Question

802.11 MAC Frame: FC -- What is the next component?

A) Frame Control (FC)
B) Duration/ID field (DUR)
C) Address 1 (ADD1)
D) Address 2 (ADD2)

Answer 1

The next component following the frame control (FC) field in an 802.11 MAC frame is the Duration/ID field (DUR), which indicates the duration of the channel occupancy. Therefore, the correct answer is B) Duration/ID field (DUR).

Step-by-step explanation:

The question refers to the components of the 802.11 MAC frame, specifically what follows after the frame control (FC) field.

The correct answer is B) Duration/ID field (DUR). In the structure of an 802.11 MAC frame, the Duration/ID field immediately follows the Frame Control field. The Duration/ID field serves to indicate the time period over which the channel will be occupied, thus allowing other devices to know when the medium will be free.

The sequence of the first four components in the header of an 802.11 MAC frame is as follows:

1. Frame Control (FC)
2. Duration/ID field (DUR)
3. Address 1 (ADD1) - the receiver MAC address
4. Address 2 (ADD2) - the transmitter MAC address