Which of the following is a feature of a Proxy Server?

A proxy server primarily acts as an intermediary between a client seeking resources and the resource provider, often for various purposes. One of the key features of a proxy server is content filtering. This involves the capability to examine and control the content transmitted over the network, allowing organizations to enforce security policies and restrict access to undesirable websites or harmful content.

By filtering web content, a proxy server helps in protecting users from accessing specific types of sites that may be considered unsafe, such as those containing malware or inappropriate material. Additionally, content filtering can improve productivity by limiting access to non-work-related websites during business hours.

While the other options may seem relevant in some contexts, they do not describe features specific to a proxy server. Data backup generally pertains to ensuring copies of data for recovery purposes, database management relates to controlling structured data storage, and application hosting focuses on offering server space for running applications. None of these functionalities accurately describe the primary role of a proxy server in a network environment, which centers around content filtering and traffic management.