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DBS-C01 · Question #158

DBS-C01 Question #158: Real Exam Question with Answer & Explanation

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Submitted by jordan8· Mar 6, 2026Monitoring and Troubleshooting

Question

A company hosts an internal file-sharing application running on Amazon EC2 instances in VPC_A. This application is backed by an Amazon ElastiCache cluster, which is in VPC_B and peered with VPC_A. The company migrates its application instances from VPC_A to VPC_B. Logs indicate that the file-sharing application no longer can connect to the ElastiCache cluster. What should a database specialist do to resolve this issue?

Options

  • ACreate a second security group on the EC2 instances.
  • BDelete the ElastiCache security group. Add an interface VPC endpoint to enable the EC2
  • CModify the ElastiCache security group by adding outbound rules that allow traffic to VPC_B's
  • DModify the ElastiCache security group by adding an inbound rule that allows traffic from the EC2

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Topics

#ElastiCache#VPC#security groups#network connectivity#troubleshooting
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