PCNSA Device Management and Services Practice Question
A company uses Panorama to manage multiple firewalls. After pushing a template change, one firewall fails to commit with error 'invalid certificate path'. What is the most likely cause?
⚠ Common exam trap
Many exam-takers confuse certificate expiration (Option D) with a missing trusted root, but the specific error 'invalid certificate path' points to a chain validation issue, not a time-based expiry.
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 template includes a certificate that has no trusted root on that firewall
When a template push includes a certificate (e.g., for SSL decryption or authentication) that references a Certificate Authority (CA) not trusted by the target firewall, the commit fails with 'invalid certificate path'. The firewall cannot validate the certificate chain because the root or intermediate CA certificate is missing from its trusted store, causing the commit to abort.
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 management IP changed
Why it's wrong here
A changed management IP breaks Panorama-to-firewall connectivity, not certificate validation; the commit would fail with a connection or heartbeat error instead. It is tempting because connectivity faults commonly cause commit failures, and re-IP-ing a managed firewall would legitimately require updating Panorama's device registration.
- ✗
Template commit requires reconnection
Why it's wrong here
Template commits push configuration to managed firewalls over the existing Panorama management channel; they do not require re-establishing the connection first. The error names a certificate path, so the referenced certificate profile or path is invalid on that firewall. Reconnection would be relevant after a management-plane outage, not a configuration validation failure.
- ✓
The template includes a certificate that has no trusted root on that firewall
Why this is correct
Certificates referenced in a template must chain to a root the managed firewall trusts; if that root is absent from the firewall's trusted certificate store, the commit fails with an invalid certificate path error. The template pushed a certificate lacking a locally trusted root.
- ✗
The firewall's certificate has expired
Why it's wrong here
An expired certificate produces its own expiry error, not 'invalid certificate path'. The message indicates the configured path or certificate profile referenced in the template cannot be resolved on that firewall. Expiry would be the likely cause when the firewall reports a certificate validity or trust failure during commit.
- ✗
Panorama's certificate is mismatched
Why it's wrong here
Panorama's own certificate governs its web UI and logging connections, not the certificate path referenced in a pushed template, which points to a certificate stored on the managed firewall. It is tempting because Panorama does hold certificates, and replacing Panorama's certificate would be correct when its management interface certificate expires.
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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.