Website http://academy-khi.com/ <br />Facebook https://www.facebook.com/academykhi/ <br />Twitter https://twitter.com/academy_khi <br /> <br />Network Components <br />Network components are essential blocks of network infrastructure. In this video, we will cover following topics. <br /> <br />Data <br />Node <br />Client <br />Server <br />Peer <br />Network Adapter <br />Hub <br />Switch <br />Router <br />Protocol <br />Data rate <br />Bandwidth <br />Network <br />Internet <br />Intranet <br />Extranet <br />Firewall <br />VPN <br /> <br /> <br /> <br /> <br />Data <br /> <br />It is the information stored and processed by a computer. <br /> <br />Node <br /> <br />Every device on a network which has a unique logical address or IP. <br /> <br />Client <br /> <br />A client is a node which takes services from another node. <br /> <br />Server <br /> <br />A server is a node which provides its services to another node. <br /> <br />Peer to Peer Network. <br /> <br />A peer is a computer which has equal rights. No need of a server. It promotes peer to peer network <br /> <br />Network Adapter or NIC <br /> <br />NIC Network interface card enables the computer to send or receive data to or from the network. It may be wireless or wire. <br /> <br />HUB. <br /> <br />It is a central device to connect computers. It is a layer one device (OSI Layer). It broadcast data to all connected nodes. <br /> <br />Switch. <br /> <br />It is layer two device. More intelligent than a HUB. <br /> <br />Router. <br /> <br />It is layer three device. It connects the network. <br /> <br />Protocol. <br /> <br />Here we consider internet protocol. Use to communicate on the internet. <br />IPZ <br />SPX <br />NetBEUI <br />Appletalk <br />Kermit <br />UUCP <br />NetWare <br />IPv4 <br />IPv6 <br /> <br />Data rate. <br /> <br />It is the measurement of data transfer in a second. Units are bps, Kbps, Mbps, Gbps. <br /> <br />Bandwidth. <br /> <br />It is the maximum rate of data transfer. Units are bps, Kbps, Mbps, Gbps. <br /> <br />Network. <br /> <br />When two or more computers are connected in the limited geographical area. The basic purpose is to share their resources and information. <br /> <br />Internet. <br /> <br />It is a network of Networks. It is not managed by a single organization. <br /> <br />Intranet. <br /> <br />It is a private computer network or a website which is mainly designed for selected employee or individuals. An authentication is required to access the resources. It is a part of the internet. <br /> <br />Extranet. <br /> <br />It is also a part of the internet. It is an extension of intranet using world wide web. <br /> <br />Firewall. <br /> <br />It is a setup (Software or Hardware) designed to protect your computer.(Stop unauthorized access). <br /> <br />VPN Virtual Private Network. <br /> <br />It is use to connect an external host to a corporate internal network.
