- A
Elastic Load Balancing with AWS Systems Manager
Why wrong: ELB provides load balancing but not service discovery or mTLS; Systems Manager is not for networking.
- B
Amazon Route 53 with AWS Direct Connect
Why wrong: Route 53 provides DNS but not mTLS; Direct Connect is a physical connection, not for service discovery.
- C
AWS Lambda with Amazon API Gateway
Why wrong: Lambda and API Gateway are for serverless APIs, not for service mesh or service discovery in ECS.
- D
AWS App Mesh with AWS Cloud Map
App Mesh provides mTLS and Cloud Map provides service discovery, meeting both requirements.
Question 1,098 of 1,616
ECS Fargate Service Mesh with App Mesh and Cloud Map for Encrypted Service Discovery
This DVA-C02 practice question tests your understanding of development with aws services. Match the stated requirement to the specific cloud service, access model, or configuration option — many options are valid in isolation but not for this scenario. 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 deploying a microservices application using Amazon ECS with Fargate. The application consists of multiple services that need to communicate with each other over HTTP. The developer wants to ensure that service-to-service communication is encrypted in transit and that the services can discover each other by logical service names instead of IP addresses. Which combination of AWS services should the developer 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
✓
AWS App Mesh with AWS Cloud Map
AWS App Mesh provides a service mesh that handles service-to-service communication with encryption in transit using TLS, while AWS Cloud Map enables service discovery by logical names, allowing ECS services to resolve each other via DNS or API calls. Together, they meet the requirements for encrypted HTTP communication and logical name resolution without exposing IP addresses.
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.
- ✗
Elastic Load Balancing with AWS Systems Manager
Why it's wrong here
ELB provides load balancing but not service discovery or mTLS; Systems Manager is not for networking.
- ✗
Amazon Route 53 with AWS Direct Connect
Why it's wrong here
Route 53 provides DNS but not mTLS; Direct Connect is a physical connection, not for service discovery.
- ✗
AWS Lambda with Amazon API Gateway
Why it's wrong here
Lambda and API Gateway are for serverless APIs, not for service mesh or service discovery in ECS.
- ✓
AWS App Mesh with AWS Cloud Map
Why this is correct
App Mesh provides mTLS and Cloud Map provides service discovery, meeting both requirements.
Related concept
Read the scenario before looking for a memorised answer.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates often confuse service discovery with load balancing or serverless APIs, overlooking that App Mesh provides both encrypted service mesh and Cloud Map for logical name resolution, which is the exact combination needed for secure, discoverable inter-service communication.
Detailed technical explanation
How to think about this question
Under the hood, AWS App Mesh uses Envoy sidecar proxies to intercept all traffic between services, enforcing mTLS encryption and routing based on virtual services and routes. AWS Cloud Map integrates with App Mesh to register service instances with health checks, enabling DNS queries to return healthy endpoints by logical names (e.g., service-a.local). In a real-world scenario, this setup allows a service to call 'http://orders.internal' without hardcoding IPs, and App Mesh automatically rotates TLS certificates for each connection.
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 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. Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option. Cloud exam questions reward reading the constraint carefully: the same technology can be right or wrong depending on the use case.
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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: AWS App Mesh with AWS Cloud Map — AWS App Mesh provides a service mesh that handles service-to-service communication with encryption in transit using TLS, while AWS Cloud Map enables service discovery by logical names, allowing ECS services to resolve each other via DNS or API calls. Together, they meet the requirements for encrypted HTTP communication and logical name resolution without exposing IP addresses.
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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