This module introduced the rapidly evolving technology of WLANs. WLANs
provide the flexibility, mobility, and scalability that users want. Current
WLAN technologies operate in the 2.4-GHz and 5-GHz ranges.
This module
discussed the effect that wireless networking has had on the networking
community. It introduced different types of networking media that can be used
with wireless networking. It also discussed the basic components of a WLAN,
which are the AP, the client adapters, and antennas. Client adapters come in a
variety of form factors for easy installation in desktops, notebooks, or PDAs.
The four major factors that network administrators need to consider when
deciding on wireless are high availability, scalability, manageability, and an
open architecture. Other important factors such as cost and security were also
discussed.