DEA-C01 Data Ingestion and Transformation Practice Question

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?

⚠ Common exam trap

Candidates often confuse the standard consumer throughput limit (2 MB/s total per shard shared among all consumers) with the enhanced fan-out limit (2 MB/s per shard per consumer), leading them to pick 2 MB/s or 5 MB/s instead of correctly multiplying by the number of shards.

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

✓

10 MB/s

With enhanced fan-out, each consumer gets a dedicated 2 MB/s read throughput per shard. Since the stream has 5 shards, the maximum read throughput per consumer is 5 shards × 2 MB/s = 10 MB/s. This is because enhanced fan-out eliminates the 2 MB/s total read limit per shard shared among all consumers, providing each consumer with its own 2 MB/s pipe per shard.

Answer analysis

Option-by-option breakdown

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.
✗
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).

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DEA-C01 Data Ingestion and Transformation Practice Question

Why each option matters

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