internet infrastructure/hardware

Server

• A computer or program which runs purely to serve the needs of other computers. It runs special
• server software to service the requirements of the users (clients). There are several types of servers,
• including file servers and printer servers on a local area network (LAN), and web and email servers
• that manage communication with the internet.
• https://www.youtube.com/watch?v=TR1PHps6R8I (Embed)

Client

• A computer which uses the services provided by the server.
• https://www.youtube.com/watch?v=SwLdKeC8scE (Embed)

Router

• A piece of hardware that connects two or more networks. In relation to the internet, data from
• the ISP is sent into the network and the router then directs the data packets to the correct
• destinations. The router also handles data travelling in the other direction. Routers can be
• described as ‘directors of traffic’ for the networks.
• https://www.youtube.com/watch?v=ELCPzcOTkYg (Embed)

Backbone

• https://www.youtube.com/watch?v=wU4VJ-uaLZI (Embed)
• The main connecting data routes between large networks on the internet and smaller networks in local regions.