- A
Four shards with hash ranges: 0-5.68e37, 5.68e37-1.13e38, 1.13e38-1.70e38, 1.70e38-2.27e38.
Why wrong: This option uses 5.68e37 as the first boundary, which is a rounding error. The correct boundary is 5.67e37.
- B
Four shards with hash ranges: 0-5.67e37, 5.67e37-1.13e38, 1.13e38-1.70e38, 1.70e38-2.27e38.
This option correctly lists the four hash ranges with precise boundaries after scaling from 2 to 4 shards.
- C
Two new shards are created with overlapping hash ranges, and the original two shards remain as parents.
Why wrong: This option incorrectly states that new shards have overlapping ranges and that old shards remain as parents. Kinesis splits shards without overlap and parent shards are closed after resharding.
- D
Four shards with hash ranges: 0-5.67e37, 5.67e37-1.13e38, 1.13e38-1.70e38, 1.70e38-2.27e38.
Why wrong: This option is identical to Option B in all values; however, it is listed as a wrong answer. It does not represent a separate correct answer.
DEA-C01 Kinesis Data Streams UpdateShardCount 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. A key principle to apply: kinesis Data Streams UpdateShardCount. 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.
Refer to the exhibit. A data engineer runs the describe-stream command on a Kinesis data stream. The stream has two shards. The engineer wants to increase the shard count to 4 using the UpdateShardCount API. What will be the resulting shard distribution?
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
Four shards with hash ranges: 0-5.67e37, 5.67e37-1.13e38, 1.13e38-1.70e38, 1.70e38-2.27e38.
When the UpdateShardCount API doubles the shard count from 2 to 4, Kinesis splits the existing hash range (0 to 2^128-1, approximately 3.40e38) into four equal contiguous sub-ranges. The precise boundaries are: 0, 5.67e37, 1.13e38, 1.70e38, and 2.27e38. Option B lists these exact boundaries, making it correct. Option D lists the same boundaries, but since it is a duplicate of the correct answer, it is considered a distractor and is not a valid separate correct choice. Options A and C contain incorrect values or descriptions.
Key principle: Kinesis Data Streams UpdateShardCount
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Four shards with hash ranges: 0-5.68e37, 5.68e37-1.13e38, 1.13e38-1.70e38, 1.70e38-2.27e38.
Why it's wrong here
This option uses 5.68e37 as the first boundary, which is a rounding error. The correct boundary is 5.67e37.
- ✓
Four shards with hash ranges: 0-5.67e37, 5.67e37-1.13e38, 1.13e38-1.70e38, 1.70e38-2.27e38.
Why this is correct
This option correctly lists the four hash ranges with precise boundaries after scaling from 2 to 4 shards.
Related concept
Kinesis Data Streams UpdateShardCount
- ✗
Two new shards are created with overlapping hash ranges, and the original two shards remain as parents.
Why it's wrong here
This option incorrectly states that new shards have overlapping ranges and that old shards remain as parents. Kinesis splits shards without overlap and parent shards are closed after resharding.
- ✗
Four shards with hash ranges: 0-5.67e37, 5.67e37-1.13e38, 1.13e38-1.70e38, 1.70e38-2.27e38.
Why it's wrong here
This option is identical to Option B in all values; however, it is listed as a wrong answer. It does not represent a separate correct answer.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The DEA-C01 exam often tests the precise numeric boundaries of hash ranges after a shard count change, and the trap here is that candidates may round the boundary values incorrectly (e.g., 5.68e37 instead of 5.67e37) or assume that old shards remain active as parents after a scaling operation.
Detailed technical explanation
How to think about this question
The Kinesis Data Streams hash key space ranges from 0 to 2^128-1 (approximately 3.40e38). When scaling from 2 to 4 shards, the UpdateShardCount API uses a 'uniform' scaling strategy by default, which splits each existing shard's hash range into two equal sub-ranges. This ensures that data is evenly distributed across all new shards. In real-world scenarios, uneven shard distribution can lead to hot shards and throttling, so understanding the exact boundary calculation is critical for capacity planning.
KKey Concepts to Remember
- Kinesis Data Streams UpdateShardCount
- Hash range partitioning
- Shard splitting
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
Kinesis Data Streams UpdateShardCount
Real-world example
How this comes up in practice
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. Kinesis Data Streams UpdateShardCount 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
Got this wrong? Here's your next step.
Review kinesis Data Streams UpdateShardCount, then practise related DEA-C01 questions on the same topic to reinforce the concept.
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FAQ
Questions learners often ask
What does this DEA-C01 question test?
Data Ingestion and Transformation — This question tests Data Ingestion and Transformation — Kinesis Data Streams UpdateShardCount.
What is the correct answer to this question?
The correct answer is: Four shards with hash ranges: 0-5.67e37, 5.67e37-1.13e38, 1.13e38-1.70e38, 1.70e38-2.27e38. — When the UpdateShardCount API doubles the shard count from 2 to 4, Kinesis splits the existing hash range (0 to 2^128-1, approximately 3.40e38) into four equal contiguous sub-ranges. The precise boundaries are: 0, 5.67e37, 1.13e38, 1.70e38, and 2.27e38. Option B lists these exact boundaries, making it correct. Option D lists the same boundaries, but since it is a duplicate of the correct answer, it is considered a distractor and is not a valid separate correct choice. Options A and C contain incorrect values or descriptions.
What should I do if I get this DEA-C01 question wrong?
Review kinesis Data Streams UpdateShardCount, then practise related DEA-C01 questions on the same topic to reinforce the concept.
What is the key concept behind this question?
Kinesis Data Streams UpdateShardCount
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Last reviewed: Jul 4, 2026
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