet
- B: Wi-Fi
- C: Wireless Internet
- D: Wi-Fi 5
View Answer
B
Q3257: Which layer of the OSI model does IEEE 802.11 cover?
- A: Physical and Data Link
- B: Transport and Network
- C: Application and Presentation
- D: Physical and Transport
View Answer
A
Q3258: The IEEE 802.11 standard is also known as _______.
- A: Wired Ethernet
- B: Wireless Ethernet
- C: Wireless Access Point
- D: Wi-Fi
View Answer
B
Q3259: Which of the following is a service defined by IEEE 802.11?
- A: The basic service set (BSS)
- B: The extended service set (ESS)
- C: The basic and extended service sets (BSS and ESS)
- D: None of the above
View Answer
C
Q3260: Fill in the blank: A BSS is the basic service set that consists of a _______.
- A: single access point
- B: collection of access points
- C: centralized router
- D: connected user device
View Answer
A