Data Communication MCQs with Answers
Practice important Data Communication MCQs with answers and explanations.
Chapter: 207
Q3241:
What is the hidden station problem in wireless LANs?
A. The inability of stations to detect collisions due to distance or obstacles
B. The failure to transmit data properly
C. The inability to send signals
D. None of the above
Correct Answer:
A
Chapter: 207
Q3242:
Which of the following is NOT a reason why CSMA/CD does not work in wireless LANs?
A. Stations can send and receive simultaneously
B. Stations cannot send and receive at the same time
C. Distance between stations is large
D. The hidden station problem
Correct Answer:
A
Chapter: 207
Q3243:
Fill in the blank: In wireless LANs, CSMA/CD cannot be used effectively because wireless hosts cannot _______ send and receive at the same time.
A. always
B. simultaneously
C. never
D. periodically
Correct Answer:
B
Chapter: 207
Q3244:
Which problem prevents collision detection in wireless LANs?
A. Distance from access point
B. Signal degradation
C. The hidden station problem
D. Multipath interference
Correct Answer:
C
Chapter: 207
Q3245:
What is the main challenge when using CSMA/CD in wireless LANs?
A. The hidden station problem
B. Multiple users accessing the same channel
C. Security issues
D. Limited bandwidth
Correct Answer:
A
Chapter: 207
Q3246:
Fill in the blank: In wireless LANs, the distance between stations can be so large that _______ they can't detect each other's signals.
A. so far
B. that
C. too close
D. to detect
Correct Answer:
B
Chapter: 207
Q3247:
Which of the following is an effect of the hidden station problem?
A. Failure to detect collisions
B. Limited throughput
C. Reduced range
D. Improved network security
Correct Answer:
A
Chapter: 207
Q3248:
What is the main reason why wireless LANs have difficulty implementing CSMA/CD?
A. High power consumption
B. Signal interference
C. No ability to send and receive simultaneously
D. The distance between stations
Correct Answer:
B
Chapter: 207
Q3249:
Fill in the blank: The _______ problem in wireless LANs occurs when stations cannot detect each other's transmissions due to being too far apart.
A. hidden station
B. medium access
C. collision detection
D. signal loss
Correct Answer:
A
Chapter: 207
Q3250:
Which of the following is NOT a problem associated with CSMA/CD in wireless LANs?
A. Multiple stations trying to send data simultaneously
B. The hidden station problem
C. Power to transmit and receive simultaneously
D. The distance between access points
Correct Answer:
D
Chapter: 207
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
Correct Answer:
A
Chapter: 207
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
Correct Answer:
B
Chapter: 207
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
Correct Answer:
A
Chapter: 207
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
Correct Answer:
B
Chapter: 208
Q3255:
Which standard defines specifications for wireless LANs?
A. IEEE 802.3
B. IEEE 802.5
C. IEEE 802.11
D. IEEE 802.15
Correct Answer:
C
Chapter: 208
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
Correct Answer:
B
Chapter: 208
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
Correct Answer:
A
Chapter: 208
Q3258:
The IEEE 802.11 standard is also known as _______.
A. Wired Ethernet
B. Wireless Ethernet
C. Wireless Access Point
D. Wi-Fi
Correct Answer:
B
Chapter: 208
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
Correct Answer:
C
Chapter: 208
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
Correct Answer:
A