CompTIA Network+ N10-006 Q797

A network administrator is configuring an ACL that blocks all ping traffic from leaving the local network on the router. Which of the following ACLs will work?

A. access-list 100 deny udp any any eq echo
B. access-list 100 deny ping any any echo
C. access-list 100 deny icmp any any echo
D. access-list 100 deny igmp any any echo

Correct Answer: C