The correct answer is
A. client.
Explanation of the Correct Answer
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Definition of a Client: In networking terminology, a client is a computer or software application that requests services or resources from another computer, known as a server. The client initiates communication and relies on the server to provide the requested data or service.
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Client-Server Model: The client-server model is a fundamental architecture in computer networking. In this model:
- The client sends requests to the server.
- The server processes these requests and sends back the appropriate responses or data.
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This model is widely used in various applications, such as web browsing, email, and file sharing.
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Examples of Clients: Common examples of clients include:
- Web browsers (like Chrome or Firefox) that request web pages from web servers.
- Email clients (like Outlook or Thunderbird) that retrieve emails from mail servers.
- Applications that connect to databases to fetch or manipulate data.
Why the Other Options are Incorrect
- B. Host:
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A host refers to any computer or device that is connected to a network and can communicate with other devices. While a client is a type of host, not all hosts are clients. A host can also be a server, which provides services to clients. Therefore, this option is too broad and does not specifically refer to the role of requesting services.
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C. Master:
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The term "master" is often used in specific contexts, such as in master-slave configurations in databases or certain protocols. In these cases, the master device controls one or more slave devices. However, this term does not apply to the general concept of a computer requesting services on a network. Thus, it is not relevant in this context.
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D. Server:
- A server is the opposite of a client. It is a computer or application that provides services, resources, or data to clients. Since the question specifically asks for the computer that requests services, this option is incorrect.
Summary of Key Points
- A client is a computer or application that requests services from a server in a network.
- The client-server model is a fundamental architecture where clients request and servers provide services.
- Other options like host, master, and server do not accurately describe a computer that requests services.
Revision Summary
- A client requests services from a server in a network.
- The client-server model is essential for understanding network interactions.
- Hosts can be clients or servers, but the term is broader.
- Master/slave terminology is context-specific and not applicable here.