Computer Network Introduction

A Computer Network is a system of interconnected devices (such as computers, servers, and routers) that communicate and share resources, data, and applications. Networks can be classified based on size and scope, including:

1. LAN (Local Area Network): Covers a small area like a home or office.
2. WAN (Wide Area Network): Covers larger areas, like cities or countries (e.g., the Internet).
3. MAN (Metropolitan Area Network): Spans a city or campus.

Key components include nodes (devices), transmission media (wired or wireless), and network protocols like TCP/IP.