What is the largest IEEE 802.11 data frame that can traverse a WLAN without fragmentation?

What is the largest IEEE 802.11 data frame that can traverse a WLAN without fragmentation?

• A. 2,346 bytes
• B. 2,048 bytes
• C. 1,500 bytes
• D. 3,000 bytes

Answer: (A)

In 802.11 networks, fragmentation is controlled by the fragmentation threshold, which sets the maximum MSDU size that can be sent in a single data frame without needing to be split. The typical default value for this threshold is 2,346 bytes, so any payload up to that size can traverse the WLAN in one frame. If the MSDU is larger than that, the MAC layer will fragment it into multiple frames, each carrying up to 2,346 bytes of MSDU. The other numbers don’t reflect the standard threshold used to avoid fragmentation, so they wouldn’t be transmitted as one unfragmented frame.

In 802.11 networks, fragmentation is controlled by the fragmentation threshold, which sets the maximum MSDU size that can be sent in a single data frame without needing to be split. The typical default value for this threshold is 2,346 bytes, so any payload up to that size can traverse the WLAN in one frame. If the MSDU is larger than that, the MAC layer will fragment it into multiple frames, each carrying up to 2,346 bytes of MSDU. The other numbers don’t reflect the standard threshold used to avoid fragmentation, so they wouldn’t be transmitted as one unfragmented frame.