Website br Facebook br Twitter 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.