Data Communication MCQs with Answers
Practice important Data Communication MCQs with answers and explanations.
Multiple Choice Questions
Q3291: Which IEEE 802.11 MAC sub-layer is responsible for providing medium access in an infrastructure mode?
- A: Distributed Coordination Function (DCF)
- B: Point Coordination Function (PCF)
- C: Access Control Function (ACF)
- D: Extended Distribution Function (EDF)
View Answer
B
Q3292: Fill in the blank: The Point Coordination Function (PCF) in IEEE 802.11 uses _______ to manage data transmission.
- A: polling
- B: CSMA/CA
- C: handshaking
- D: quorum voting
View Answer
A
Q3293: Which of the following best describes the main difference between DCF and PCF in IEEE 802.11?
- A: DCF is used in ad hoc mode, while PCF is used in infrastructure mode
- B: DCF uses polling to access the medium, while PCF uses CSMA/CA
- C: PCF is used for point-to-point communication, while DCF is used for broadcast communication
- D: DCF provides prioritization, while PCF is for simple data exchange
View Answer
A
Q3294: What mechanism does the Point Coordination Function (PCF) use to allow stations to access the wireless medium?
- A: Polling
- B: Carrier sense multiple access (CSMA)
- C: Encryption keys
- D: Direct medium access
View Answer
A
Q3295: Fill in the blank: In IEEE 802.11, the Point Coordination Function (PCF) is part of the _______ sub-layer.
- A: Medium Access Control (MAC)
- B: Physical Layer
- C: Network Layer
- D: Application Layer
View Answer
A
Q3296: Which of the following is a key feature of the Point Coordination Function (PCF) in IEEE 802.11?
- A: It allows for contention-free access in infrastructure mode
- B: It is used for collision detection in the wireless medium
- C: It is responsible for encryption of data during transmission
- D: It assigns IP addresses to devices
View Answer
B
Q3297: Fill in the blank: The Point Coordination Function (PCF) in IEEE 802.11 provides a _______ mechanism for data transfer.
- A: contention-free
- B: collision-based
- C: secure-only
- D: channel-selection
View Answer
A
Q3298: What type of stations are used in the Point Coordination Function (PCF) mode of IEEE 802.11?
- A: Stations with a polling mechanism
- B: Stations without CSMA/CA support
- C: Stations that communicate directly without a coordinator
- D: Stations that rely on DCF only
View Answer
A
Q3299: The Point Coordination Function (PCF) in IEEE 802.11 is used to provide which of the following?
- A: Collision detection and avoidance
- B: Contiguous time slots for each device
- C: Encrypted communication between stations
- D: Polling-based communication in a structured environment
View Answer
A
Q3300: Fill in the blank: The Point Coordinator in PCF mode is responsible for managing _______ in an IEEE 802.11 wireless network.
- A: polling
- B: security protocols
- C: routing tables
- D: data encryption
View Answer
A