NetSec-Pro Connectivity And Security Practice Question
An administrator notices intermittent packet loss in a GlobalProtect deployment where users connect via IPv6. Which configuration change is likely to resolve the issue if MTU fragmentation is suspected?
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Decrease the MTU size on the tunnel interface.
Adjusting the MSS (Maximum Segment Size) or MTU on the tunnel interface helps avoid fragmentation issues caused by VPN headers, which are a common cause of packet loss in tunnels.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
Decrease the MTU size on the tunnel interface.
Why this is correct
Reducing MTU accounts for VPN overhead, preventing fragmentation.
- ✗
Increase the GlobalProtect timeout value.
Why it's wrong here
Timeouts address connection stability, not packet loss due to size.
- ✗
Disable hardware offloading for IPv6.
Why it's wrong here
Disabling offloading is usually for specific bug troubleshooting, not general MTU issues.
- ✗
Enable IPv6 transition mechanisms on the external interface.
Why it's wrong here
This does not address MTU fragmentation issues.
Visual reference
About these practice questions
Courseiva writes every NetSec-Pro question from scratch — 191 in total, each with an explanation and a wrong-answer breakdown. None are copied from real exams or dumps. Learn why practice questions differ from exam dumps →
JA
Written and reviewed by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
Last reviewed August 2026 · checked against the official Palo Alto Networks exam blueprint
This NetSec-Pro practice question is part of Courseiva's free Palo Alto Networks certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the NetSec-Pro exam.