What is the primary function of a proxy server?

The primary function of a proxy server is to act as an intermediary for requests from clients. When a client sends a request to access a resource, the request goes to the proxy server first. The proxy server then evaluates the request and forwards it to the appropriate server. This function allows for a range of benefits, such as improved security, management of internet traffic, and the ability to cache frequently accessed resources, which can enhance performance and reduce latency.

By serving as an intermediary, proxy servers can also provide anonymity and filtering, allowing organizations to control internet access and protect sensitive data. Using a proxy server can optimize network performance by caching responses from the destination servers, which reduces the amount of data that needs to be transmitted over the network.

Other options, such as increasing network bandwidth, creating backups, or providing storage space for applications, do not accurately describe the role of a proxy server. Bandwidth management refers to optimizing the amount of data that flows through the network, while backups relate to data protection practices. Similarly, providing storage space for applications is a function more associated with servers and storage solutions rather than the intermediary role fulfilled by a proxy server.