What does a proxy server do?

A proxy server acts as an intermediary between a client and a server, making it a crucial component in network communication. When a client requests a resource, such as a web page, the request is sent to the proxy server rather than directly to the destination server. The proxy server processes this request and forwards it to the appropriate server. Once the response is received, the proxy server sends it back to the client.

This intermediary function offers several benefits, including enhanced security, as the proxy can hide the client's IP address from the server, and it allows for additional features such as content caching and filtering. For instance, by caching data, a proxy can improve load times for frequently accessed resources, thereby enhancing user experience indirectly through improved response times.

In contrast, options that suggest enhancing speed, increasing bandwidth, or providing direct access without filtering do not accurately describe the fundamental role of a proxy server. While a proxy can create the appearance of faster connections through caching, its primary function is still to serve as an intermediary in the network communication process.