List of some Common Internet and Web Applications or Services Gopher Gopher system was released in mid-1991 by Mark P. McCahill team in USA. The name was coined by Anklesaria due to several meanings of the word “gopher” i.e. a gofer is an assistant who “goes for” things, and a gopher a North Read more…
Introduction The Central Processing Unit (CPU) is like the Brain of the computer. This is because it takes all major decisions, makes all sorts of calculations, and directs different parts of the computer functions by activating and controlling the operations. The task of performing operations like arithmetic, logical, and non-logical/arithmetic Read more…
Node A node is a component or terminal connected to a network. Components like laptops, PDAs(personal digital assistants – a variety of handheld mobile devices), Internet-enabled mobiles, network connecting devices, etc., can be considered as nodes in a computer network. Client Link for Client details Server Link for Server details Read more…
Introduction A typical computer network either LAN or WAN is consist of a large number of the communication devices along with communication medium or channels. To build a typical LAN especially, we need to have computers, communication mediums or channels, NOS(Network Operating System) and networking devices such as Hubs, Switches, Read more…
Introduction A switch is used to connect the incoming link to the desired outgoing link and directs theincoming message to the appropriate outgoing link. A communication switch is used to allow/stop the flow of messages through the path connecting the receiver and the transmitter. The switching is the manipulation of Read more…
Introduction of Networking Model Most of the computer networks today are organized as a series of layers arranged as a stack one upon another. The layering of network model is done in order to divide the workload or division of labour and also to simplify the system design. The functionality Read more…
Introduction This is also called LAN topology because of these are mostly and mainly implemented in a LAN network. Definition Network topology is the study of geometric or graphical arrangement or mapping or layout of the network elements (may be devices, links, nodes etc.) in a computer network along with Read more…
Types of Computer Network On the basis of network size or structure and the area they are localised in computer networks are classified into three types : – (1.) Local Area Network(LAN) (2.) Metropolitan Area Network(MAN) (3.) Wide Area Network(WAN) (1.) Local Area Network(LAN) Definition LAN is a type of Read more…
Transmission/Communication Medium or Channel: The transmission medium is the physical path/connection between transmitting and receiving devices in a data transmission system. Transmission media is one of the major components of a communication system. The characteristics and quality of a data transmission are determined both by the characteristics of the medium Read more…
History The concept of Multiplexing originated in telegraphy in the 1870s, and is now widely applied in different streams of communications. Introduction The transmission of data over a network, either in wireless or wired medium, requires to solve the problem of being able to send a large amount of data Read more…