A county facilities WLAN finishes either PSK or 802.1X authenticati…

Question

A county facilities WLAN finishes either PSK or 802.1X authentication for building-inspector tablets. What is the primary purpose of the 4-way handshake that follows?

Accepted Answer

Derive and confirm the pairwise transient keys that will protect unicast traffic for that session — Think of the 4-way handshake as the ceremony after you prove who you are—now both sides mint the session keys that actually lock the conversation. PSK or 802.1X got you in the door; the handshake hangs the padlocks on the unicast frames.

Answer

Replace the SSID name advertised in beacons so inspectors join a hidden municipal SSID

Answer

Negotiate the wired VLAN ID the access switch will assign after RADIUS accounting starts

Answer

Upgrade every AP firmware channel plan before the first data frame is allowed

A county facilities WLAN finishes either PSK or 802.1X authentication for building-inspector tablets. What is the primary purpose of the 4-way handshake that follows?

Short Explanation

Full Explanation