Revision on Communication hardware

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Presentation transcript:

Revision on Communication hardware

Key words – Bandwidth. Ping. leased line. ADSL. VPN. Fibre optic – Lighter. 200 megabytes per second. Longer than copper. Can be bidirectional Copper – Twisted pair, most common communication thing. Unshielded is not protected against electromagnetic things. Network hardware – Modem, router (provides an internet connection) , server, client. WAP. Ethernet cable. Hub. Switch (switches between devices. Network topologies (bus, star, ring etc.) Wireless – Can be 400 megabytes per second. Use on home networks. Connects to router. Walls can cause interference. WiFi, Bluetooth, microwave, laser, 3g/4g, satellite, infrared (needs a line of sight, wont work well outdoors).