Explanation:
Options B and D are correct.
The requirements ask for a single static public IP address. This is achieved by creating an Elastic IP address (EIP) and associating it directly with the EC2 instance (Option D). Standard public IP addresses on EC2 are dynamic and change if the instance is stopped and started.
Additionally, to map the example.com domain to this new static IP address, you must create a Route 53 A record, because an "A record" maps a domain name directly to an IPv4 address (Option B).
Option A (ALB) is incorrect because an ALB provides a DNS name but does not provide a single static public IP address (an NLB or Global Accelerator would be required for static IPs). Option C is incorrect because CNAME records must point to other domain names, not IP addresses, and they cannot be used for the root domain (example.com). Option E does not help in assigning a single static public IP or mapping DNS.
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Question 6.
A company has migrated its legacy on-premises web application to an Amazon EC2 instance. The web application requires a single static public IP address to accept traffic and process requests. End users must be able to reach the web application through the example.com domain. A SysOps administrator must implement a solution that maintains the web application with the least amount of effort. Which combination of actions will meet these requirements? (Choose two.)
A
Configure an Application Load Balancer (ALB). Add the EC2 instance to a target group that is associated with the ALB.
B
Create an Amazon Route 53 A record for the associated EC2 IP address.
C
Create an Amazon Route 53 CNAME record for the associated EC2 IP address.
D
Create an Elastic IP address, and associate it with the EC2 instance.
E
Create an Auto Scaling group with a minimum capacity of 1 and a maximum capacity of 2.
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