Designing Cisco Enterprise Networks (ENSLD) — Question 42

Which method does Cisco SD-WAN use to avoid fragmentation issues?

Answer options

• A. PMTUD is used.
• B. Access circuits are configured with 1600 byte MTU settings.
• C. Jumbo frames are enabled.
• D. Traffic is marked with the DF bit set.

Correct answer: A

Explanation

The correct answer is A, as Path Maximum Transmission Unit Discovery (PMTUD) is specifically designed to discover the maximum packet size that can be transmitted without fragmentation. The other options, while related to network performance, do not directly address the fragmentation avoidance strategy as effectively as PMTUD does.