Which of the following protocols would be used to test if one host is reachable by another host, by sending echo requests and waiting for echo replies?
A. SNMP
B. ICMP
C. TCP
D. UDP
Answer:B
Which of the following protocols would be used to test if one host is reachable by another host, by sending echo requests and waiting for echo replies?
A. SNMP B. ICMP C. TCP D. UDP