CompTIA Network+ N10-009 Practice Question

The correct answer emphasizes the strategic use of a screened subnet to host services that are intended for public access, such as a web server, thus isolating them from the internal network. This setup acts as a buffer zone, reducing the risk of external attacks directly impacting the core internal network. The incorrect options, although plausible in different contexts, fail to capture the primary security function of a screened subnet as an intermediary that shields internal networks from direct exposure to public internet traffic.