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PCNSA Practice Question: Ensure that all traffic from the internet to…
A company wants to ensure that all traffic from the internet to their internal web server is inspected for threats. Which configuration component is essential to achieve this?
⚠ Common exam trap
Many exam-takers confuse the necessity of NAT or SSL decryption as the primary component for threat inspection, overlooking that the security policy rule with a threat prevention profile is the actual enforcement point for inspecting traffic.
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
✓
A security policy rule that allows traffic from the internet zone to the DMZ zone and has a threat prevention profile attached.
A security policy rule that allows traffic from the internet zone to the DMZ zone with a threat prevention profile attached is the essential component to inspect all traffic from the internet to the internal web server for threats. The threat prevention profile enables the firewall to perform intrusion prevention system (IPS) and antivirus inspection on the allowed traffic, ensuring malicious content is blocked. Without this profile, traffic would be permitted but not inspected for threats, failing the requirement.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Destination NAT policy to translate the public IP to the internal server.
Why it's wrong here
NAT is needed for reachability but does not enable threat inspection.
- ✗
SSL decryption policy to decrypt traffic to the web server.
Why it's wrong here
Decryption is only needed if the traffic is encrypted, not for all traffic.
- ✓
A security policy rule that allows traffic from the internet zone to the DMZ zone and has a threat prevention profile attached.
Why this is correct
The security rule with a threat profile enables inspection of allowed traffic.
- ✗
A QoS policy to prioritize web traffic.
Why it's wrong here
QoS only manages bandwidth, not inspection.
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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.