DP-900 Describe core data concepts Practice Question
This DP-900 practice question tests your understanding of describe core data concepts. The scenario asks you to isolate a root cause — eliminate options that address a different problem before choosing. 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 hospital stores patient records. Each record includes a PatientID (integer), Name (text), DateOfBirth (date), and MRI scan images (binary files). Which classification best describes the MRI scan images?
Clue words in this question
Noticing these words before you look at the options changes how you read each choice.
Clue: "best"
Why it matters: Signals that multiple options may be partially correct. Choose the option that most directly solves the exact problem described, not the one that sounds most complete.
Why wrong: Structured data conforms to a fixed schema (e.g., tables with rows and columns). MRI scan images do not have a predefined schema, so they are not structured.
B
Semi-structured data
Why wrong: Semi-structured data, such as JSON or XML, has tags or markers to separate data elements but still some flexibility. Images are binary and do not contain self-describing metadata.
C
Unstructured data
Unstructured data has no predefined data model. Binary files like images, videos, and audio files fall into this category.
D
Streaming data
Why wrong: Streaming data is generated continuously from sources like IoT devices or social media feeds and is not static. The MRI images are stored files, not streaming.
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Unstructured data
MRI scan images are binary files that lack a predefined data model or schema, making them unstructured data. Unlike structured data (e.g., rows in a SQL table) or semi-structured data (e.g., JSON with tags), binary image files cannot be easily queried or organized using traditional relational database tools without additional processing.
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.
✗
Structured data
Why it's wrong here
Structured data conforms to a fixed schema (e.g., tables with rows and columns). MRI scan images do not have a predefined schema, so they are not structured.
✗
Semi-structured data
Why it's wrong here
Semi-structured data, such as JSON or XML, has tags or markers to separate data elements but still some flexibility. Images are binary and do not contain self-describing metadata.
✓
Unstructured data
Why this is correct
Unstructured data has no predefined data model. Binary files like images, videos, and audio files fall into this category.
Clue confirmation
The clue word "best" in the question point toward this answer.
Related concept
Read the scenario before looking for a memorised answer.
✗
Streaming data
Why it's wrong here
Streaming data is generated continuously from sources like IoT devices or social media feeds and is not static. The MRI images are stored files, not streaming.
Common exam traps
Common exam trap: answer the scenario, not the keyword
Microsoft often tests the misconception that any data stored in a database (e.g., as a BLOB) is structured, but the classification depends on the data's internal format, not its storage location.
Detailed technical explanation
How to think about this question
In Azure, unstructured data like MRI images is often stored in Azure Blob Storage or Azure Data Lake Storage, while metadata (e.g., PatientID) is kept in Azure SQL Database. The binary large object (BLOB) data type in SQL Server can store such images, but querying the image content requires external tools like Azure Cognitive Services for computer vision. This separation of storage and processing is key to handling unstructured data at scale.
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.
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
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.
Related glossary terms
Concepts from this question explained
These glossary pages explain the core terms tested in this DP-900 question in full detail.
Describe core data concepts — This question tests Describe core data concepts — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Unstructured data — MRI scan images are binary files that lack a predefined data model or schema, making them unstructured data. Unlike structured data (e.g., rows in a SQL table) or semi-structured data (e.g., JSON with tags), binary image files cannot be easily queried or organized using traditional relational database tools without additional processing.
What should I do if I get this DP-900 question wrong?
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
Are there clue words in this question I should notice?
Yes — watch for: "best". Signals that multiple options may be partially correct. Choose the option that most directly solves the exact problem described, not the one that sounds most complete.
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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