________ tell the attacker that a certain IP address has a live host or router.
A) ICMP Echo replies
B) ICMP error messages
C) Both A and B
D) Neither A nor B

Question

Quizplus · Accepted Answer

ICMP Echo replies are used by tools like ping to check if a host is reachable. ICMP error messages, such as destination unreachable, can also indicate the presence of a device at a specific IP address. Both can inadvertently reveal to an attacker that a certain IP address has a live host or router.

________ Tell the Attacker That a Certain IP Address Has