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8.3.5 Wireless Communication
In this case, data is transferred using electromagnetic waves such as radio waves.
These networks are characterized by flexibility, as computer devices do not need a
fixed connection to the network. Additionally, they are easy to install, as there is no
need to run cables between network endpoints. To connect any device to a wireless
local network, a wireless network card (Wi-Fi card) must be provided.

Examples of wireless communication networks include:
• Mobile networks
• Satellite communication networks
• Wi-Fi

8.4 Local Area Network Devices

To transfer data between different computer devices, other auxiliary devices must be
used to establish the connection correctly. For example, to connect several devices
in a home, the cables coming out of these devices cannot be directly connected to
each other. Instead, a hub or a switch must be used to achieve the required high
speeds. Similarly, when connecting multiple networks that are distant from each
other, a router must be used to determine the best routes for sending data. The
function of these devices is to assist in connecting data efficiently and quickly, not to
send or receive data. We will learn more about these devices in detail later.

Access Point Router

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