Question 1mediummultiple choice
Full question →mediummultiple choiceObjective-mapped
A logistics company collects sensor data from delivery trucks. Each sensor sends a JSON message that includes a fixed set of core fields (truck ID, timestamp) but also includes optional fields such as temperature, humidity, and engine diagnostics depending on the sensor type. The JSON structure varies between messages. How should this data be classified?
Answer choices
Why each option matters
Good practice is not just finding the correct option. The wrong answers often show the exact trap the exam wants you to fall into.
A
Distractor review
Structured data
Structured data has a fixed schema with rows and columns. The JSON here has varying fields, so it is not strictly structured.
B
Best answer
Semi-structured data
Correct. Semi-structured data does not have a rigid schema but has some organizational properties (tags, markers) to separate data elements. JSON with optional fields is a classic example.
C
Distractor review
Unstructured data
Unstructured data has no inherent structure, like plain text or images. JSON has structure (key-value pairs), so it is not unstructured.
D
Distractor review
Relational data
Relational data is structured and stored in tables with predefined relationships. The data here is not relational.
Common exam trap
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.
Technical deep dive
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.
Related practice questions
Related DP-900 practice-question pages
Use these pages to review the topic behind this question. This is how one missed question becomes focused revision.
More questions from this exam
Keep practising from the same exam bank, or move into a focused topic page if this question exposed a weak area.
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Question 5
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Question 6
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FAQ
Questions learners often ask
What does this DP-900 question test?
Read the scenario before looking for a memorised answer.
What is the correct answer to this question?
The correct answer is: Semi-structured data — The data has some structure (key-value pairs) but the schema is not fixed and can vary between messages. This is characteristic of semi-structured data. Structured data has a rigid schema, unstructured data has no inherent structure, and relational data is a type of structured data stored in tables.
What should I do if I get this DP-900 question wrong?
Then try more questions from the same exam bank and focus on understanding why the wrong options are tempting.
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