PRESENTATION ONCOMPUTER

NETWORKING

INDEX

Definition Need & advantages Types of network Basics of network architecture LAN Topologies Network models Network components

DEFINITION

A computer network is two or more computers connected together using a telecommunication system for the purpose of communicating and sharing resources.

A network of data processing nodes that are interconnected for the purpose of data communication.

A computer connected to a non-computing device may also represent a computer network.

Need of computer network:

Advantages of computer network

TYPES OF NETWORK :

LAN MAN WAN

LAN :

A network that is limited to a relatively small spatial area such as a room, a single building, a ship, or an aircraft. Local area networks are sometimes called a single location network.

MAN :

A network that connects two or more LANs together but does not extend beyond the boundaries of the immediate town, city, or metropolitan area. Multiple routers, switches & hubs are connected to create a MAN.

WAN :

A WAN is a data communications network that covers a relatively broad geographic area and that often uses transmission facilities provided by common carriers, such as telephone companies. WAN technologies generally function at the lower three layers of the OSI reference model: the physical layer, the data link layer, and the network layer.

Basics of network architecture :

Point to point Broadcasting Store and forward

Point to point

Broadcasting :

Store and forward

LAN Topologies

MESH Topology STAR Topology TREE Topology BUS Topology RING Topology

B

A B

E C

MESH TOPOLOGY