Huawei Certified Network Associate – Routing and Switching (HCNA-RS, legacy) — Question 125

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

Correct answer: C

Explanation

The correct answer is C because the TTL (Time to Live) field is designed to prevent packets from circulating indefinitely by decrementing the value by 1 each time the packet is routed. Options A and B are incorrect as they misinterpret the purpose of TTL, and option D is wrong because the TTL does not increment; it decreases.