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What is Client-Server Architecture in Computer Network?
In this architecture, a specific computer is known as a server, specially designated to provide various services to other computers known as clients. In simple terms, the server can be defined as a provider of services, and the client can be a requester to services. The client requests any information from the server, and the server, in turn, responds to the client request, as shown in the below figure −
The most common client-server arrangement method is a LAN made out of microcomputers linked to a network server, which serves all LAN clients.
Classifications of Client/Server Architecture
Following is the classification of Client/Server Architecture −
Two Tier-Architecture
In the two-tier architecture, there exists only two parties; one is the client, and the other is the server. The main benefit of the client/server model is its simplicity. But there is a major problem when 100s of clients request the data from the server simultaneously. Every client will have to wait for its turn to come.
Three-Tier Architecture
It is also referred to as multi-tier architecture. In this architecture, there is a middle layer within the client and the server. It clarifies the difficulty of waiting time by clients. It maintains a queue of requests by different clients, and the client can do their work; meanwhile, the server is busy processing other client’s request. The middle layer forwards the request, and the server, in turn, replies to the client.
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