Computer Netwrks

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A computer network is a collection of interconnected devices that share resources and information. These devices can include computers, servers, printers, and other hardware. Here are some key points about computer networks:

  1. Components: A network typically consists of nodes (devices like computers and printers) and links (the connections between them, which can be wired or wireless).

  2. Communication Protocols: Networks use protocols, which are sets of rules that determine how data is transmitted and received. Common protocols include TCP/IP, which is the foundation of the internet.

  3. Types of Networks:

    • Local Area Network (LAN): Covers a small geographic area, like an office or building.
    • Wide Area Network (WAN): Spans a large geographic area, such as a city, country, or even globally. The internet is the largest WAN.
    • Personal Area Network (PAN): A small network, typically within a range of a few meters, like Bluetooth connections between a phone and a headset.
    • Metropolitan Area Network (MAN): Covers a larger area than a LAN but smaller than a WAN, such as a city.
  4. Functions: Networks enable various applications and services, such as email, file sharing, internet browsing, and video conferencing. 

  5. Benefits: Networks improve communication, enhance data accessibility, and allow for centralized data management and security.

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