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Chapter 7: Networking Your Computer
Wireless Ethernet speed and frequency
Wireless Ethernet is available at two different speeds and at two different frequencies. The
following table compares the various wireless Ethernet network types.
Important
If your computer came equipped with an internal radio frequency
wireless device, see “Safety, Regulatory, and Legal Information” in
your user’s guide for general wireless regulatory and safety
guidelines. To find out if your computer has an internal wireless
device, check the device manager. For more information, see
“Determining if wireless Ethernet is already installed on your
computers” on page 82
.
Important
Note any antenna placement constraints in the user guide of each
type of wireless device in your network.
Network Type Speed Frequency Advantages Disadvantages
IEEE 802.11a 54 Mbps 5 GHz Less possible interference than
IEEE 802.11b and
IEEE 802.11g
■
Shorter range (25 to 75 feet)
than IEEE 802.11b and
IEEE 802.11g
■
Not compatible with
IEEE 802.11b or
IEEE 802.11g networks
IEEE 802.11b 11 Mbps 2.4 GHz
■
Large number of access
points already exist in
airports, college campuses,
and businesses
■
Compatible with
IEEE 802.11g networks
■
Longer range (100 to 150
feet) than IEEE 802.11a
■
Possible interference from
cordless telephones and
microwaves
■
Not compatible with
IEEE 802.11a networks
IEEE 802.11g 54 Mbps 2.4 GHz
■
Compatible with
IEEE 802.11b networks
■
Longer range (100 to 150
feet) than IEEE 802.11a
■
Possible interference from
cordless telephones and
microwaves
■
Not compatible with
IEEE 802.11a networks
Important
The speed of a wireless network is related to signal strength. Signal
strength is affected by the distance between your wireless network
devices, by radio interference, and by interference from natural
obstructions such as walls, floors, and doors.