Centralized and Distributed Computer Network Model
In centralized computer network model, the network resources are placed and managed from a main location. Centralized network model allows administrators to manage the resource centrally.The network server and other critical networks resource are located in a central location
in a secure and dedicated server room.
Centralized networks model provides following advantages to network and system administrators.
Centralized network model provide Network and system administrators better access to network devices.
In centralized networks model provides can managed more easily.
Centralized network provides better networks security.
The main disadvantages is more work load of networks and system administrators and increased risk of communication failure due to a catastrophe in the center location.
In distribution network model, the network resources are placed and manged from different geographical location.Designated network and system administrators manged the network resources in different location. These days most of the enterprises network model are distributed.
PEER TO PEER NETWORKS
A peer to peer networks has no dedicated server. Here in peer to peer networks ,a numbers of workstation are connected together for the purpose of sharing devices, information or data. All the workstation are considered as equal. Any one computer can act as client act as or server at need for dedicated server,like
home networks ,small business networks, or retail shops. The microsoft term for peer to peer networks is “workshop”.
Normal workstation operating system are window 95/98 window ME, NT workstation , window 2000 professional , window XP , vista, window 7,window 8…..etc..
CLIENT SERVER NETWORK
PEER TO PEER networks are good for small business organization. For example :a small factory,service center,a small clinic.. etc.
* Everything is kept distributed in different computer.
* User generated files are stored in individual computers.Data backup is extremely difficult .
*Each computers has its own user database.
WHAT IS SERVER?
I f computer has a resource which is served to another computer,it is a server computer .
WHAT IS CLIENT?
A computer which is seeking any resource from another computers is a client computer.
Here,five type of server
(1) File server
(2) Print server
(3) Mail server
(4) Application server
(5) Database server