Docker Certified Associate (DCA) — Question 4

Seven managers are in a swarm cluster.
Is this how should they be distributed across three datacenters or availability zones?
3-2-2

Answer options

• A. Yes
• B. No

Correct answer: A

Explanation

The 3-2-2 distribution ensures that there is a sufficient number of managers in each datacenter to maintain quorum and redundancy, which is critical for high availability. Option B is incorrect because a different distribution would not provide the same level of fault tolerance and could risk losing cluster functionality if one datacenter goes down.