Wireless networks work in one of two modes that are also referred to as topologies. These two modes are
ad-hoc mode and infrastructure mode. The mode you implement depends on whether you want your
computers to communicate directly with each other, or via a WAP.
• In ad-hoc mode, data is transferred to and from wireless network adapters connected to the computers.
This cuts out the need to purchase a WAP. Throughput rates between two wireless network adapters are
twice as fast as when you use a WAP. However, a network in ad-hoc mode cannot connect to a wired
network as a WAP is required to provide connectivity to a wired network. An ad-hoc network is also
called a peer-to-peer network.
• In infrastructure mode, data is transferred between computers via a WAP. Because a WAP is used in
infrastructure mode, it provides connectivity with a wired network, allowing you to expand a wired
network with wireless capability. Your wired and wirelessly networked computers can communicate
with each other. In addition, a WAP can extend your wireless network's range as placing a WAP
between two wireless network adapters doubles their range. Also, some WAPs have a built-in router and
firewall. The router allows you to share Internet access between all your computers, and the firewall
hides your network. Some of these multifunction access points include a hub with RJ-45 ports.