- A
Amazon S3
Why wrong: S3 is object storage.
- B
AWS Lambda
Why wrong: Lambda processes data, does not ingest.
- C
Amazon Simple Queue Service (SQS)
Why wrong: SQS is for decoupling applications, not high-throughput streaming.
- D
Amazon Kinesis Data Streams
Designed for real-time data ingestion.
Question 665 of 1,616
Ingesting and Buffering Real-Time Streaming Data with Kinesis Data Streams
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 needs to analyze real-time streaming data from thousands of devices. The data consists of JSON messages that must be processed and stored in Amazon S3. Which AWS service should the developer use to ingest and buffer the streaming data?
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
✓
Amazon Kinesis Data Streams
Amazon Kinesis Data Streams is designed for real-time ingestion and buffering of large-scale streaming data, such as JSON messages from thousands of devices. It can capture and store data in shards for up to 365 days, allowing downstream consumers (e.g., Lambda, Kinesis Data Analytics) to process the data before storing it in Amazon S3. This makes it the correct choice for ingesting and buffering the streaming data before persistent storage.
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.
- ✗
Amazon S3
Why it's wrong here
S3 is object storage.
- ✗
AWS Lambda
Why it's wrong here
Lambda processes data, does not ingest.
- ✗
Amazon Simple Queue Service (SQS)
Why it's wrong here
SQS is for decoupling applications, not high-throughput streaming.
- ✓
Amazon Kinesis Data Streams
Why this is correct
Designed for real-time data ingestion.
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 Amazon SQS with Kinesis Data Streams, but SQS is a pull-based queue for decoupling microservices, not a streaming data platform with shard-based parallelism and long-term retention, which is required for ingesting high-throughput real-time data from thousands of devices.
Detailed technical explanation
How to think about this question
Kinesis Data Streams uses shards as the base throughput unit, each providing 1 MB/s write and 2 MB/s read capacity, with data records stored for a default retention of 24 hours (configurable up to 365 days). Under the hood, the service partitions the stream across shards using a partition key, enabling parallel processing via multiple consumers using the Kinesis Client Library (KCL) with checkpointing in DynamoDB. A real-world scenario is ingesting IoT sensor data where each device sends JSON payloads; Kinesis buffers the data, allowing a Lambda function to transform and batch-write to S3 every 5 minutes, ensuring no data loss even during spikes.
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 media company stores terabytes of video archives that are accessed once a year for audit purposes. Moving these objects to a cold storage tier (Azure Archive, S3 Glacier, or Google Nearline) costs a fraction of hot storage. Questions like this test whether you understand storage tiers, access frequency tradeoffs, and retrieval latency requirements.
Quick reference
AWS S3 Storage Class Comparison
| Storage Class | Min Duration | Retrieval | Use Case |
|---|---|---|---|
| S3 Standard | None | Immediate | Frequently accessed data |
| S3 Standard-IA | 30 days | Immediate | Infrequent access, rapid retrieval |
| S3 One Zone-IA | 30 days | Immediate | Non-critical infrequent data |
| S3 Intelligent-Tiering | None | Immediate–hours | Unknown or changing access patterns |
| S3 Glacier Instant | 90 days | Milliseconds | Archive with instant retrieval |
| S3 Glacier Flexible | 90 days | Minutes–hours | Archive, flexible retrieval |
| S3 Glacier Deep Archive | 180 days | Hours | Long-term compliance archive |
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: Amazon Kinesis Data Streams — Amazon Kinesis Data Streams is designed for real-time ingestion and buffering of large-scale streaming data, such as JSON messages from thousands of devices. It can capture and store data in shards for up to 365 days, allowing downstream consumers (e.g., Lambda, Kinesis Data Analytics) to process the data before storing it in Amazon S3. This makes it the correct choice for ingesting and buffering the streaming data before persistent storage.
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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