AWS Certified Advanced Networking – Specialty (ANS-C00) — Question 324

Which of these is not specified on an ENI?

Answer options

• A. A primary private IPv4 address
• B. A source/destination check flag
• C. A MAC address
• D. An A record

Correct answer: D

Explanation

An Elastic Network Interface (ENI) inherently contains attributes such as a primary private IPv4 address, a MAC address, and a source/destination check flag to control traffic routing. In contrast, an A record is a DNS resource record used to map a domain name to an IPv4 address, which is managed within a DNS service (like Route 53) rather than being a property specified on the ENI itself.