hardMultiple ChoiceObjective-mapped
CV0-004 Practice Question: Migrating a legacy application that requires…
A company is migrating a legacy application that requires static public IP addresses for licensing. The cloud provider assigns public IPs dynamically by default. Which solution should the administrator recommend while minimizing cost?
⚠ Common exam trap
Many exam-takers choose a NAT gateway (Option A) thinking it provides a static public IP for the instance, but a NAT gateway only translates outbound traffic and does not assign a public IP to the instance for inbound licensing checks, while also incurring higher costs.
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
✓
Assign elastic IP addresses (or static public IPs) to the instances.
Elastic IP addresses (or static public IPs) provide persistent public IPv4 addresses that can be associated with instances, meeting the licensing requirement for static public IPs. This is the most cost-effective solution as it only incurs charges for allocated but unused Elastic IPs, whereas other options introduce additional infrastructure costs or fail to address the requirement.
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 a NAT gateway with a static IP.
Why it's wrong here
NAT gateways provide outbound traffic only; they do not allow inbound connections to instances.
- ✓
Assign elastic IP addresses (or static public IPs) to the instances.
Why this is correct
Elastic IPs are static public IPs that can be associated with instances at no cost while in use.
- ✗
Use static private IPs.
Why it's wrong here
Private IPs are not accessible from the internet, so they cannot be used for licensing that requires public IPs.
- ✗
Use a VPN connection.
Why it's wrong here
A VPN does not provide static public IPs for the instances.
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Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This CV0-004 practice question is part of Courseiva's free CompTIA 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 CV0-004 exam.