- A
Increase the parallelism of the Flink application
Higher parallelism improves throughput.
- B
Configure the application to use event time processing instead of processing time
Event time handles out-of-order data better.
- C
Increase the checkpoint interval to reduce the frequency of checkpoints
Less frequent checkpoints reduce overhead.
- D
Decrease the parallelism to reduce resource contention
Why wrong: Decreasing parallelism may increase latency.
- E
Disable checkpointing to avoid checkpoint failures
Why wrong: Checkpointing is essential for fault tolerance.
Question 832 of 1,786
DEA-C01 Data Operations and Support Practice Question
This DEA-C01 practice question tests your understanding of data operations and support. 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 Analytics for Apache Flink to process streaming data. The application is experiencing high latency and checkpoint failures. Which THREE actions should the data engineer take to improve performance and reliability? (Choose three.)
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 parallelism of the Flink application
Options A, B, and C are correct. Option A: Increasing parallelism improves throughput by distributing workload across more resources. Option B: Using event time processing helps handle out-of-order data and can reduce latency and checkpoint failures by allowing more accurate watermarks. Option C: Increasing the checkpoint interval reduces the frequency of checkpoint operations, which can reduce checkpoint failures under high load. Option D is incorrect because decreasing parallelism reduces throughput, worsening latency. Option E is incorrect because disabling checkpointing removes fault tolerance and does not improve performance.
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.
- ✓
Increase the parallelism of the Flink application
Why this is correct
Higher parallelism improves throughput.
Related concept
Read the scenario before looking for a memorised answer.
- ✓
Configure the application to use event time processing instead of processing time
Why this is correct
Event time handles out-of-order data better.
Related concept
Read the scenario before looking for a memorised answer.
- ✓
Increase the checkpoint interval to reduce the frequency of checkpoints
Why this is correct
Less frequent checkpoints reduce overhead.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
Decrease the parallelism to reduce resource contention
Why it's wrong here
Decreasing parallelism may increase latency.
- ✗
Disable checkpointing to avoid checkpoint failures
Why it's wrong here
Checkpointing is essential for fault tolerance.
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 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
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.
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FAQ
Questions learners often ask
What does this DEA-C01 question test?
Data Operations and Support — This question tests Data Operations and Support — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Increase the parallelism of the Flink application — Options A, B, and C are correct. Option A: Increasing parallelism improves throughput by distributing workload across more resources. Option B: Using event time processing helps handle out-of-order data and can reduce latency and checkpoint failures by allowing more accurate watermarks. Option C: Increasing the checkpoint interval reduces the frequency of checkpoint operations, which can reduce checkpoint failures under high load. Option D is incorrect because decreasing parallelism reduces throughput, worsening latency. Option E is incorrect because disabling checkpointing removes fault tolerance and does not improve performance.
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.
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Last reviewed: Jun 20, 2026
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