Client-server networks
Unlike P2P networks, client-server networks have some form of hierarchy. The most common form of this is a domain model that utilizes some form of directory service, such as Microsoft's Active Directory, for authentication and control when it comes to accessing resources. In contrast to P2P networks, this provides centralized administration and is geared toward a network that contains servers and has skilled support staff, and more than 10 users/devices.
The following diagram shows a client-server model. If Amjid wants to log on to Computer A, his credentials are sent from Computer A to the domain controller that authenticated him and he is able to log on. Likewise, if he jumps over to Computer B, a similar process ...
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