NSE 6 – FortiMail 5.3/5.4 — Question 10

Which firmware upgrade method for an active-passive HA cluster ensures service outage is minimal and there are no unnecessary failovers?

Answer options

• A. Upgrade the active unit, which will upgrade the standby unit automatically
• B. Upgrade both units at the same time
• C. Upgrade the standby unit, and then upgrade the active unit
• D. Break the cluster, upgrade the units independently, and then form the cluster again as quickly as possible

Correct answer: D

Explanation

Option D is correct because breaking the cluster and upgrading the units independently allows each unit to be updated without affecting the other, thus minimizing service outage. The other options either involve automatic upgrades that can lead to failovers or simultaneous upgrades that can cause service interruptions.