Quick Answer
The answer is that the administrator must commit the configuration. This is because Palo Alto firewalls operate with a two-phase configuration model: changes are first made to a candidate configuration, which remains inactive until explicitly committed to the running configuration. Without a commit, any modifications—such as a security policy update—stay pending and never affect live traffic, which is why the change does not take effect. On the PCNSA exam, this concept tests your understanding of the commit operation as a fundamental workflow step, often appearing in scenario-based questions where a candidate configuration is modified but not applied. A common trap is assuming changes are immediate, so remember the memory tip: “Candidate is just a draft; commit makes it craft.”
This PCNSA practice question tests your understanding of device management and services. This is a configuration task: choose the command set that satisfies every stated requirement. Small differences — like 'secret' vs 'password' or 'transport input ssh' vs 'all' — change whether the answer is correct. 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.
An administrator modifies a security policy but the change does not take effect. What must the administrator do?
Commit the configuration.
Changes must be committed to become active.
Import the configuration.
Why wrong: Importing configuration is not related to applying changes.
Save the configuration.
Why wrong: Saving stores the candidate config but does not activate it.
Reboot the firewall.
Why wrong: Rebooting does not apply uncommitted changes.
Answer choices
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
Commit the configuration.
In Palo Alto Networks firewalls, configuration changes are made in a candidate configuration that is not active until explicitly committed. The administrator must commit the configuration to apply the changes to the running configuration and enforce the new security policy. Without a commit, the modification remains pending and does not affect traffic.
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.
Commit the configuration.
Why this is correct
Changes must be committed to become active.
Related concept
Read the scenario before looking for a memorised answer.
Import the configuration.
Why it's wrong here
Importing configuration is not related to applying changes.
Save the configuration.
Why it's wrong here
Saving stores the candidate config but does not activate it.
Reboot the firewall.
Why it's wrong here
Rebooting does not apply uncommitted changes.
Common exam traps
Palo Alto Networks often tests the misconception that saving a configuration (e.g., via 'save config' or clicking Save) is sufficient to apply changes, but in Palo Alto firewalls, a commit is mandatory to move changes from candidate to active state.
Detailed technical explanation
Palo Alto firewalls use a two-phase configuration model: the candidate configuration (where changes are staged) and the running configuration (active in memory). The commit operation validates the candidate configuration for syntax and consistency, then atomically replaces the running configuration. This design prevents partial or invalid changes from disrupting traffic, and is similar to a 'commit' in network devices like Cisco IOS with 'commit' in candidate-based models.
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 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.
What to study next
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
Device Management and Services — study guide chapter
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FAQ
Device Management and Services — This question tests Device Management and Services — Read the scenario before looking for a memorised answer..
The correct answer is: Commit the configuration. — In Palo Alto Networks firewalls, configuration changes are made in a candidate configuration that is not active until explicitly committed. The administrator must commit the configuration to apply the changes to the running configuration and enforce the new security policy. Without a commit, the modification remains pending and does not affect traffic.
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 30, 2026
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.
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