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Client-Server Network
Client-server architecture is a network design with two main roles: clients and servers. Clients
request servers for resources or services, such as a Web page. These resources are provided and
managed by servers. For example, a web browser (client) asks a web server for a Web page, and
the server delivers it. The Internet commonly uses this setup for accessing and hosting websites.
Internet
Clients
Server
WIRELESS NETWORKING TECHNOLOGY
In wireless networking, computers connect without using physical wires. Instead, it relies on
electromagnetic waves such as infrared, microwaves, and radio waves to transmit data. The
type of technology used depends on the distance and speed needed. Two common wireless
technologies are Wi-Fi and Bluetooth.
Wi-Fi
Wireless Fidelity (Wi-Fi) is a widely used wireless
communication technology for homes, businesses, local
area networks (LANs), and public hotspots. Devices like
PCs, game consoles, mobile phones, and MP3 players can
connect to the Internet when they are within range of a
Wi-Fi network. Wi-Fi enables local area networks to be
created without the need for cables, making it easier and
more cost-effective to expand the network.
Bluetooth
Bluetooth is a technology that enables low-power devices
to communicate wirelessly over short distances, usually up
to 100 meters. It allows devices, such as mobile phones,
laptops, printers, and GPS receivers, to connect and
exchange information. The latest version, Bluetooth 5.4,
supports data transfer speeds of up to 2 Mbps and uses a
2.4 GHz radio frequency.
Computer Networking 123

