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What is an Elastic IP address in AWS used for?

easy📝 Conceptual Q1 of 15
AWS - EC2 Fundamentals
What is an Elastic IP address in AWS used for?
AAn IP address that changes every time an instance restarts
BA private IP address assigned to an instance
CA DNS name for an instance
DA static public IP address that can be moved between 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 instances.

  2. Step 2: Compare options

    Only A static public IP address that can be moved between instances correctly describes a static IP that can be reassigned between instances.

  3. Final Answer:

    A static public IP address that can be moved between instances -> Option D

  4. Quick Check:

    Elastic IP = Static movable IP [OK]
Quick Trick: Elastic IPs are static and movable public IPs [OK]
Common Mistakes:
  • Confusing Elastic IP with private IP
  • Thinking Elastic IP changes on reboot
  • Assuming Elastic IP is a DNS name

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