1.what is netork.?

A network is a collection of interconnected devices, such as computers, servers, routers, switches, and other hardware, that are linked together to facilitate communication and data sharing. It allows devices to exchange information and resources, such as files, documents, printers, and internet access. Networks can be local (LAN), covering a small area like a home or office, or wide (WAN), covering larger areas like cities or countries.