Exam AWS Certified Solutions Architect - Professional topic 1 question 348 discussion

While VPC wizard create NAT gateway instead of NAT instance by default nowaday. C is still valid if user choose "Use a NAT instance instead" in the NAT section. See: https://docs.aws.amazon.com/en_pv/vpc/latest/userguide/VPC_Scenario2.html

https://docs.aws.amazon.com/vpc/latest/userguide/subnet-route-tables.html#custom-route-tables

The VPC wizard will update the main route table used with the public subnet, and create a custom route table with a private subnet. The custom route table will have a route that points to the NAT instance for all traffic that is destined for the internet. This will allow instances in the private subnet to connect to the internet. The statement in D is incorrect because the NAT instance will be created in the public subnet, not the private subnet.

C: - Update private subnet to point to NAT /0 --> NAT --> Public subnet will then need a route out via an IGW or similar.

Why not A? NAT has to be created manually, right?

C. VPC updates the main route table used with the private subnet, and creates a custom route table with a public subnet

D. VPC updates the main route table used with a public subnet, and creates a custom route table with a private subnet.