CCNA Wireless 640-722 Official Cert Guide

Cisco Compatible Extensions

The wireless clients described in the previous sections are fairly straightforward; the client has a wireless network adapter and controls the SSID and wireless security that are used to associate with an AP. Beyond that, the AP can make a safe assumption that the client complies with the 802.11 standard and supports certain data rates, but it knows little else about the client and its capabilities.

For example, without thorough testing, how do you know whether a wireless client and its driver software release support Wi-Fi Protected Access Version 2 (WPA2) with EAP Transport Layer Security (EAP-TLS) or some other security scheme? How do you know whether a client can optimally transport audio and video over wireless? ...