This PCNSE practice question tests your understanding of core concepts and architecture. Read the scenario carefully and evaluate each option against the stated constraints before committing to an answer. 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.
Which two are valid methods for collecting User-ID information on a Palo Alto Networks firewall? (Choose two.)
Syslog parsing
Why wrong: Syslog parsing is not a native User-ID method; it requires a special integration.
Email gateway
Why wrong: Email gateway is not a User-ID collection method.
Active Directory agent
The AD agent polls domain controllers for user logon events.
SNMP trap
Why wrong: SNMP traps are not used for User-ID.
Captive portal
Captive portal authenticates users and maps them to IP addresses.
Answer choices
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
Active Directory agent
Option C is correct because the Active Directory agent is a dedicated software component that integrates with Microsoft Active Directory to map user logon events to IP addresses, providing real-time User-ID information to the firewall. Option E is correct because Captive Portal actively authenticates users via browser-based or agent-based authentication, associating their IP address with a username upon successful login, which is a direct method for collecting User-ID data.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Answer analysis
For each option: why learners choose it and why it is or isn't the right answer here.
Syslog parsing
Why it's wrong here
Syslog parsing is not a native User-ID method; it requires a special integration.
Email gateway
Why it's wrong here
Email gateway is not a User-ID collection method.
Active Directory agent
Why this is correct
The AD agent polls domain controllers for user logon events.
Related concept
Read the scenario before looking for a memorised answer.
SNMP trap
Why it's wrong here
SNMP traps are not used for User-ID.
Captive portal
Why this is correct
Captive portal authenticates users and maps them to IP addresses.
Related concept
Read the scenario before looking for a memorised answer.
Common exam traps
The trap here is that candidates often confuse Syslog parsing or SNMP traps as valid User-ID sources because they are common in other security contexts, but Palo Alto Networks specifically requires authentication-based methods like AD agent, Captive Portal, or XFF headers for User-ID collection.
Detailed technical explanation
The Active Directory agent uses the NetAPI or LDAP to query domain controllers for security event logs (Event ID 4624 for logon), mapping the user's SAM account name to the source IP address of the logon session. Captive Portal intercepts HTTP/HTTPS traffic and presents a login page, after which the firewall creates a user-to-IP mapping in the User-ID table, which can be distributed to other firewalls via User-ID redistribution. A subtle behavior is that the Active Directory agent requires the firewall to have network access to the domain controllers and must be configured with the correct domain credentials to read security logs.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
A practitioner preparing for the PCNSE 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.
What to study next
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FAQ
Core Concepts and Architecture — This question tests Core Concepts and Architecture — Read the scenario before looking for a memorised answer..
The correct answer is: Active Directory agent — Option C is correct because the Active Directory agent is a dedicated software component that integrates with Microsoft Active Directory to map user logon events to IP addresses, providing real-time User-ID information to the firewall. Option E is correct because Captive Portal actively authenticates users via browser-based or agent-based authentication, associating their IP address with a username upon successful login, which is a direct method for collecting User-ID data.
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
Read the scenario before looking for a memorised answer.
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Last reviewed: Jun 25, 2026
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.
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