When the source host pings the destination device, if the network is working normally, the destination device will respond with an ICMP______ message to the source host after receiving the message.

When the source host pings the destination device, if the network is working normally, the destination device will respond with an ICMP______ message to the source host after receiving the message.
A . Echo Request
B . Echo Reply
C . TTL-Exceeded
D . Port-Unreachable

Answer: B