This DVA-C02 practice question tests your understanding of development with aws services. Read the scenario carefully and evaluate each option against the stated constraints before committing to an answer. After answering, compare your reasoning against the explanation and wrong-answer breakdown below. Once you have made your selection, read the full explanation to reinforce the concept and understand why each distractor is designed to mislead on exam day.
A developer is designing a microservices architecture using Amazon ECS with Fargate. The services need to communicate with each other. Which TWO options can the developer use for service discovery?
AWS Cloud Map
Managed service discovery.
AWS Global Accelerator
Why wrong: For global traffic, not service discovery.
Amazon ECS Service Connect
Native service discovery for ECS.
Amazon Route 53 private hosted zones
Why wrong: Used for custom DNS, not dynamic service discovery.
Application Load Balancer internal
Why wrong: Load balancer, not service discovery.
Answer choices
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
AWS Cloud Map
Option A is correct because Cloud Map provides DNS-based service discovery. Option D is correct because Service Connect is a native ECS feature for service discovery. Option B is wrong because R53 private hosted zones are for custom domain names, not dynamic service discovery. Option C is wrong because ALB is for load balancing, not service discovery. Option E is wrong because Global Accelerator is for global traffic.
Key principle: NAT direction and interface roles matter as much as the IP address mapping. Inside/outside designation controls which traffic is translated.
Answer analysis
For each option: why learners choose it and why it is or isn't the right answer here.
AWS Cloud Map
Why this is correct
Managed service discovery.
Related concept
Static NAT maps one inside address to one outside address.
AWS Global Accelerator
Why it's wrong here
For global traffic, not service discovery.
Amazon ECS Service Connect
Why this is correct
Native service discovery for ECS.
Related concept
Static NAT maps one inside address to one outside address.
Amazon Route 53 private hosted zones
Why it's wrong here
Used for custom DNS, not dynamic service discovery.
Application Load Balancer internal
Why it's wrong here
Load balancer, not service discovery.
Common exam traps
NAT is not only about the public address. The inside/outside interface roles and the ACL or rule that matches traffic are just as important.
Detailed technical explanation
NAT questions usually test address translation, overload/PAT behaviour, static mappings and whether the right traffic is being translated. Read the interface direction and address terms carefully.
Key takeaway
NAT direction and interface roles matter as much as the IP address mapping. Inside/outside designation controls which traffic is translated.
Real-world example
A cloud solutions architect for a retail company is evaluating services for a new workload. The correct answer here reflects best practice for the specific scenario described — not a general cloud recommendation. NAT direction and interface roles matter as much as the IP address mapping. Inside/outside designation controls which traffic is translated. Cloud exam questions reward reading the constraint carefully: the same technology can be right or wrong depending on the use case.
What to study next
Review the four NAT address types (inside local, inside global, outside local, outside global), PAT port overload, and static vs dynamic NAT use cases. Then practise related DVA-C02 NAT questions on configuration and troubleshooting.
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FAQ
Development with AWS Services — This question tests Development with AWS Services — Static NAT maps one inside address to one outside address..
The correct answer is: AWS Cloud Map — Option A is correct because Cloud Map provides DNS-based service discovery. Option D is correct because Service Connect is a native ECS feature for service discovery. Option B is wrong because R53 private hosted zones are for custom domain names, not dynamic service discovery. Option C is wrong because ALB is for load balancing, not service discovery. Option E is wrong because Global Accelerator is for global traffic.
Review the four NAT address types (inside local, inside global, outside local, outside global), PAT port overload, and static vs dynamic NAT use cases. Then practise related DVA-C02 NAT questions on configuration and troubleshooting.
Static NAT maps one inside address to one outside address.
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Last reviewed: Jun 20, 2026
This DVA-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 DVA-C02 exam.
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