NSE4 High Availability and Diagnostics Practice Question
This NSE4 practice question tests your understanding of high availability and diagnostics. 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.
A company has two FortiGate units in an active-active HA cluster. They want to ensure that sessions initiated from the internet through a virtual IP are synchronized to the peer unit in case of failover. Which HA setting is required?
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Enable 'session-pickup' under config system ha
In active-active HA, session synchronization is enabled by default for TCP sessions, but for UDP and other protocols, session sync needs to be explicitly enabled. However, the question is about ensuring sessions are synchronized. The key setting is 'session-pickup' which enables session synchronization for all protocols. Also, for active-active, 'session-pickup-connectionless' should be enabled for UDP and ICMP. But the most direct answer is to enable session-pickup globally.
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.
✗
Enable 'set ha-mgmt-status enable' on the WAN interface
Why it's wrong here
This is for management, not session sync.
✗
Set 'set schedule' to 'round-robin' for the VIP
Why it's wrong here
There is no such setting for VIPs; round-robin is for load balancing, not session sync.
✗
Configure the same virtual IP on both units
Why it's wrong here
VIP configuration is shared via HA cluster database, but session sync is independent.
✓
Enable 'session-pickup' under config system ha
Why this is correct
Session pickup enables synchronization of all sessions, including those from VIPs, to the standby unit. Without it, sessions are not synced.
Related concept
Read the scenario before looking for a memorised answer.
Common exam traps
Common exam trap: answer the scenario, not the keyword
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
How to think about this question
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.
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.
Use explanations to understand the rule behind the answer.
TExam Day Tips
→Underline the problem statement mentally.
→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 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
Got this wrong? Here's your next step.
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.
High Availability and Diagnostics — This question tests High Availability and Diagnostics — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Enable 'session-pickup' under config system ha — In active-active HA, session synchronization is enabled by default for TCP sessions, but for UDP and other protocols, session sync needs to be explicitly enabled. However, the question is about ensuring sessions are synchronized. The key setting is 'session-pickup' which enables session synchronization for all protocols. Also, for active-active, 'session-pickup-connectionless' should be enabled for UDP and ICMP. But the most direct answer is to enable session-pickup globally.
What should I do if I get this NSE4 question wrong?
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.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
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Question Discussion
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