You’ve set up a new VPC with a subnet. You’ve created an Internet gateway and attached it to the VPC. You ensured that the VPC is set to allow DNS Resolution and hostnames. You launched an EC2 Instance and ensured that it has a public IP and set the security groups and NACLs for access. But you still can’t connect to the Instance. Which one of the following additional step needs to be carried out?

Answer options:

A.Add the Internet gateway to the subnet as well.
B.Attach a Private IP to the Instance.
C.Ensure the Route table is modified.
D.Attach a NAT gateway to the VPC.

Answer – C
The following diagrams show a VPC with a public subnet. The question does not mention the change made to the route table which must also be done for the Internet access.
Option A is incorrect since the Internet gateway is attached to the VPC only.
Option B is incorrect since the Private IP is used for the Internal communication only.
Option D is incorrect since the NAT gateway is used for Instances in a private subnet to communicate with the Internet.
For more information on public subnets in a VPC, please refer to the below URL-
https://docs.aws.amazon.com/AmazonVPC/latest/UserGuide/VPC_Scenario1.html