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PCNSA Practice Question: After upgrading the PAN-OS version on a firewall,…
After upgrading the PAN-OS version on a firewall, the administrator notices that the commit operation takes significantly longer than before. What is the most likely cause?
⚠ Common exam trap
The trap here is that candidates may attribute the slower commit to hardware limitations (Option A) or rulebase size (Option D), overlooking the fundamental difference between a full and partial commit triggered by a PAN-OS upgrade.
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
✓
The upgrade triggered a full commit of the entire configuration, which takes longer than a partial commit.
After a PAN-OS upgrade, the firewall performs a full commit of the entire configuration, which processes all configuration objects, rules, and policies from scratch. This is inherently slower than a partial commit, which only processes changed objects. The full commit is a standard post-upgrade behavior to ensure configuration consistency with the new code base.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
The firewall's CPU and memory are insufficient for the new PAN-OS version.
Why it's wrong here
The upgrade does not change hardware; if resources were insufficient, the firewall would have performance issues in general.
- ✓
The upgrade triggered a full commit of the entire configuration, which takes longer than a partial commit.
Why this is correct
After an upgrade, the system often performs a full commit to apply structural changes, which is slower.
- ✗
The firewall is performing a backup of the configuration.
Why it's wrong here
Backups are not part of the commit process.
- ✗
The rulebase has grown too large.
Why it's wrong here
That would have caused slow commits before the upgrade as well.
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JA
Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This PCNSA 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 PCNSA exam.