Please answer it it's computer question
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A network consists of two or more computers that are linked in order to share resources (such as printers and CDs), exchange files, or allow electronic communications. The computers on a network may be linked through cables, telephone lines, radio waves, satellites, or infrared light beam
Advantages of computer networking
File sharing - you can easily share data between different users, or access it remotely if you keep it on other connected devices. Resource sharing - using network-connected peripheral devices like printers, scanners and copiers, or sharing software between multiple users, saves money.
In computing, a server is a piece of computer hardware or software (computer program) that provides functionality for other programs or devices, called "clients". ... Typical servers are database servers, file servers, mail servers, print servers, web servers, game servers, and application servers.
A school network is usually a LAN. LANs are often connected to WANs, for example a school network could be connected to the internet. WANs can be connected together using the internet, leased lines or satellite links
A modem modulates one or more carrier wave signals to encode digital information for transmission, and demodulates signals to decode the transmitted information. The goal is to produce a signal that can be transmitted easily and decoded reliably to reproduce the original digital data.