Hubs and switches, They look similar but they handle signals differently, Local Area Network (LAN), Easy to setup, inexpensive and it is limited to a small geographical area., Wireless Local Area Network (WLAN), It works without cables so is useful where computers and devices are moved around quite often. Slower than a LAN., Wide Area Network, It is not limited to any geographical area., Network Hardware Devices, Include hubs, bridges, switches and routers., Networks, They are valuable because they allow hardware like printers to be shared, as well as sharing of software and of files., Browsers, Email Software and ISP, They make communication over the internet possible., WiFi and Bluetooth, They are wireless forms of communication on a network., Fax, Email and Video-Conferencing, They are methods of communication, Intranets, They are set up by organisations and access to them is strictly controlled., IDs, Passwords and Authentication Techniques, They are used to identify users to networks., Passwords, Firewalls and Encryption Techniques, Used to protect data..

(Lesson) Computer Network Summary

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