Quick Answer
The answer is 10 MB/s per consumer. This is correct because enhanced fan-out provides each consumer with dedicated 2 MB/s of read throughput per shard, independent of other consumers. With 5 shards, each consumer can read up to 10 MB/s total, since they read from all shards simultaneously. On the AWS Certified Data Engineer Associate DEA-C01 exam, this concept tests your understanding of the key difference between standard and enhanced fan-out consumers: standard consumers share a total of 2 MB/s per shard across all consumers, while enhanced fan-out gives each consumer its own 2 MB/s per shard. A common trap is confusing the 1 MB/s per shard write limit with the read limits, or assuming enhanced fan-out still uses the shared 2 MB/s pool. To remember, think of enhanced fan-out as “dedicated lanes” for each consumer, with each lane offering 2 MB/s per shard. A useful mnemonic is “EFO = Each Fan Out gets 2 per shard.”
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 uses Amazon Kinesis Data Streams with enhanced fan-out consumers. The stream has 5 shards. Each consumer reads from all shards. The total incoming data rate is 25 MB/s. What is the maximum read throughput per consumer if enhanced fan-out is enabled?
2 MB/s
Why wrong: 2 MB/s is the per-shard read capacity with enhanced fan-out, not total.
10 MB/s
Each shard provides 2 MB/s read capacity with enhanced fan-out; 5 shards = 10 MB/s.
1 MB/s
Why wrong: 1 MB/s is the per-shard write capacity.
5 MB/s
Why wrong: 5 MB/s is the total write capacity (1 MB/s per shard).
Answer choices
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
10 MB/s
Option A is correct because enhanced fan-out provides each consumer with dedicated 2 MB/s per shard read throughput. With 5 shards, each consumer can read up to 10 MB/s. Option B is wrong because that is the total write capacity. Option C is wrong because that is the read capacity without enhanced fan-out. Option D is wrong because that is the per-shard write capacity.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Answer analysis
For each option: why learners choose it and why it is or isn't the right answer here.
2 MB/s
Why it's wrong here
2 MB/s is the per-shard read capacity with enhanced fan-out, not total.
10 MB/s
Why this is correct
Each shard provides 2 MB/s read capacity with enhanced fan-out; 5 shards = 10 MB/s.
Related concept
Read the scenario before looking for a memorised answer.
1 MB/s
Why it's wrong here
1 MB/s is the per-shard write capacity.
5 MB/s
Why it's wrong here
5 MB/s is the total write capacity (1 MB/s per shard).
Common exam traps
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
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.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
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
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.
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FAQ
Data Ingestion and Transformation — This question tests Data Ingestion and Transformation — Read the scenario before looking for a memorised answer..
The correct answer is: 10 MB/s — Option A is correct because enhanced fan-out provides each consumer with dedicated 2 MB/s per shard read throughput. With 5 shards, each consumer can read up to 10 MB/s. Option B is wrong because that is the total write capacity. Option C is wrong because that is the read capacity without enhanced fan-out. Option D is wrong because that is the per-shard write capacity.
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.
Read the scenario before looking for a memorised answer.
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Last reviewed: Jun 20, 2026
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.
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