Which option lists the modes that are available for configuring UDLD on a Cisco switch?

Which option lists the modes that are available for configuring UDLD on a Cisco switch?
A . normal and aggressive
B . active and aggressive
C . normal and active
D . normal and passive
E . normal and standby

View Answer

Answer: A

Explanation:

The Cisco-proprietary UDLD protocol monitors the physical configuration of the links between devices and ports that support UDLD. UDLD detects the existence of unidirectional links. When a unidirectional link is detected, UDLD puts the affected port into the errdisabled state and alerts the user. UDLD can operate in either normal or aggressive mode.

Reference: http://www.cisco.com/en/US/docs/switches/lan/catalyst6500/ios/12.2SX/configuration/guide/udl d.html