What does a Forwarding Profile PAC file specify?

The correct choice highlights that a Forwarding Profile PAC (Proxy Auto-Configuration) file specifies which HTTP proxy to use for specific URLs. This functionality is crucial for network administration, especially in environments where web traffic needs to be directed to different proxies based on the destination URL or the nature of the traffic. The PAC file contains JavaScript functions that the web browser evaluates to determine which proxy server to use for each request. This dynamic selection process facilitates efficient traffic management and ensures that the browsing experience is optimized, adhering to organizational policies for different types of web content.

In understanding the context of why this answer is accurate, it is important to consider how PAC files function in network configurations. They enable granular control over how traffic is routed, ensuring that requests to specific sites may go through a designated proxy while others may bypass proxy requirements altogether.

The other options address different functionalities that are unrelated to the core purpose of a PAC file. For instance, the session duration, application prioritization, or data transfer limits do not fall within the typical scope of what a PAC file is designed to accomplish, thus clarifying the specificity and role of the correct answer in network management.