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Policy Evaluation and Management →mediumMultiple SelectObjective-mapped

PCNSA Policy Evaluation and Management Practice Question

This PCNSA practice question tests your understanding of policy evaluation and management. The scenario asks you to isolate a root cause — eliminate options that address a different problem before choosing. After answering, compare your reasoning against the explanation and wrong-answer breakdown below. Once you have made your selection, read the full explanation to reinforce the concept and understand why each distractor is designed to mislead on exam day.

A security administrator notices that traffic from an internal user to a specific external web application is being blocked unexpectedly. The user's IP is 10.10.1.50 and the destination is 203.0.113.5 on port 443. The administrator has already verified that there is a security rule allowing the traffic. Which two logs should the administrator check first to diagnose the issue?

Clue words in this question

Noticing these words before you look at the options changes how you read each choice.

Clue: "first"
Why it matters: Order matters here. You are being tested on which action comes before the others — not which action is generally useful.

A
Check the Traffic log and the URL Filtering log.
Correct. The Traffic log shows session disposition (allow/deny) and the URL Filtering log shows if URL filtering blocked the traffic, which is a common secondary policy that can block traffic even when the security rule allows.
B
Check the Threat log for any intrusion prevention signatures that matched the traffic.
Correct. The Threat log records matches against intrusion prevention (IPS) signatures. If a threat signature matched and blocked the traffic, it would appear in this log, making it a primary log to check.
C
Check the System log for configuration changes that might have added a rule.
Why wrong: Incorrect. While the System log shows configuration changes, it is not the first place to check because the immediate cause is likely a filtering policy (URL filtering or threat prevention) rather than a new rule addition.
D
Check the HIP Match log to see if the user's device lacks required security software.
Why wrong: Incorrect. The HIP Match log relates to Host Information Profile (HIP) checks for GlobalProtect, which are less likely to be the cause of the specific traffic being blocked to an external web application on port 443.

Full breakdown with real-world context →

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

✓

Check the Traffic log and the URL Filtering log.

Option A is correct because even if a security rule explicitly allows traffic, secondary policies such as URL filtering can block the session. The Traffic log shows whether the session was allowed or denied, and the URL Filtering log reveals if the destination URL was blocked by a URL filtering profile. Option B is also correct because Intrusion Prevention System (IPS) / Threat Prevention signatures applied via a Security policy rule can block traffic that would otherwise be allowed. The Threat log records any such signature matches that resulted in blocking. Therefore, the administrator should check both the Traffic log and URL Filtering log (A) and the Threat log (B) first to diagnose the unexpected blocking.

Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.

Answer analysis

Option-by-option breakdown

For each option: why learners choose it and why it is or isn't the right answer here.

✓
Check the Traffic log and the URL Filtering log.
Why this is correct
Correct. The Traffic log shows session disposition (allow/deny) and the URL Filtering log shows if URL filtering blocked the traffic, which is a common secondary policy that can block traffic even when the security rule allows.
Clue confirmation
The clue word "first" in the question point toward this answer.
Related concept
Read the scenario before looking for a memorised answer.
✓
Check the Threat log for any intrusion prevention signatures that matched the traffic.
Why this is correct
Correct. The Threat log records matches against intrusion prevention (IPS) signatures. If a threat signature matched and blocked the traffic, it would appear in this log, making it a primary log to check.
Clue confirmation
The clue word "first" in the question point toward this answer.
Related concept
Read the scenario before looking for a memorised answer.
✗
Check the System log for configuration changes that might have added a rule.
Why it's wrong here
Incorrect. While the System log shows configuration changes, it is not the first place to check because the immediate cause is likely a filtering policy (URL filtering or threat prevention) rather than a new rule addition.
✗
Check the HIP Match log to see if the user's device lacks required security software.
Why it's wrong here
Incorrect. The HIP Match log relates to Host Information Profile (HIP) checks for GlobalProtect, which are less likely to be the cause of the specific traffic being blocked to an external web application on port 443.

Common exam traps

Common exam trap: answer the scenario, not the keyword

Palo Alto Networks often tests the misconception that a security rule allowing traffic guarantees the traffic will pass, but the trap here is that secondary policies like URL filtering profiles can override the security rule action, so candidates must check both the Traffic log and the URL Filtering log first.

Trap categories for this question

Command / output trap
Incorrect. While the System log shows configuration changes, it is not the first place to check because the immediate cause is likely a filtering policy (URL filtering or threat prevention) rather than a new rule addition.

Detailed technical explanation

How to think about this question

Under the hood, Palo Alto Networks firewalls evaluate traffic in a specific order: security rules first, then policy-based forwarding, then profiles (including URL filtering). Even if a security rule permits the traffic, a URL filtering profile attached to that rule can block the session based on the URL category (e.g., 'unknown' or 'high-risk'). The Traffic log records the final action (allow/deny/drop) and the URL Filtering log provides the reason for the block, such as 'URL category blocked'. In a real-world scenario, a user might be trying to access a legitimate web application that is miscategorized, causing the block despite the security rule being permissive.

KKey Concepts to Remember

Read the scenario before looking for a memorised answer.
Find the constraint that changes the correct option.
Eliminate answers that are true in general but not in this case.

TExam Day Tips

Watch for words such as best, first, most likely and least administrative effort.
Review why wrong options are wrong, not only why the correct option is correct.

Key takeaway

Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.

Real-world example

How this comes up in practice

A practitioner preparing for the PCNSA exam encounters this exact type of scenario on the job. The correct answer here is not the most general option — it is the best answer for the specific constraint described. Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option. Real exam questions reward reading the full scenario before eliminating options, because the constraint defines which answer fits.

Visual reference

What to study next

Got this wrong? Here's your next step.

Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.

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FAQ

Questions learners often ask

What does this PCNSA question test?

Policy Evaluation and Management — This question tests Policy Evaluation and Management — Read the scenario before looking for a memorised answer..

What is the correct answer to this question?

The correct answer is: Check the Traffic log and the URL Filtering log. — Option A is correct because even if a security rule explicitly allows traffic, secondary policies such as URL filtering can block the session. The Traffic log shows whether the session was allowed or denied, and the URL Filtering log reveals if the destination URL was blocked by a URL filtering profile. Option B is also correct because Intrusion Prevention System (IPS) / Threat Prevention signatures applied via a Security policy rule can block traffic that would otherwise be allowed. The Threat log records any such signature matches that resulted in blocking. Therefore, the administrator should check both the Traffic log and URL Filtering log (A) and the Threat log (B) first to diagnose the unexpected blocking.

What should I do if I get this PCNSA question wrong?

Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.

Are there clue words in this question I should notice?

Yes — watch for: "first". Order matters here. You are being tested on which action comes before the others — not which action is generally useful.

What is the key concept behind this question?

Read the scenario before looking for a memorised answer.

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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.