AWS Certified Database – Specialty — Question 125

A database specialist deployed an Amazon RDS DB instance in Dev-VPC1 used by their development team. Dev-VPC1 has a peering connection with Dev-VPC2 that belongs to a different development team in the same department. The networking team confirmed that the routing between VPCs is correct; however, the database engineers in Dev-VPC2 are getting a timeout connections error when trying to connect to the database in Dev-VPC1.
What is likely causing the timeouts?

Answer options

• A. The database is deployed in a VPC that is in a different Region.
• B. The database is deployed in a VPC that is in a different Availability Zone.
• C. The database is deployed with misconfigured security groups.
• D. The database is deployed with the wrong client connect timeout configuration.

Correct answer: C

Explanation

The correct answer is C because misconfigured security groups can block the necessary inbound traffic that allows connections to the database. Options A and B are incorrect, as both VPCs can reside in the same Region and Availability Zone, respectively, and still have connectivity. Option D is also incorrect because the client connect timeout is not related to network security configurations.