BSS coloring is applied to which element to help reduce interference?

BSS coloring is applied to which element to help reduce interference?

• A. Client devices
• B. Wi-Fi channels
• C. APs
• D. Rogue APs detection

Answer: (B)

BSS coloring is a technique that tags the transmissions of a BSS on a shared channel with a color, so nearby overlapping BSSs can be distinguished. The color is carried in the PHY header of frames, allowing devices to decide whether to defer or proceed based on whether the incoming signal belongs to the same BSS or a different one. When a different-colored BSS is on the same channel, a receiver may allow the transmission to continue if the other signal is weaker, enabling more simultaneous use of the same channel and reducing overall interference in dense deployments. This makes the element being colored the transmissions on the Wi‑Fi channel by a BSS, which is why the best choice is the channel itself. Other options don’t fit because BSS coloring is not about individual clients, APs themselves, or rogue AP detection—it's about differentiating BSSs on the same channel to improve spatial reuse.

BSS coloring is a technique that tags the transmissions of a BSS on a shared channel with a color, so nearby overlapping BSSs can be distinguished. The color is carried in the PHY header of frames, allowing devices to decide whether to defer or proceed based on whether the incoming signal belongs to the same BSS or a different one. When a different-colored BSS is on the same channel, a receiver may allow the transmission to continue if the other signal is weaker, enabling more simultaneous use of the same channel and reducing overall interference in dense deployments. This makes the element being colored the transmissions on the Wi‑Fi channel by a BSS, which is why the best choice is the channel itself. Other options don’t fit because BSS coloring is not about individual clients, APs themselves, or rogue AP detection—it's about differentiating BSSs on the same channel to improve spatial reuse.