Explanation:
When the number of NAT gateways was reduced to one, the route tables for private subnets in other Availability Zones likely still pointed to the NAT gateways that were deleted. To restore connectivity, the route tables for all private subnets must be updated to point their default route (0.0.0.0/0) to the single remaining NAT gateway.
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Question #38: 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?
A
Replace the existing NAT gateway with a NAT instance in the same subnet.
B
Update VPC route tables to target the existing NAT gateway for internet traffic.
C
Update VPC route tables to target an internet gateway for internet traffic.
D
Add secondary IP addresses to the existing NAT gateway.
E
N/A
F
N/A
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