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What Is A Network And Why Do We Care?

692 words - 3 pages

What is a network & why do we care? Any time you have two or more computers connected together, you have a local area network (LAN). A network allows the computers to share files, printers, scanners, and even an Internet connection. Why do we care? Save Money. By sharing a single Internet connection with every computer on the network, you can reduce your Internet access costs. Save Space. Networked computers can all share the same printer and scanner, freeing up desk and shelf space. Work Anywhere. Wireless Networks let laptop users work anywhere in the house or office. Just turn it on and you're online. Share Media. Swap your favorite pictures, music, and movies with other computers on ...view middle of the document...

It typically connects workstations, personal computers, printers, servers, and other devices. LANs offer computer users many advantages, including shared access to devices and applications, file exchange between connected users, and communication between users via electronic mail and other applications. TCP/IP vs. OSI Open System Interconnection, an ISO standard for worldwide communications that defines a networking framework for implementing protocols in seven layers. Control is passed from one layer to the next, starting at the application layer in one station, and proceeding to the bottom layer, over the channel to the next station and back up the hierarchy. Overview TCP/IP: Transmission Control Protocol/Internet Protocol, the suite of communications protocols used to connect hosts on the Internet. TCP/IP uses several protocols, the two main ones being TCP and IP. TCP/IP is built into the UNIX operating system and is used by the Internet, making it the de facto standard for transmitting data over networks. IP - Internet Protocol. IP specifies the format of packets, also called datagrams, and the addressing scheme. Most networks combine IP with a higher-level protocol called Transmission Control Protocol (TCP),...

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