When an ACK frame is not received by the transmitting STA, what is assumed?

The correct answer is C. The frame was not delivered and must be retransmitted. An ACK (Acknowledgement) frame is a short control frame that is sent by the receiver of a data or management frame to confirm that the frame was received correctly. The ACK frame is sent after a SIFS (Short Interframe Space) interval, which is the shortest time gap between…

Wireless LAN (WLAN) Hardware and Software

Question

Options

AThe receiver processed the frame, but did not respond with an ACK frame because 802.11w is
BThe frame was correctly delivered
CThe frame was not delivered and must be retransmitted
DThe receiver is offline

How the community answered

(56 responses)

A
5% (3)
B
2% (1)
C
91% (51)
D
2% (1)

Explanation

An ACK (Acknowledgement) frame is a short control frame that is sent by the receiver of a data or management frame to confirm that the frame was received correctly. The ACK frame is sent after a SIFS (Short Interframe Space) interval, which is the shortest time gap between frames in 802.11. If the transmitter does not receive an ACK frame within a specified time, it assumes that the frame was not delivered and must be retransmitted. This is part of the 802.11 reliability mechanism that ensures reliable data delivery over an unreliable wireless medium.

Topics

#ACK frame#retransmission#802.11 MAC#frame delivery

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