Wireless - A connection that transmits data via radio signals., Internet - A global network connecting millions of computers., Hardware - Computers, keyboards, printers and internet connection devices etc., Network - A group of interconnected computers., Output - Reproduces or displays the results after processing e.g. screen, printer., Hub - Devices plug into me and I pass messages to all devices., Switch - Devices plug into me and I pass messages to devices that need them., Bridge - Device that can connect two networks together., Firewall - A blockade that controls communications to and from your computer., Hacker - Someone who gains unauthorised access to your device and data.,

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