SAP-C02 Practice Question: Design Solutions for Organizational Complexity
A company is migrating a legacy application to AWS. The application requires a static IP address that can be used for whitelisting by third-party partners. The application will be deployed in multiple Availability Zones for high availability. The company wants to use a load balancer to distribute traffic. The solution must provide a single static IP address that does not change even if the underlying instances are replaced. Which combination of services should the company use?
⚠ Common exam trap
Test-takers frequently assume an ALB can have a static IP attached because it is a common load balancer, but ALBs are Layer 7 and inherently use dynamic IPs, while only NLBs (Layer 4) support Elastic IP assignment per subnet.
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
✓
Use a Network Load Balancer (NLB) with Elastic IP addresses assigned to each subnet.
A Network Load Balancer (NLB) supports static IP addresses by allowing you to assign Elastic IP addresses to each Availability Zone subnet. This provides a single static IP per AZ that does not change even when backend instances are replaced, meeting the requirement for a fixed whitelisting address across multiple AZs.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Use an Application Load Balancer (ALB) with a static Elastic IP address attached to the ALB.
Why it's wrong here
ALBs do not support attaching Elastic IPs directly.
- ✗
Use AWS Global Accelerator with an ALB as the endpoint.
Why it's wrong here
Global Accelerator provides static IPs, but the question asks for a load balancer; this is a valid solution but not the most direct.
- ✗
Use Amazon CloudFront with an ALB as the origin.
Why it's wrong here
CloudFront provides static IPs but is for content delivery.
- ✓
Use a Network Load Balancer (NLB) with Elastic IP addresses assigned to each subnet.
Why this is correct
NLBs support static IPs via Elastic IPs.
Visual reference
Go deeper
Related to this question
About these practice questions
One of 1,660 original SAP-C02 practice questions on Courseiva, each with a full explanation and wrong-answer analysis — not exam dumps or protected exam content. Learn why practice questions differ from exam dumps →
JA
Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This SAP-C02 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 SAP-C02 exam.