DVA-C02 Development with AWS Services Practice Question
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 building a system that reads messages from an Amazon SQS queue, processes them, and stores results in an Amazon DynamoDB table. The developer wants to use a managed service to coordinate the processing steps, including error handling and retry logic, without provisioning any servers. Which AWS service should the developer use?
Step Functions can orchestrate multiple services, integrate with SQS and DynamoDB, and provide built-in error handling and retry policies.
B
Amazon Simple Workflow Service (SWF)
Why wrong: SWF is a legacy service for orchestrating tasks. It requires more manual management and is not the modern recommended serverless orchestration service; Step Functions is preferred.
C
AWS Glue
Why wrong: AWS Glue is an ETL (extract, transform, load) service primarily for data preparation for analytics. It is not designed for real-time message processing orchestration.
D
Amazon MQ
Why wrong: Amazon MQ is a managed message broker service that supports ActiveMQ and RabbitMQ. It does not provide orchestration capabilities.
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
AWS Step Functions
AWS Step Functions is a serverless orchestration service that lets you coordinate multiple AWS services into a workflow. It directly supports error handling, retry logic, and conditional branching, making it ideal for managing the processing steps of messages from SQS through to DynamoDB without provisioning any servers.
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.
✓
AWS Step Functions
Why this is correct
Step Functions can orchestrate multiple services, integrate with SQS and DynamoDB, and provide built-in error handling and retry policies.
Related concept
Read the scenario before looking for a memorised answer.
✗
Amazon Simple Workflow Service (SWF)
Why it's wrong here
SWF is a legacy service for orchestrating tasks. It requires more manual management and is not the modern recommended serverless orchestration service; Step Functions is preferred.
✗
AWS Glue
Why it's wrong here
AWS Glue is an ETL (extract, transform, load) service primarily for data preparation for analytics. It is not designed for real-time message processing orchestration.
✗
Amazon MQ
Why it's wrong here
Amazon MQ is a managed message broker service that supports ActiveMQ and RabbitMQ. It does not provide orchestration capabilities.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates confuse Amazon MQ (a message broker) with a workflow orchestrator, or mistakenly think SWF is the correct choice because it was historically used for workflow coordination, but Step Functions is the modern, serverless, and fully managed alternative that directly integrates with SQS and DynamoDB.
Detailed technical explanation
How to think about this question
Step Functions uses a state machine defined in Amazon States Language (ASL) to model workflows, with built-in 'Retry' and 'Catch' fields that implement exponential backoff and jitter automatically. It can directly poll SQS via a 'Task' state using the SQS ReceiveMessage API, then pass the message payload to a Lambda function for processing, and finally write results to DynamoDB with a 'DynamoDB.PutItem' task, all without custom polling code. A subtle behavior is that Step Functions' default timeout for a task is 60 seconds, but you can set a custom timeout up to one year for long-running processes.
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.
What to study next
Got this wrong? Here's your next step.
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
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 Step Functions — AWS Step Functions is a serverless orchestration service that lets you coordinate multiple AWS services into a workflow. It directly supports error handling, retry logic, and conditional branching, making it ideal for managing the processing steps of messages from SQS through to DynamoDB without provisioning any servers.
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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Question Discussion
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