The answer is to use a single shard or a partition key that ensures related records go to the same shard. This is correct because Kinesis Data Streams guarantees ordering only within a single shard; records are processed in the exact order they are received by that shard. By using a partition key that groups related social media posts—such as a post ID or user ID—you direct all records for that entity to the same shard, preserving record order in Kinesis Data Streams using partition key logic. On the AWS Certified Data Engineer Associate DEA-C01 exam, this tests your understanding of the trade-off between ordering and scalability: multiple shards improve throughput but break global ordering, while a single shard or well-chosen partition key maintains sequence. A common trap is assuming Kinesis Data Firehose or multiple shards preserve order, but they do not. Memory tip: “Same shard, same order—partition key is the guard.”
DEA-C01 Data Ingestion and Transformation Practice Question
This DEA-C01 practice question tests your understanding of data ingestion and transformation. 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 company is ingesting streaming data from social media feeds using Amazon Kinesis Data Streams. The data is consumed by multiple applications: one for real-time sentiment analysis and another for archival to S3. The data must be processed in order for each social media post. Which TWO approaches meet the requirements? (Choose TWO.)
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Use a single shard in the Kinesis Data Streams and have all consumers read from that shard
Option A is correct because using a single shard ensures ordering for all records. Option C is correct because using a partition key that groups related records ensures they go to the same shard, preserving order. Option B (multiple shards) does not guarantee global ordering. Option D (Firehose) does not guarantee ordering. Option E (SQS FIFO) can guarantee order but adds another service.
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 Kinesis Data Firehose to buffer and deliver to S3
Why it's wrong here
Firehose does not guarantee ordering.
✗
Use Amazon SQS FIFO queues between the stream and consumers
Why it's wrong here
Adds complexity and may not be necessary.
✓
Use a single shard in the Kinesis Data Streams and have all consumers read from that shard
Why this is correct
Single shard guarantees ordering.
Related concept
Read the scenario before looking for a memorised answer.
✓
Use a partition key that ensures related records go to the same shard
Why this is correct
Partition keys route records to shards, maintaining order per shard.
Related concept
Read the scenario before looking for a memorised answer.
✗
Use multiple shards and assign each consumer to a specific shard
Why it's wrong here
Ordering is only per shard, not across shards.
Common exam traps
Common exam trap: answer the scenario, not the keyword
Many certification questions include familiar terms but test a specific constraint. Read the exact wording before choosing an answer that is generally true but wrong for this case.
Detailed technical explanation
How to think about this question
This question should be treated as a scenario, not a definition check. Identify the problem, the constraint and the best action. Then compare each option against those facts.
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.
Use explanations to understand the rule behind the answer.
TExam Day Tips
→Underline the problem statement mentally.
→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.
What to study next
Got this wrong? Here's your next step.
Identify which DEA-C01 exam domain this question belongs to, then review the specific concept being tested. Practise related questions in that domain and focus on understanding why each wrong answer is tempting — not just why the correct answer is right.
Data Ingestion and Transformation — This question tests Data Ingestion and Transformation — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Use a single shard in the Kinesis Data Streams and have all consumers read from that shard — Option A is correct because using a single shard ensures ordering for all records. Option C is correct because using a partition key that groups related records ensures they go to the same shard, preserving order. Option B (multiple shards) does not guarantee global ordering. Option D (Firehose) does not guarantee ordering. Option E (SQS FIFO) can guarantee order but adds another service.
What should I do if I get this DEA-C01 question wrong?
Identify which DEA-C01 exam domain this question belongs to, then review the specific concept being tested. Practise related questions in that domain and focus on understanding why each wrong answer is tempting — not just why the correct answer is right.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
About these practice questions
Courseiva creates original exam-style practice questions with explanations and wrong-answer analysis. It does not publish real exam questions, exam dumps, or protected exam content. Learn why practice questions differ from exam dumps →
These questions test the same concept from different angles. Work through them to make sure you can recognise it however the exam phrases it.
Variation 1. A financial services company is ingesting trade data from multiple exchanges via Amazon Kinesis Data Streams. Each shard receives data from multiple exchanges, and a consumer application (using KCL) processes the data. The company needs to ensure that trades from the same exchange are processed in order. However, the current implementation distributes records to shards using a random partition key, causing trades from the same exchange to be spread across shards and processed out of order. The team must enforce ordering per exchange without significantly reducing throughput. What should the team do?
hard
A.Implement a custom sequence number in the application to reorder after processing.
B.Use a single shard for all data to guarantee order.
✓ C.Use the exchange ID as the partition key when putting records into the stream.
D.Increase the number of shards to 10 per exchange.
Why C: Option C is correct because using the exchange ID as the partition key ensures all trades from the same exchange go to the same shard, preserving order. Option A is wrong because increasing shard count would further spread data and break ordering. Option B is wrong because using a single shard would preserve order but reduce throughput due to shard limits. Option D is wrong because implementing a custom sequencer is complex and unnecessary.
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This DEA-C01 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 DEA-C01 exam.
Question Discussion
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