AWS Certified SysOps Administrator – Associate — Question 400

A new website will run on Amazon EC2 instances behind an Application Load Balancer. Amazon Route 53 will be used to manage DNS records.
What type of record should be set in Route 53 to point the website's apex domain name (for example, `company.com`) to the Application Load Balancer?

Answer options

• A. CNAME
• B. SOA
• C. TXT
• D. ALIAS

Correct answer: D

Explanation

Amazon Route 53 ALIAS records are specifically designed to map a zone apex domain to AWS resources like an Application Load Balancer. Standard DNS protocol restrictions prevent the use of a CNAME record at the zone apex level. SOA and TXT records serve administrative and informational purposes and cannot be used to route traffic to a load balancer.