A network designer is redesigning an enterprise campus network to ensure that Ethernet switches proactively
attempt to reconnect after a fiber cut. In the design, they will have to address areas where fiber cuts exist on
campus from past troubleshooting, where a single fiber is disconnected in the fiber pair, leading tolooping.
Which feature could be implemented in the design to allow the Spanning Tree Protocol on the switchesto be
protected?
4

A. loop guard
B. UniDirectional Link Detection
C. UniDirectional Link Detection aggressive mode
D. root guard

Answer: C

Explanation: