Computer networks enable all of us to speak in electronic format with people we all know and with strangers we do not. They enable workers to collaborate about documents in real-time with coworkers in another city, country, or prude. They allow schools to teleconference with students in Tokyo or Florida without spending massive levels of money about long-distance telephone calls. And they allow us to stream movies, play free online games, and use a variety of various other applications that would be impossible or impractical with a reduced amount of advanced technology.
Networks are built with two basic components: units or endpoints, and links that hook up them. Endpoints are typically computer systems, printers, and wireless routers. They communicate with each other through a pair of protocols, rules, and methods that specify how information is dispatched between them. Sites also use routing devices like switches and routers, which connect local or metropolitan sites to each other. They can also connect regional or national communications networks to global ones including the Internet.
When you wish to down load a file out of a network server, for example , your network device directs a supply of data for the network storage space, which a fantastic read then transfers it for the destination unit on a unique network portion or over the net. The speed at which this happens is based on the number of bandwidth that is available. Any time a network seems to have too much targeted traffic, then the bouts will be late until an empty link is normally free. That is why computer sites utilize masse balancers, firewalls, and other reliability solutions.
English 
Arabic