NSE7 Troubleshooting and Diagnostics Practice Question
During a failover test in an active-passive HA cluster, the administrator notices that the secondary unit does not take over the primary role after a link failure on the primary. The 'get system ha status' shows both units in 'standalone' mode. What is the MOST likely cause?
⚠ Common exam trap
Many candidates confuse session pickup or override features with the fundamental requirement of a working heartbeat interface, assuming that failover is triggered by link failure detection on data ports rather than requiring a separate, dedicated heartbeat link.
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
The HA heartbeat interface is down or misconfigured on one unit
When both units show 'standalone' mode in 'get system ha status', it indicates that the HA cluster has lost communication between the primary and secondary units, causing them to operate independently. The most common cause is a failure or misconfiguration of the HA heartbeat interface, which is the dedicated link used for cluster synchronization and health monitoring. Without a functional heartbeat, the secondary cannot detect the primary's link failure and will not initiate a failover.
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 session pickup feature is disabled
Why it's wrong here
Session pickup only affects session syncing, not HA status.
- ✓
The HA heartbeat interface is down or misconfigured on one unit
Why this is correct
Heartbeat failure causes units to operate independently as standalone.
- ✗
The cluster is running in active-active mode
Why it's wrong here
Active-active would show both as active, not standalone.
- ✗
The HA override feature is disabled
Why it's wrong here
Override is for primary selection only; it doesn't cause standalone mode.
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JA
Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This NSE7 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 NSE7 exam.