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DBS-C01 · Question #133

A company has applications running on Amazon EC2 instances in a private subnet with no internet connectivity. The company deployed a new application that uses Amazon DynamoDB, but the application cann

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Submitted by femi9· Mar 6, 2026Deployment and Migration

Question

A company has applications running on Amazon EC2 instances in a private subnet with no internet connectivity. The company deployed a new application that uses Amazon DynamoDB, but the application cannot connect to the DynamoDB tables. A developer already checked that all permissions are set correctly. What should a database specialist do to resolve this issue while minimizing access to external resources?

Options

  • AAdd a route to an internet gateway in the subnet's route table.
  • BAdd a route to a NAT gateway in the subnet's route table.
  • CAssign a new security group to the EC2 instances with an outbound rule to ports 80 and 443.
  • DCreate a VPC endpoint for DynamoDB and add a route to the endpoint in the subnet's route table.

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Topics

#VPC endpoints#DynamoDB connectivity#Private subnet#Network access
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