MCSA/MCSE Self-Paced Training Kit (Exam 70-270): Installing ...

Lesson Summary
■ 802.11 standards include the following:
Lesson 3 Configuring Wireless Connections
15-41
❑ 802.11b, which offers data transfer rates of 5.5 Mbps and 11 Mbps, and operates
in the 2.45 GHz radio frequency.
❑ 802.11a, which offers data transfer rates up to 54 Mbps and operates in the
5.8 GHz frequency.
❑ 802.11g, which offers data transfer rates up to 54 Mbps and operates in the
2.4 GHz frequency.
■ Windows XP Professional can operate in two wireless networking modes:
❑ Ad-hoc wireless networking, in which there are multiple stations but no AP.
Ad-hoc wireless networks are technically known as independent basic service
sets.
❑ Infrastructure wireless networking, in which stations connect to an AP. Infrastructure
wireless networks are technically known as basic service sets. Basic
service sets can be network together to create extended service sets.
■ You can protect wireless networks in the following ways:
❑ By filtering MAC addresses so that only specified computers can connect to
an AP.
❑ By disabling SSID broadcasts so that casual intruders cannot detect the wireless
network.
❑ By using WEP encryption, which is widely supported but also has widely recognized
flaws.
❑ By using WPA encryption, which provides stronger encryption than WEP.
■ Windows XP Professional supports Zero Client Configuration, which means that
Windows can automatically detect and connect to wireless networks. For secured
networks, you must configure the client to access the network properly, but connection
after that configuration is also automatic.