802.11r fast BSS transition is designed to...

802.11r fast BSS transition is designed to...

• A. Reduces handoff delay for real-time applications.
• B. Increases channel width.
• C. Enables RADIUS-based authentication.
• D. Requires separate VLAN for roaming.

Answer: (A)

Reducing the handoff delay when a client roams from one AP to another is what 802.11r fast BSS transition is designed to achieve. It enables faster re-authentication by allowing PMK caching and pre-auth between APs, so the new AP can quickly authenticate the client without going through the full EAP/RADIUS exchange. This minimizes disruption for time-sensitive traffic, making roaming nearly seamless for real-time applications. The other options don’t capture this purpose: increasing channel width affects throughput, not roaming speed; RADIUS-based authentication is a general mechanism and not specific to fast roaming; using a separate VLAN for roaming is a deployment detail, not the function of 802.11r.

Reducing the handoff delay when a client roams from one AP to another is what 802.11r fast BSS transition is designed to achieve. It enables faster re-authentication by allowing PMK caching and pre-auth between APs, so the new AP can quickly authenticate the client without going through the full EAP/RADIUS exchange. This minimizes disruption for time-sensitive traffic, making roaming nearly seamless for real-time applications. The other options don’t capture this purpose: increasing channel width affects throughput, not roaming speed; RADIUS-based authentication is a general mechanism and not specific to fast roaming; using a separate VLAN for roaming is a deployment detail, not the function of 802.11r.