What is the effect of this configuration?

Refer to the exhibit.

What is the effect of this configuration?
A . The switch port interface trust state becomes untrusted
B . The switch port remains administratively down until the interface is connected to another switch
C . Dynamic ARP inspection is disabled because the ARP ACL is missing
D . The switch port remains down until it is configured to trust or untrust incoming packets

View Answer

Answer: A

Explanation:

Dynamic ARP inspection (DAI) is a security feature that validates ARP packets in a network. It intercepts, logs, and discards ARP packets with invalid IP-to-MAC address bindings. This capability protects the network from certain man-in-the-middle attacks. After enabling DAI, all ports become untrusted ports.