PCNSA Device Management and Services Practice Question
Which of the following is NOT a valid method for upgrading PAN-OS software on a Palo Alto firewall?
⚠ Common exam trap
Many candidates assume FTP is a valid method because it is a common file transfer protocol, but Palo Alto Networks explicitly does not support FTP for PAN-OS upgrades, only HTTP/HTTPS-based downloads.
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
✓
Using an FTP server
PAN-OS software upgrades on Palo Alto firewalls are supported via the CLI, the Web GUI, and Panorama. FTP is not a supported method because the firewall's upgrade mechanism relies on HTTP/HTTPS for downloading images from the Palo Alto Networks update server or a local web server; FTP protocol is not implemented in the upgrade process.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
Using an FTP server
Why this is correct
PAN-OS upgrades are performed from the management plane using Panorama, the web interface, or SCP/HTTPS retrieval from the update server; FTP is not a supported transport. This makes FTP the invalid method the question asks for, since no upgrade path relies on it.
- ✗
Using the CLI
Why it's wrong here
CLI upgrades are fully supported via the request system software install command, so this is a valid method. It is tempting to flag because CLI feels less official than the GUI, but it is the standard approach for remote or scripted upgrades.
- ✗
Using the Web GUI
Why it's wrong here
The web GUI is a supported upgrade path through Device > Software, so it is valid. It is tempting to mark as invalid because GUI workflows can fail silently on low disk space, yet the method itself remains officially supported.
- ✗
Using Panorama
Why it's wrong here
Panorama does push PAN-OS images to managed firewalls, but it requires the target device to already be under management and licensed; it cannot upgrade a standalone firewall outside Panorama's device group. It is tempting because Panorama centrally manages software versions across large deployments.
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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.