PCNSE Deploy and Configure Firewalls Practice Question
This PCNSE practice question tests your understanding of deploy and configure firewalls. 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 company uses User-ID to map users to IPs. Some users report that their traffic is being blocked even though they are in the correct user group for access. The security policy uses user-based conditions. What is a likely cause?
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
The user's IP is not in the User-ID mapping table
When a security policy uses user-based conditions, the firewall must have a valid User-ID mapping for the user's IP address to enforce the rule. If the user's IP is not in the User-ID mapping table, the firewall cannot associate the traffic with a user group, and it will either match a default deny rule or fail to match the intended allow rule, resulting in blocked traffic. This is the most direct cause given that the user group assignment is correct but the mapping is missing.
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.
✗
The security policy order is incorrect
Why it's wrong here
This could affect multiple users, but it is less specific to a single user's issue.
✗
The firewall is not configured to use the User-ID agent
Why it's wrong here
This would affect all users, not just specific ones.
✗
The User-ID agent is not running
Why it's wrong here
If the agent is not running, all users would be affected.
✓
The user's IP is not in the User-ID mapping table
Why this is correct
Without a mapping, the policy cannot match the user, so traffic may be blocked by a default deny rule.
Related concept
Read the scenario before looking for a memorised answer.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates often assume the issue is with the User-ID agent's configuration or status, but the question specifies that some users are affected, pointing to a per-user mapping gap rather than a global agent failure.
Detailed technical explanation
How to think about this question
User-ID mapping is stored in the firewall's user-to-IP cache, populated via agents using protocols like WMI, LDAP, or syslog. The firewall checks this cache at the time of session setup; if the IP is absent, the user is treated as 'unknown' and will not match any user-based security rules. A common real-world scenario is when a user's IP changes due to DHCP lease renewal, but the User-ID agent has not yet updated the mapping, causing intermittent blocks.
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 security administrator must allow nursing staff to reach a patient records server while blocking access from the guest Wi-Fi VLAN. After applying an extended ACL, traffic is still blocked from nursing workstations. The ACL was applied outbound instead of inbound on the wrong interface. Questions like this test ACL direction and placement rules.
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.
Deploy and Configure Firewalls — This question tests Deploy and Configure Firewalls — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: The user's IP is not in the User-ID mapping table — When a security policy uses user-based conditions, the firewall must have a valid User-ID mapping for the user's IP address to enforce the rule. If the user's IP is not in the User-ID mapping table, the firewall cannot associate the traffic with a user group, and it will either match a default deny rule or fail to match the intended allow rule, resulting in blocked traffic. This is the most direct cause given that the user group assignment is correct but the mapping is missing.
What should I do if I get this PCNSE question wrong?
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
About these practice questions
Courseiva creates original exam-style practice questions with explanations and wrong-answer analysis. It does not publish real exam questions, exam dumps, or protected exam content. Learn why practice questions differ from exam dumps →
Share a tip, memory trick, or ask about the reasoning behind this question. Do not post real exam questions, leaked content, braindumps, or copyrighted exam material. Comments are moderated and may be removed without notice.
This PCNSE 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 PCNSE exam.
Question Discussion
Share a tip, memory trick, or ask about the reasoning behind this question. Do not post real exam questions, leaked content, braindumps, or copyrighted exam material. Comments are moderated and may be removed without notice.
Sign in to join the discussion.