AWS Certified SysOps Administrator – Associate — Question 452

A company's application is hosted by an internet provider at app.example.com. The company wants to access the application by using www.company.com, which the company owns and manages with Amazon Route 53.
Which Route 53 record should be created to address this?

Answer options

• A. A record
• B. Alias record
• C. CNAME record
• D. Pointer (PTR) record

Correct answer: C

Explanation

A CNAME record is used to map one domain name to another domain name, making it the appropriate choice for redirecting www.company.com to the external host app.example.com. An A record is incorrect because it maps a domain directly to an IPv4 address. Route 53 Alias records cannot be used for external, non-AWS endpoints, and PTR records are designed for reverse DNS lookups.