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What is the main purpose of an Elastic IP address in AWS?

easy📝 Conceptual Q11 of 15
AWS - EC2 Fundamentals
What is the main purpose of an Elastic IP address in AWS?
ATo provide a fixed public IP address that can be reassigned to different instances
BTo increase the storage capacity of an EC2 instance
CTo encrypt data in transit between AWS services
DTo automatically scale the number of EC2 instances
Step-by-Step Solution
Solution:

  1. Step 1: Understand Elastic IP purpose

    An Elastic IP is a static public IP address designed to be associated with AWS resources like EC2 instances.

  2. Step 2: Identify its main use

    It allows you to keep the same public IP even if you stop and start or replace the instance, ensuring consistent reachability.

  3. Final Answer:

    To provide a fixed public IP address that can be reassigned to different instances -> Option A

  4. Quick Check:

    Elastic IP = Fixed public IP for instances [OK]
Quick Trick: Elastic IP means fixed public IP for your server [OK]
Common Mistakes:
MISTAKES
  • Confusing Elastic IP with storage or encryption
  • Thinking Elastic IP auto-scales instances
  • Assuming Elastic IP changes on instance restart

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