Refer to the exhibit.
The exhibit shows configurations for interface 5 and VLAN 20. Note that DHCP snooping and ARP protection are also enabled.
A network administrator finds that interface 5 on an AOS-Switch is disabled. The administrator re-enables the interface, but it shuts down again. What should the administrator investigate?
The administrator should investigate a loop on the interface. The configuration exhibit includes the command 'loop-protect' on interface 5. If a loop is detected on the interface, the loop protection feature will disable the port to prevent network issues. This matches the behavior of the interface being repeatedly disabled even after re-enabling it.
C is correct, Rogue DHCP SERVER and unauthor ARP cannot shutdown port.
Correct, only with loop protection the port goes into err-disabled