in other ways intentionally breaches computer security. Points to Remember: • A computer network is an interconnection of various computers • ARPANET was established by the Advanced Research Projects Agency (ARPA) in • World Wide Web was created by Timothy Berners Lee in at CERN in Geneva. • Web page is a document available on World Wide Web • Web Browser is an application software that allows us to view and explore information on the web • Web server is a computer where the web content is stored. Basically web server is used to host the web sites • Internet is a world-wide global system of interconnected computer networks.
• Network Topology is the schematic description of a network arrangement, connecting various nodes (sender and receiver) through lines of connection. • A personal area network, or PAN, is a computer network that enables communication between computer devices • A Local Area Network is a privately owned computer network covering a small Networks geographical area, like a home, office, or groups of buildings e.g. a school Network • MANs are usually owned by large organizations to interconnect its various branches across a city. • Computers connected to a Wide Area Networks are often connected through public networks • A fibre-optic cable is made of glass or plastic and transmits signals in the form of light.
• The term wireless refers to the communication or transmission of information over a distance without requiring wires, cables or any other electrical conductors. • Bluetooth is used to connect different electronic devices wirelessly to a system for transferring and sharing data. • Infrared technology is a type of wireless communication technology to transfer data between two infrared enabled devices through infrared radiation. • A WiFi setup consists of a wireless router which serves a communication hub, linking portable device with an internet connection.
• Hub is a common connection point for devices in a network. • A switch is a hardware device that filters and forwards network packets. • Repeaters remove the unwanted noise in an incoming signal. • Gateways serve as