Which statements are true regarding ICMP packets?1. They acknowledge receipt of a TCP segment.2. They guarantee datagram delivery.3. They can provide hosts with information about network problems.4. They are encapsulated within IP datagrams.

• A. 3 and 4
• B. 2 and 3
• C. 2, 3 and 4
• D. 1 only

Answer: (A)