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what is intermediary device
A
Local Area Network (LAN) allows two or more computers to access the internet through a single router and, by creating a shared folder/directory, to share data between any computer connected to the LAN.
A network is any collection of independent computers that communicate with one another over a shared network medium. A computer network is a collection of two or more connected computers 1) LAN (Local Area Network) 2) WAN (Wide Area Network) 3) MAN (Metropolitan Area Network) 4) VPN (Virtual Private Network) 5) Internet 6) Intranet
For a small LAN network, a switch is best. To connect two or more LAN networks, a router is required. (2) From Jean Andrews CompTIA A+ sixth edition (page #852): You can use a crossover cable to connect to computers without a switch or hub making it the simplest network of all. For two or more you will need a switch, hub, or router.