Which two to deploy UDLD on a switch are true? (Choose two)

Which two to deploy UDLD on a switch are true? (Choose two)
A . It can interact with Layer 1 mechanisms to monitor the status of physical links
B . It can interact with Layer 2 mechanisms to monitor the status of physical links
C . It can replace Cisco Discovery Protocol
D . It can replace spanning tree
E . It can prevent forwarding loops that result from unidirectional links

View Answer

Answer: AE