Which optional feature of an Ethernet switch disables a port on a point-to-point link if the port
does not receive traffic while Layer 1 status is up?
A.
BackboneFast
B.
UplinkFast
C.
Loop Guard
D.
UDLD aggressive mode
E.
Fast Link Pulse bursts
F.
Link Control Word
Explanation:
UDLD aggressive mode is disabled by default. Configure UDLD aggressive mode only on
point-to-point links between network devices that support UDLD aggressive mode. With
UDLD aggressive mode enabled, when a port on a bidirectional link that has a UDLD
neighbor relationship established stops receiving UDLD packets, UDLD tries to reestablish
the connection with the neighbor. After eight failed retries, the port is disabled.