- A
Use Amazon ECS Service Discovery for service discovery, AWS Config for configuration, and AWS Systems Manager Parameter Store for secrets.
Why wrong: Config is for compliance auditing, not runtime config; Parameter Store can store secrets but Secrets Manager is more secure.
- B
Use AWS Cloud Map for service discovery, AWS AppConfig for configuration, and AWS Secrets Manager for secrets.
Cloud Map for service discovery, AppConfig for config, Secrets Manager for secrets.
- C
Use AWS Cloud Map for service discovery, AWS Systems Manager Parameter Store for configuration, and AWS Secrets Manager for secrets.
Why wrong: Parameter Store can manage config but AppConfig is better for config management.
- D
Use AWS Service Discovery for service discovery, EC2 Image Builder for configuration, and AWS Key Management Service (KMS) for secrets.
Why wrong: Image Builder is for AMIs, not runtime config; KMS is for encryption keys, not secrets.
Microservices Service Discovery, Configuration, and Secrets
This DVA-C02 practice question tests your understanding of development with aws services. This is a configuration task: choose the command set that satisfies every stated requirement. Small differences — like 'secret' vs 'password' or 'transport input ssh' vs 'all' — change whether the answer is correct. 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 company has a monolithic application running on an EC2 instance that needs to be migrated to a microservices architecture on AWS. The development team wants to use AWS services to handle service discovery, configuration management, and secrets management. Which combination of AWS services should the team use?
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 AWS Cloud Map for service discovery, AWS AppConfig for configuration, and AWS Secrets Manager for secrets.
Option B is correct because AWS Cloud Map provides service discovery for microservices by registering service instances and enabling DNS-based or API-based resolution. AWS AppConfig manages application configuration with validation and controlled rollouts, and AWS Secrets Manager handles secrets management with automatic rotation and fine-grained access control. Together, these services meet the specific needs of service discovery, configuration management, and secrets management in a microservices architecture.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
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 Amazon ECS Service Discovery for service discovery, AWS Config for configuration, and AWS Systems Manager Parameter Store for secrets.
Why it's wrong here
Config is for compliance auditing, not runtime config; Parameter Store can store secrets but Secrets Manager is more secure.
- ✓
Use AWS Cloud Map for service discovery, AWS AppConfig for configuration, and AWS Secrets Manager for secrets.
Why this is correct
Cloud Map for service discovery, AppConfig for config, Secrets Manager for secrets.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
Use AWS Cloud Map for service discovery, AWS Systems Manager Parameter Store for configuration, and AWS Secrets Manager for secrets.
Why it's wrong here
Parameter Store can manage config but AppConfig is better for config management.
- ✗
Use AWS Service Discovery for service discovery, EC2 Image Builder for configuration, and AWS Key Management Service (KMS) for secrets.
Why it's wrong here
Image Builder is for AMIs, not runtime config; KMS is for encryption keys, not secrets.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates often confuse AWS Systems Manager Parameter Store (which can store secrets but lacks automatic rotation and advanced access control) with AWS Secrets Manager, or mistakenly think AWS Config is suitable for application configuration management when it is actually for resource compliance and auditing.
Detailed technical explanation
How to think about this question
AWS Cloud Map uses DNS-based service discovery (SRV records) and HTTP API calls to resolve service endpoints, supporting both health checks and custom attributes for dynamic routing. AWS AppConfig integrates with AWS Systems Manager to provide configuration validation using JSON Schema or Lambda functions, and supports staged rollouts with bake time to detect issues. AWS Secrets Manager encrypts secrets at rest using KMS and automatically rotates them for supported database services (e.g., RDS, Redshift) and third-party integrations, with fine-grained IAM policies and resource-based policies for access control.
KKey Concepts to Remember
- Read the scenario before looking for a memorised answer.
- Find the constraint that changes the correct option.
- Eliminate answers that are true in general but not in this case.
TExam Day Tips
- Watch for words such as best, first, most likely and least administrative effort.
- Review why wrong options are wrong, not only why the correct option is correct.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
How this comes up in practice
A company's IT admin needs to give a contractor read-only access to production logs without sharing account credentials. Using role-based access control (RBAC) and temporary scoped permissions — not a permanent shared password — is the correct pattern. Questions like this test whether you can apply least-privilege access across cloud identity services.
Visual reference
What to study next
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FAQ
Questions learners often ask
What does this DVA-C02 question test?
Development with AWS Services — This question tests Development with AWS Services — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Use AWS Cloud Map for service discovery, AWS AppConfig for configuration, and AWS Secrets Manager for secrets. — Option B is correct because AWS Cloud Map provides service discovery for microservices by registering service instances and enabling DNS-based or API-based resolution. AWS AppConfig manages application configuration with validation and controlled rollouts, and AWS Secrets Manager handles secrets management with automatic rotation and fine-grained access control. Together, these services meet the specific needs of service discovery, configuration management, and secrets management in a microservices architecture.
What should I do if I get this DVA-C02 question wrong?
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
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Last reviewed: Jul 4, 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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