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Computer Network is a pivotal element of electronic commerce. The availability of the Internet fueled the growth of ecommerce for both consumer market and business market.

Networks can be categorized in Local area networks (LANs) and wide area networks (WANs). The Internet is the world's largest public WAN. Today's networks are built using standard hardware and software components. The communication over the networks are governed by various protocols. TCP/IP protocol is the foundation of all Internet applications, such as FTP, email and HTTP.

5 Layers of the Internet HTTP, TCP/IP and NAP)

Network Management Performance Management, Configuration Management, Accounting Management, Fault Management and security management

Classification of Computer network Computer networks can be categorized by range, functional relationship, network topology and specialized function.

Local area network (LAN) A local area network (LAN) is a computer network covering a local area, like a home, office or small group of buildings such as a college.

Wide area network (WAN) A wide area network or WAN is a computer network covering a wide geographical area.

Wireless LAN A wireless LAN or WLAN is a wireless local area network that uses radio waves as its carrier:

Ethernet - History and Basics Ethernet is a frame-based computer networking technology for local area networks (LANs).

Router - History, Functionality and Manufacturers A router is a computer networking device that forwards data packets toward their destinations through a process known as routing.

Integrated Services Digital Network (ISDN) - Consumer, Industry, Services and Configuration There are two points of view into the ISDN world.

Broadband Technology Cable Modem, DSL and Wireless Broadband

Digital Subscriber Line (DSL) - Equipment, Protocols, Configurations and Technologies Digital Subscriber Line, or DSL, refers to a family of technologies that provide a digital connection over the copper wires of the local telephone network.

Broadband Technology - Cable Modem A cable modem is a special type of modem that is designed to modulate a data signal over cable television infrastructure.


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