PAS-C01 Migration Practice Question
A company is migrating a legacy application to AWS. The application requires a static IP address that must not change after migration. Which networking component should be used to ensure the application's public IP remains consistent?
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
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Elastic IP address
An Elastic IP address is a static public IPv4 address that can be associated with an EC2 instance or a Network Load Balancer, ensuring the application's public IP remains consistent. Option B (Internet Gateway) is used for VPC internet access but does not provide a static IP. Option C (VPC Peering) is for connecting VPCs. Option D (NAT Gateway) is for outbound traffic.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
Elastic IP address
Why this is correct
An Elastic IP address is a static public IPv4 address that can be associated with an EC2 instance or a Network Load Balancer, ensuring the application's public IP remains consistent.
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Internet Gateway
Why it's wrong here
An Internet Gateway is used for VPC internet access but does not provide a static IP address.
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VPC Peering
Why it's wrong here
VPC Peering is used to connect VPCs, not to provide a static public IP.
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NAT Gateway
Why it's wrong here
A NAT Gateway is used for outbound traffic from private subnets and does not provide a static public IP.
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JA
Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This PAS-C01 practice question is part of Courseiva's free Amazon Web Services certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the PAS-C01 exam.