DEA-C01 Data Ingestion and Transformation Practice Question
A data streaming application uses Kinesis Data Streams with 10 shards. The data producer is throttled frequently. Which action should be taken to resolve this issue?
⚠ Common exam trap
Test-takers frequently confuse consumer-side features (like enhanced fan-out or retention period) with producer-side capacity issues, leading them to pick options that do not address the root cause of write throttling.
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
✓
Increase the number of shards
Throttling in Kinesis Data Streams occurs when the write throughput exceeds the shard limits. Each shard supports up to 1 MB/s or 1,000 records/s for writes. With 10 shards, the total write capacity is 10 MB/s or 10,000 records/s. Increasing the number of shards (Option D) directly increases the write capacity, resolving the throttling issue by distributing the load across more shards.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Decrease the data retention period
Why it's wrong here
Retention period does not affect write capacity.
- ✗
Use enhanced fan-out for consumers
Why it's wrong here
Enhanced Fan-Out is for consumers, not producers.
- ✗
Enable server-side encryption
Why it's wrong here
Encryption does not affect throughput.
- ✓
Increase the number of shards
Why this is correct
Each shard provides 1 MB/s write capacity, so more shards increase capacity.
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Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
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