Which statement is NOT true regarding Internet Control Message Protocol (ICMP)?

A. ICMP can identify network problems.
B. ICMP is documented in RFC 792.

C. ICMP provides reliable transmission of data in an Internet Protocol (IP) environment.

D. An ICMP echo-request message is generated by the ping command.

Explanation:

ICMP does NOT provide reliable transmission of data in an Internet Protocol (IP) environment. The Transmission Control Protocol (TCP) is used to provide reliable transmission of data in an IP environment.

The following statements are TRUE regarding ICMP:

● ICMP can identify network problems.
● ICMP is documented in RFC 792.
● An ICMP echo-request message is generated by the ping command.
● An ICMP echo-reply message is an indicator that the destination node is reachable.
● ICMP is a network-layer protocol that uses message packets for error reporting and informational messages.

Objective:
Network Fundamentals
Sub-Objective:
Compare and contrast TCP and UDP protocols

References:
Cisco > Internetworking Technology Handbook > Internet Protocols (IP) > Internet Control Message Protocol (ICMP)