Computer Basics and Network Types

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LAN

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A local area network that covers the inside of a home or a public business. Wi-Fi is a type of LAN.

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Metropolitan Area Network

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A MAN is a network that connects multiple LANs, like in a city or college campus.

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WAN

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A Wide Area Network is typically used to connect office buildings or provide public Internet access like in a public park.

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PAN

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A Personal Area Network that connects devices of limited range, includes Wi-Fi networks, fixed wireless data networks, and other Bluetooth.

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BIOS

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Basic Input/Output System is a chip built directly into the computer, known as boot firmware because it is the first program run when the computer is turned on. It initializes all computer functions.

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Common video file formats

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AVI, MOV, MPG, MP4

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Common Microsoft Word file formats

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doc, docx

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Common image file formats

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GIF, JPEG, JPG, PNG, TIFF

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HTML files

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Files that describe a webpage and are readable by a web browser.

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Common sound file formats

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MP3, OGG, WAV