Which of the following statements about gratuitous ARP packets are true? (Choose two)
Which of the following statements about gratuitous ARP packets are true? (Choose two)
A system can determine whether conflicting IP addresses are used by sending a gratuitous ARP packet, which helps to check for IP address conflicts. A gratuitous ARP packet uses the same format as an ARP reply packet, which is used to update other devices' ARP tables preemptively with the new mappings.
D answer is also correct: https://wiki.wireshark.org/Gratuitous_ARP