Question 1easymultiple choice
Full question →easymultiple choiceObjective-mapped
A logistics company collects data from fleet sensors. Each sensor sends a JSON message containing the vehicle ID, timestamp, and a variable set of measurements such as engine temperature, tire pressure, and fuel level. The structure of the JSON message differs between sensor types and sometimes includes optional fields. 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 requires a fixed schema with consistent fields. The JSON messages here have varying fields, so this is incorrect.
B
Best answer
Semi-structured data
Correct. JSON data with optional fields and varying structure is a classic example of semi-structured data, which uses tags or keys to organize data without a rigid schema.
C
Distractor review
Unstructured data
Unstructured data has no identifiable structure (e.g., video, audio). The JSON messages have some organization, so they are not unstructured.
D
Distractor review
Relational data
Relational data is structured into tables with predefined schemas. The flexible nature of JSON does not fit the relational model.
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 2
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Question 3
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Question 4
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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 a flexible schema where fields can vary, which is characteristic of semi-structured data. Structured data requires a fixed schema, unstructured data has no schema, and relational data implies a fixed schema enforced by tables. JSON is a common format for semi-structured data.
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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