Data Communication MCQs with Answers
Practice important Data Communication MCQs with answers and explanations.
Chapter: 210
Q3301:
Which layer of IEEE 802.11 does the Point Coordination Function (PCF) belong to?
A. Medium Access Control Layer
B. Physical Layer
C. Network Layer
D. Application Layer
Correct Answer:
A
Chapter: 210
Q3302:
Fill in the blank: The Point Coordination Function (PCF) in IEEE 802.11 can be used for _______ in wireless networks.
A. Providing contention-free access
B. Enhancing routing protocols
C. Encrypting data across the network
D. Transmission over physical channels
Correct Answer:
A
Chapter: 210
Q3303:
Which of the following is NOT a type of frame in IEEE 802.11?
A. Management Frame
B. Data Frame
C. Control Frame
D. Information Frame
Correct Answer:
D
Chapter: 210
Q3304:
The frequency range 902–928 MHz is part of the _______ band.
A. Industrial, Scientific, and Medical (ISM)
B. Commercial Radio Band
C. WiFi Band
D. High-Frequency Band
Correct Answer:
A
Chapter: 210
Q3305:
Which frame type in IEEE 802.11 is used for communication between stations?
A. Management Frame
B. Control Frame
C. Data Frame
D. Packet Frame
Correct Answer:
C
Chapter: 210
Q3306:
The 2.400–4.835 GHz frequency range is used in which of the following bands?
A. ISM Band
B. WiFi Band
C. 4G Band
D. 5G Band
Correct Answer:
A
Chapter: 210
Q3307:
Fill in the blank: The 5.725–5.850 GHz frequency range is used in the _______ band.
A. ISM Band
B. WiFi Band
C. 5G Band
D. Unlicensed Band
Correct Answer:
A
Chapter: 210
Q3308:
Which of the following is a characteristic of the physical layer in wireless communication?
A. It determines the type of data frames used
B. It defines the frequency bands for transmission
C. It handles error correction
D. It performs packet routing
Correct Answer:
B
Chapter: 210
Q3309:
Fill in the blank: IEEE 802.11 defines _______ as a communication frame used for controlling access to the medium.
A. Control Frames
B. Management Frames
C. Data Frames
D. Information Frames
Correct Answer:
A
Chapter: 210
Q3310:
Which of the following bands is used for most IEEE 802.11 wireless devices?
A. 902–928 MHz
B. 2.400–4.835 GHz
C. 5.725–5.850 GHz
D. High-Frequency Band
Correct Answer:
B
Chapter: 210
Q3311:
What is the primary purpose of management frames in IEEE 802.11?
A. To carry data between devices
B. To provide error correction
C. To manage network authentication and association
D. To facilitate medium access control
Correct Answer:
C
Chapter: 210
Q3312:
Fill in the blank: The _______ frequency range is primarily used for long-range wireless communication in IEEE 802.11.
A. 5.725–5.850 GHz
B. 2.400–4.835 GHz
C. 902–928 MHz
D. None of the above
Correct Answer:
A
Chapter: 210
Q3313:
Which of the following is the main role of data frames in IEEE 802.11?
A. To establish network connections
B. To manage power consumption
C. To carry user data and network information
Correct Answer:
C
Chapter: 210
Q3314:
Fill in the blank: IEEE 802.11 defines _______ frames for controlling access to the wireless medium and providing synchronization.
A. Control Frames
B. Management Frames
C. Data Frames
D. Packet Frames
Correct Answer:
A
Chapter: 210
Q3315:
What type of frames are used for power management and synchronizing communication in IEEE 802.11?
A. Management Frames
B. Control Frames
C. Data Frames
D. Access Frames
Correct Answer:
A
Chapter: 210
Q3316:
What is the frequency range used for most wireless communication implementations, except infrared, in IEEE 802.11?
A. 902–928 MHz
B. 2.400–4.835 GHz
C. 5.725–5.850 GHz
D. ISM Band
Correct Answer:
B
Chapter: 210
Q3317:
Which of the following is a key function of control frames in IEEE 802.11?
A. To send user data
B. To manage the medium and synchronize communication
C. To transmit encryption keys
D. To route packets
Correct Answer:
B
Chapter: 210
Q3318:
Which of the following frames in IEEE 802.11 is used for managing network connections?
A. Control Frames
B. Management Frames
C. Data Frames
D. Authentication Frames
Correct Answer:
B
Chapter: 210
Q3319:
Fill in the blank: Control frames are used to manage the _______ of wireless data transmission.
A. medium access
B. synchronization
C. security
D. traffic flow
Correct Answer:
A
Chapter: 210
Q3320:
Which frequency range is used for IEEE 802.11 devices operating in the ISM band?
A. 902–928 MHz
B. 2.400–4.835 GHz
C. 5.725–5.850 GHz
D. All of the above
Correct Answer:
D