Aurora Failover Answer – Marked Incorrect But Contradicts AWS Docs

[hazemusa]

Working through Aurora failover questions. Got this one marked wrong:

Question: A Forex trading platform uses Aurora for its database tier. In the event of system failure on the primary database instance, what happens to Aurora during the failover?

I selected: “Aurora flips the A record of your DB Instance to point at the healthy replica, which in turn is promoted to become the new primary.”

Marked incorrect. But this is what actually happens according to AWS docs – Aurora promotes an existing read replica and updates the DNS A record. Aurora doesn’t create new instances during failover.

The marked correct answer talks about creating a new instance in the same AZ, which doesn’t match Aurora’s architecture or documented behavior.

Can someone verify if this answer key is correct? Or if I’m missing something about how Aurora failover actually works?