Introduction of OSI Network Layer The network layer is the 3rd layer of the OSI model from the bottom side(Physical Layer). This layer lies in between the Data link layer and the Transport layer. Characteristics of OSI Network Layer The unit of data at the network layer is popularly called Data Read more…
Introduction This is the 2nd layer of the hierarchical OSI model. This layer lies in between the physical layer and the network layer. This is considered as the Lower layer of the OSI model. Features The Data Link Layer performs its functions in the LAN area mainly. The main network Read more…
Introduction The physical layer is the lowest layer/Layer 1 of the OSI model. Features The data units in this layer are called Signals(analog or digital) of Bits. The main network devices used/found in the Physical layer are a Repeater and Hub i.e., this layer does not work with devices having 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…