Client Server Computing | Loksewa CAAN 078

Q. Briefly describe the concept of Client-Server computing. (5marks)

answer:

Client-server model is a distributed application structure that partitions tasks or workloads between the providers of a resource or service, called servers, and service requesters, called clients

Examples of Client-Server Model are Email, World Wide Web, etc.

Architecture:

Characteristics:

• Client-server computing works with request and response systems. The client sends a request to the server and the server responds with the required information. 
• Clients and servers must follow a common communication protocol so that they can easily communicate with each other. All communication protocols are available at the application level.
•  An example of a client-server computer system is a web server. Returns a web page to the client that requested the web page.

Benefits:
• All the data you need is centralized in one place - the server. This makes it easier to secure data and provide authorization and authentication. 
• The server does not need to be physically close to the client. However, the data can be accessed efficiently. 
• Nodes in the client-server model are easy to replace, upgrade, or move because all nodes are independent and only request data from the server.
limitations:
• If all clients request data from the server at the same time, it can become overloaded and cause network congestion. 
• The cost of setting up and maintaining a client-server model is quite high.

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