Huawei Certified ICT Associate – Data Center Network (HCIA-DCN) — Question 76

Which of the following descriptions regarding the TTL field of the IP packet is correct?

Answer options

• A. The TTL defines how many packets the source can send.
• B. The TTL value will increment by 1 each time the packet is routed.
• C. The TTL defines the duration during which the source can send packets.
• D. The TTL value will decrement by 1 each time the packet is routed.

Correct answer: D

Explanation

The correct answer is D because the TTL (Time To Live) value is designed to prevent packets from circulating indefinitely in the network; it decreases by 1 with each hop. Options A, B, and C are incorrect as they misinterpret the function of the TTL field; it does not control the number of packets sent or define a duration for sending packets.