SOA-C03 · Question #114
A company uses Amazon EC2 Auto Scaling across multiple Availability Zones. The company must ensure that EC2 instances are provisioned in private subnets. The company recently optimized its cloud…
The correct answer is B. Update VPC route tables to target the existing NAT gateway for internet traffic. After consolidating to a single NAT gateway, private subnets in other Availability Zones might still have routes pointing to old or deleted NAT gateways. To restore internet connectivity, the CloudOps engineer must update each private subnet’s route table so that 0.0.0.0/0…
Question
A company uses Amazon EC2 Auto Scaling across multiple Availability Zones. The company must ensure that EC2 instances are provisioned in private subnets. The company recently optimized its cloud infrastructure by reducing the number of NAT gateways in the company’s VPC to one. Some EC2 instances lost internet connectivity after the infrastructure update. A CloudOps engineer must resolve the connectivity issue. Which solution will meet this requirement?
Options
- AReplace the existing NAT gateway with a NAT instance in the same subnet.
- BUpdate VPC route tables to target the existing NAT gateway for internet traffic.
- CUpdate VPC route tables to target an internet gateway for internet traffic.
- DAdd secondary IP addresses to the existing NAT gateway.
How the community answered
(19 responses)- A5% (1)
- B79% (15)
- C5% (1)
- D11% (2)
Explanation
After consolidating to a single NAT gateway, private subnets in other Availability Zones might still have routes pointing to old or deleted NAT gateways. To restore internet connectivity, the CloudOps engineer must update each private subnet’s route table so that 0.0.0.0/0 points to the current NAT gateway. This ensures that all private subnets send outbound internet traffic correctly through the existing NAT gateway.
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