This NSE4 practice question tests your understanding of high availability and diagnostics. 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 is configuring a FortiGate HA cluster and wants to ensure that the primary unit is always preferred based on its configuration priority. Which setting should be enabled to allow the primary unit to resume its role after a failover if it regains connectivity?
Clue words in this question
Noticing these words before you look at the options changes how you read each choice.
Clue: "primary"
Why it matters: Asks for the main purpose or function, not a secondary benefit. Eliminate answers that describe side-effects or partial functions.
Clue: "always"
Why it matters: Absolute qualifier. An answer using 'always' is only correct if there are genuinely no exceptions — absolute statements are often wrong in networking.
set ha-inherit-priority enable
Why wrong: Not a valid HA setting.
set override enable
Override enables a higher-priority unit to reclaim the primary role.
set session-pickup enable
Why wrong: Session pickup syncs sessions but does not affect role assignment.
set ha-priority 255
Why wrong: Priority alone does not cause automatic reassignment; override must be enabled.
Answer choices
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
set override enable
Option C is correct. The HA override setting allows a higher-priority unit to take over the primary role when it rejoins the cluster after a failure, even if it was previously secondary.
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.
set ha-inherit-priority enable
Why it's wrong here
Not a valid HA setting.
set override enable
Why this is correct
Override enables a higher-priority unit to reclaim the primary role.
Clue confirmation
The clue words "primary", "always" in the question point toward this answer.
Related concept
Read the scenario before looking for a memorised answer.
set session-pickup enable
Why it's wrong here
Session pickup syncs sessions but does not affect role assignment.
set ha-priority 255
Why it's wrong here
Priority alone does not cause automatic reassignment; override must be enabled.
Common exam traps
Many certification questions include familiar terms but test a specific constraint. Read the exact wording before choosing an answer that is generally true but wrong for this case.
Detailed technical explanation
This question should be treated as a scenario, not a definition check. Identify the problem, the constraint and the best action. Then compare each option against those facts.
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 NSE4 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 NSE4 exam domain this question belongs to, then review the specific concept being tested. Practise related questions in that domain and focus on understanding why each wrong answer is tempting — not just why the correct answer is right.
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FAQ
High Availability and Diagnostics — This question tests High Availability and Diagnostics — Read the scenario before looking for a memorised answer..
The correct answer is: set override enable — Option C is correct. The HA override setting allows a higher-priority unit to take over the primary role when it rejoins the cluster after a failure, even if it was previously secondary.
Identify which NSE4 exam domain this question belongs to, then review the specific concept being tested. Practise related questions in that domain and focus on understanding why each wrong answer is tempting — not just why the correct answer is right.
Yes — watch for: "primary", "always". Asks for the main purpose or function, not a secondary benefit. Eliminate answers that describe side-effects or partial functions.
Read the scenario before looking for a memorised answer.
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Last reviewed: Jun 21, 2026
This NSE4 practice question is part of Courseiva's free Fortinet 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 NSE4 exam.
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