How does the ping command work by default?
A. Is sends an ICMP Echo Request to a remote host and waits to receive an ICMP Echo Response in return.
B. It sends an ARP request to a remote host and waits to receive an ARP response in return.
C. It sends a TCP SYN packet to a remote host and waits to receive an TCP ACK response in return.
D. Is sends a broadcast packet to all hosts on the net and waits to receive, among others, a response from the target system.
E. It sends a UDP packet to port 0 of the remote host and waits to receive a UDP error response in return.
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Answer A.