Computer Networks

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A computer network is an interconnection among two or more computers or computing devices that allows them to share data and resources among each other. Examples include computers in a school lab conn

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A node is any device that is part of a network and can receive, create, store or send data to different network routes. Examples include computers, servers, printers, routers, switches, and mobile pho

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PAN stands for Personal Area Network. It connects personal devices like smartphones, laptops, tablets within an approximate range of 10 metres. Example: A mobile phone connected to laptop via Bluetoot

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LAN (Local Area Network): Covers limited area like a room, building, or campus. High data transfer rates (10 Mbps to 1000 Mbps). WAN (Wide Area Network): Covers large geographical areas across countri

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MAN is a network that covers a larger geographical area like a city or town, extending up to 30-40 km. It connects multiple LANs together. Examples include cable TV networks and cable-based broadband

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MODEM stands for MOdulator DEModulator. It converts digital data (0s and 1s) from computers into analog signals for transmission, and converts received analog signals back to digital data. Essential f

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Hub: Sends data to ALL connected devices, causing collisions when multiple devices send data simultaneously. Switch: Reads destination address and sends data only to the intended device. Can forward m

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A router connects different networks (like LAN to Internet), analyzes data packets, decides routing paths, and can repackage data for different network types. It has advanced capabilities compared to