DVA-C02 Troubleshooting and Optimization Practice Question
This DVA-C02 practice question tests your understanding of troubleshooting and optimization. Examine the command output carefully: the correct answer depends on what the output actually shows, not on general recall alone. 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.
Network Topology
Refer to the exhibit. The developer runs the AWS CLI command to invoke a Lambda function. The output shows 'FunctionError': 'Unhandled'. What should the developer do to get more details about the error?
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Decode the base64-encoded 'LogResult' field to view the log output.
The 'LogResult' field contains a base64-encoded log. Decoding it provides the error details. Option A is correct. Option B is wrong because 'FunctionError' indicates an error, not success. Option C is wrong because CloudWatch Logs is another option but not directly from the CLI output. Option D is wrong because X-Ray traces requests but not errors.
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.
✗
Re-invoke the function with a valid payload because the error is due to invalid input.
Why it's wrong here
The error is 'Unhandled', but the payload may be valid. The log will show the actual error.
✗
Enable AWS X-Ray tracing on the function.
Why it's wrong here
X-Ray traces requests but does not provide error details from a single invocation.
✓
Decode the base64-encoded 'LogResult' field to view the log output.
Why this is correct
The 'LogResult' contains the base64-encoded log; decoding it shows the error.
Related concept
Read the scenario before looking for a memorised answer.
✗
Check the CloudWatch Logs for the function's log group.
Why it's wrong here
This is possible but not directly from the CLI output. The 'LogResult' is more immediate.
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.
Trap categories for this question
Command / output trap
The error is 'Unhandled', but the payload may be valid. The log will show the actual error.
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 DVA-C02 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.
Troubleshooting and Optimization — This question tests Troubleshooting and Optimization — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Decode the base64-encoded 'LogResult' field to view the log output. — The 'LogResult' field contains a base64-encoded log. Decoding it provides the error details. Option A is correct. Option B is wrong because 'FunctionError' indicates an error, not success. Option C is wrong because CloudWatch Logs is another option but not directly from the CLI output. Option D is wrong because X-Ray traces requests but not errors.
What should I do if I get this DVA-C02 question wrong?
Identify which DVA-C02 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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Question Discussion
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