AWS Certified SysOps Administrator – Associate (SOA-C03) — Question 42

A company has a microservice that runs on a set of Amazon EC2 instances. The EC2 instances run behind an Application Load Balancer (ALB).
A CloudOps engineer must use Amazon Route 53 to create a record that maps the ALB URL to example.com.
Which type of record will meet this requirement?

Answer options

• A. An A record
• B. An AAAA record
• C. An alias record
• D. A CNAME record

Correct answer: C

Explanation

The correct answer is C, an alias record, because it allows for the mapping of the ALB's DNS name directly to a domain without needing an IP address. An A record only points to an IP address, while a CNAME record can’t point to an ALB, and an AAAA record is used for IPv6 addresses which is not applicable in this scenario.