Transcription of CHAPTER 1 : INTRODUCTION TO INTERNET
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BCA Sem. -1 | Networking & INTERNET Environment Prepared by : Nirzari Bhayani | Harivandana College, Rajkot CHAPTER 1 : INTRODUCTION TO INTERNET COMPUTER NETWORK A computer network is a group of computer systems and other computing hardware devices that are linked together through communication channels to facilitate communication and resource-sharing among a wide range of users. Networks are commonly categorized based on their characteristics. TYPE OF COMPUTER NETWORK LAN(Local Area Network) - A LAN connects network devices over a relatively short distance. A networked office building, school, or home usually contains a single LAN, though sometimes one building will contain a few small LANs (perhaps one per room), and occasionally a LAN will span a group of nearby buildings. In TCP/IP networking, a LAN is often but not always implemented as a single IP subnet.
in any cable or device breaks the loop and can take down the entire network. Star Topology - Many home networks use the star topology. A star network features a central connection point called a "hub node" that may be a network hub, switch or router. Devices typically connect to the hub with Unshielded Twisted Pair (UTP) Ethernet.
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