CompTIA Network+ Practice Test 2026 - Free Network+ Practice Questions and Exam Prep Guide

A jump box, also known as a jump server or a bastion host, primarily functions as an intermediary that provides secure access to devices in a more secure network zone. This is particularly useful in environments where direct access to sensitive servers is not permitted for security reasons. By using a jump box, users can connect to the jump server and then gain access to secure network areas, while helping to mitigate the risks of unauthorized access.

This design enhances security by allowing restricted access, ensuring that traffic to and from sensitive areas is controlled and monitored. Users typically authenticate to the jump box before accessing other internal network resources, thus adding a layer of security.

While the other options may involve network functions, they do not accurately describe the main purpose of a jump box. It does not primarily provide access to public networks, direct traffic like a switch or router, or serve basic firewall capabilities on its own; rather, its primary role revolves around facilitating secure access to sensitive areas of a network.