Network

Network:

In Computer world network plays an importunate role with out networking you would not

able to read this web page.Main work of network is to make computer connect to each

other and exchange data in the form of packets.

Network Topology:

Topology is the map which represent the connection among group of computers

in earlier days computers, network among them would be connected by following typologies.

Bus Topology:

Advantages:  

1) Easy to establish & make working

2) work good for small network

3) cost for establishing is less

Disadvantages:  

1) it is hard to troubleshoot the problem

2)Additional devices slows down the network

3)If main cable damages the complete network fails or split into two

Star Topology:

Advantages:

1)Easy to connect new nodes.

2)Monitoring network is easy

3)Fail user of any node in this topology does't effect other nodes

Disadvantages:

1) Too much dependency on central network device, if it fails whole network goes down

2) Using network devices will increase cost of network

3) adding new host to the network has limitation , its depends on network device

Mesh Topology
    

Advantages:

1)This Topology can handle high traffic, multiple transferd form different devices is posibble

2)if any node fails ther is no effect on the network

3)If There is any need of network changes, it can be done with out disrupting the netwok

Disadvantages:

1)Setting up this topolgy is very diffcult,

2)Cost of maintaining this topology is very costly

                         

Tree Topology:
         

Advantages:

1) adding or increasing the nodes is easy and can be done with out disturbing the network

2)the whole network is divided into segments, hence trouble shooting is easy

3)error detection is very easy

Disadvantages:

1)if the main cable brakes the complete network fails

2)As network grows, maintaing becoms diffcult

                                 

Hybrid Topology:

Advantages:                 

1) Its easy to increase the size of network by adding new components, without disturbing existing architecture.
2) Hybrid Network can be designed according to the requirements of the organization and by optimizing the available resources. Special care can be given to nodes where traffic is high as well as where chances of fault are high.

         
 Disadvantages:

1)Establishing this network is not easy, and designe is not easy

2)it requries many devices to connect among each other, and very costly

                         

Types of network:

LAN,WAN

These terms below will help you in understanding network.

Internet: it is a network of computers which communicate with each other from any part of the world .

Intranet: it is a small network of a group which communicate with each other where out side connection is not allowed