This module summary discusses three key points about wireless LANs (WLANs): 1) the 802.11 standards define transmission characteristics for WLANs and Wi-Fi Certification ensures device compatibility, 2) security has evolved to include 802.1x and WPA to address common WLAN threats, and 3) wireless implementations are affected by distance, speed, and device form factors.

1. © 2007 Cisco Systems, Inc. All rights reserved. ICND1 v1.0—3-1
Module Summary
 The various 802.11 standards identify the characteristics of the
transmissions used by WLANs, while WI-Fi Certification ensures
compatibility between devices.
 To address common threats to WLAN services, security has
evolved to include 802.1x and WPA.
 Wireless implementations are affected by distance, speed, and
form factors.

2. © 2007 Cisco Systems, Inc. All rights reserved. ICND1 v1.0—3-2