AWS DevOps Engineer Professional Practice Test

How many Elastic IP addresses can an account have by default per AWS region?

1. 2

2. 5

3. 10

4. 15

The correct answer is: 5

By default, an AWS account can allocate up to five Elastic IP addresses per region. Elastic IP addresses are static IP addresses designed for dynamic cloud computing. They allow a user to maintain a permanent IP address for their resources even if the underlying infrastructure changes, such as stopping and starting EC2 instances. The limit of five per region is in place to ensure efficient IP address usage, as IPv4 addresses are a limited resource. This allocation encourages users to design their applications with elastic scalability in mind while preventing the excessive consumption of public IP addresses. In scenarios where an account requires more than the default limit, a user can request an increase from AWS. However, this increase is subject to approval based on the justification provided. Such measures help AWS manage IP address allocation effectively across its large customer base.