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DBS-C01 · Question #244

A company has a quarterly customer survey. The survey uses an Amazon EC2 instance that is hosted in a public subnet to host a customer survey website. The company uses an Amazon RDS DB instance that…

The correct answer is D. The wrong security group was associated with the new DB instance when it was restored from. https://docs.aws.amazon.com/AmazonRDS/latest/UserGuide/CHAP_Tutorials.RestoringFromSna

Submitted by andres_qro· Mar 6, 2026Monitoring and Troubleshooting

Question

A company has a quarterly customer survey. The survey uses an Amazon EC2 instance that is hosted in a public subnet to host a customer survey website. The company uses an Amazon RDS DB instance that is hosted in a private subnet in the same VPC to store the survey results. The company takes a snapshot of the DB instance after a survey is complete, deletes the DB instance, and then restores the DB instance from the snapshot when the survey needs to be conducted again. A database specialist discovers that the customer survey website times out when it attempts to establish a connection to the restored DB instance. What is the root cause of this problem?

Options

  • AThe VPC peering connection has not been configured properly for the EC2 instance to
  • BThe route table of the private subnet that hosts the DB instance does not have a NAT gateway
  • CThe public subnet that hosts the EC2 instance does not have an internet gateway configured for
  • DThe wrong security group was associated with the new DB instance when it was restored from

How the community answered

(46 responses)
  • A
    15% (7)
  • B
    7% (3)
  • C
    2% (1)
  • D
    76% (35)

Explanation

https://docs.aws.amazon.com/AmazonRDS/latest/UserGuide/CHAP_Tutorials.RestoringFromSna

Topics

#RDS#VPC networking#security groups#DB instance restore

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