Which feature will cause the port to transition into a blocking state when BPDUs are no longer being received?

The feature responsible for causing a port to transition into a blocking state when Bridge Protocol Data Units (BPDUs) are no longer being received is known as loop protection. In a switched network, loop protection mechanisms are vital for ensuring that redundant paths do not create a loop that can lead to broadcast storms and other network issues.

When loop protection is enabled, it monitors the BPDUs received on the port. If the configured time period elapses without receiving any BPDUs, the port assumes that the network topology may have changed or that a loop is present. As a result, the port transitions to a blocking state to mitigate the risk of creating a loop. This action helps maintain network stability by preventing traffic from being forwarded onto a port that could potentially introduce a loop.

Other features mentioned, such as RSTP (Rapid Spanning Tree Protocol), BPDU protection, and root protection, serve different purposes in a switching environment. RSTP is designed to provide quicker convergence times compared to traditional STP by allowing ports to transition through roles more efficiently. BPDU protection is a mechanism used to protect against erroneous BPDUs that could come from misconfigured or malicious devices. Root protection, on the other hand, is aimed at preventing switches