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Answer:
1) A computer network is a group of computers that use a set of common communication protocols over digital interconnections for the purpose of sharing resources located on or provided by the network nodes. ... They are identified by hostnames and network addresses.
2) A switch is a device that allows multiple wired network devices or endpoints to be connect to a common network. It is the s. Strictly speaking, a NIC (Network Interface Card) is a generic term to describe any card adapter that can be inserted or plugged into a device
3) wifi and hotspot
4)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. ... Two very common types of networks include: Local Area Network (LAN) Wide Area Network (WAN)