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Question 376 - SOA-C02 discussion

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A company runs an application on hundreds of Amazon EC2 instances in three Availability Zones The application calls a third-parly API over the public internet A SysOps administrator must provide the third party with a list of static IP addresses so that the third party can allow traffic from the application

Which solution will meet these requirements?

A.
Add a NAT gateway in the public subnet of each Availability Zone. Make the NAT gateway the default route of all private subnets In those Availability Zones.
Answers
A.
Add a NAT gateway in the public subnet of each Availability Zone. Make the NAT gateway the default route of all private subnets In those Availability Zones.
B.
Allocate one Elastic IP address in each Availability Zone. Associate the Elastic IP address with all the instances in the Availability Zone
Answers
B.
Allocate one Elastic IP address in each Availability Zone. Associate the Elastic IP address with all the instances in the Availability Zone
C.
Place the instances behind a Network Load Balancer (NLB). Send the traffic to the interne! through the private IP address of the NLB
Answers
C.
Place the instances behind a Network Load Balancer (NLB). Send the traffic to the interne! through the private IP address of the NLB
D.
Update the main route table to send the traffic to the internet through an Elastic IP address that is assigned to each instance.
Answers
D.
Update the main route table to send the traffic to the internet through an Elastic IP address that is assigned to each instance.
Suggested answer: A

Explanation:

NAT Gateway Setup:

A NAT gateway allows instances in a private subnet to connect to the internet or other AWS services, but prevents the internet from initiating a connection with those instances.

Steps:

Go to the AWS Management Console.

Navigate to VPC and select 'NAT Gateways.'

Create a NAT gateway in the public subnet of each Availability Zone.

Allocate an Elastic IP address to each NAT gateway.

Update the route tables for the private subnets to route internet-bound traffic to the NAT gateways.

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asked 16/09/2024
Mike Schatens
31 questions
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