Describe Different Network Models

A network model represents the architecture of computer network. The most popular network models are described below.

1- Client-Server Model
    A network architecture in which many clients request and receive services from a server is called client-server model.

The server is a dedicated powerful computer. It controls the whole network and provides a centralized storage area for data and software. It also processes the requests received from clients and manages other resources in the network. The resources may include printers and scanners.

All computers (other than computer server) connected in the network are called clients. A client provides interface the user. The user sends request to the server. Server receives the request from client computer and takes proper action on it. The result of request is sent to the client.

Client server network may consist of two or more servers. Some servers on a network perform only one specific task. These servers are called dedicated servers. For example, a file server stores and manages files. A database server stores and manages databases. It also provides access to databases. Similarly, a print server manages printers and print jobs.
The client/server network has the following advantages:
  • It reduces the volume of data traffic on the network.
  • It provides faster responses to the client.
  • It allows using less expensive computers as clients because most of the work is done by server.
The main disadvantages of this network are as follows:
  • The servers are costly.
  • The entire network is affected if there is any problem in the server computer.
2- Peer-to-Peer Model
    A network architecture in which all computers on the network have equal status and no one has control over others in called peer-to-peer model.

In peer-to-peer network there is no central computer to control other computers on the network. Each computer can share data and devices (or resources) of other computers in the network. For example, a printer attached with any computer can be used by all computers connected in the network. Each computer stores its own data and program files.
The main advantages of peer-to-peer model are as follows:
  • It is useful in small offices.
  • It is easy to design and to maintain.
  • It does not require any powerful computer.
The main disadvantages of peer-to-peer model are:
  • It becomes slow under heavy use.
  • There is no central place for storing data and software.
  • It does not provide the security to protect the data stored on computers connected in the network.
3- Hybrid Network Model
    The hybrid network has combined features of both client/server and peer-to-peer network models. It also has one or more servers. The users can share the data and software. Similarly, each node can store its own data files and programs.

6 Responses to “Describe Different Network Models”

Anonymous said...
25 May 2013 at 22:50


Solulele Booi said...
18 September 2013 at 08:17

Steps I can take to minimise traffic requirements during user login in two locations network

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Cindy Dy said...
20 August 2014 at 00:49

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