- A
Always Encrypted with secure enclaves
Always Encrypted with secure enclaves provides column-level encryption and supports rich computations like pattern matching and range queries within the enclave, while preventing database administrators from seeing plaintext data.
- B
Transparent Data Encryption (TDE)
Why wrong: TDE encrypts the entire database at rest but automatically decrypts data when read; privileged users can access plaintext data. It does not support queries on encrypted data.
- C
Dynamic Data Masking
Why wrong: Dynamic Data Masking obfuscates data from non-privileged users but does not encrypt it; privileged users can see plaintext. It does not support encrypted queries.
- D
Row-Level Security
Why wrong: Row-Level Security controls access to rows based on a function but does not encrypt any data; privileged users can still read all rows.
Quick Answer
The answer is Always Encrypted with secure enclaves. This is the correct choice because it encrypts sensitive columns like medical history on the client side, ensuring that even a sysadmin cannot view plaintext data, while the secure enclave—a trusted execution environment inside the SQL Server engine—enables complex operations like pattern matching and range comparisons directly on the encrypted data. On the Azure Security Engineer Associate AZ-500 exam, this scenario tests your understanding of how to balance data confidentiality with query functionality; a common trap is selecting Transparent Data Encryption (TDE) or dynamic data masking, which protect at rest or obfuscate data but do not support rich computations on encrypted columns. Remember the key differentiator: if the requirement includes both column-level encryption and the need for pattern matching or range queries, secure enclaves are the only solution. Memory tip: think “enclave enables equality and range”—the enclave is the only place where encrypted data can be safely compared and searched.
AZ-500 Secure compute, storage, and databases Practice Question
This AZ-500 practice question tests your understanding of secure compute, storage, and databases. The scenario asks you to isolate a root cause — eliminate options that address a different problem before choosing. A key principle to apply: always Encrypted encrypts data on the client side before it reaches the database.. 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 healthcare organization stores sensitive patient data in Azure SQL Database. They need to encrypt specific columns containing medical history so that even database administrators with highly privileged roles, such as 'sysadmin', cannot view the plaintext data. Additionally, they need to support complex queries on the encrypted data, including pattern matching and range comparisons. Which encryption technology should they implement?
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
Always Encrypted with secure enclaves
Always Encrypted with secure enclaves is correct because it encrypts specific columns at the client side, ensuring that even database administrators with sysadmin privileges cannot view the plaintext data. The secure enclave feature allows computations (such as pattern matching and range comparisons) to be performed on the encrypted data inside a trusted execution environment, which is required by the question's need for complex queries on encrypted columns.
Key principle: Always Encrypted encrypts data on the client side before it reaches the database.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
Always Encrypted with secure enclaves
Why this is correct
Always Encrypted with secure enclaves provides column-level encryption and supports rich computations like pattern matching and range queries within the enclave, while preventing database administrators from seeing plaintext data.
Related concept
Always Encrypted encrypts data on the client side before it reaches the database.
- ✗
Transparent Data Encryption (TDE)
Why it's wrong here
TDE encrypts the entire database at rest but automatically decrypts data when read; privileged users can access plaintext data. It does not support queries on encrypted data.
- ✗
Dynamic Data Masking
Why it's wrong here
Dynamic Data Masking obfuscates data from non-privileged users but does not encrypt it; privileged users can see plaintext. It does not support encrypted queries.
- ✗
Row-Level Security
Why it's wrong here
Row-Level Security controls access to rows based on a function but does not encrypt any data; privileged users can still read all rows.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates often confuse Transparent Data Encryption (TDE) with column-level encryption, assuming TDE protects data from privileged users, but TDE only protects data at rest and does not prevent authorized database users from reading plaintext data.
Detailed technical explanation
How to think about this question
Always Encrypted with secure enclaves leverages a trusted execution environment (e.g., Intel SGX or Windows Virtualization-based security) to perform decryption and computations inside an isolated memory region, ensuring that even the database engine never sees plaintext keys or data. The enclave supports rich operations like LIKE pattern matching and range comparisons by using enclave-enabled column encryption keys that are provisioned to the enclave. A real-world scenario is a healthcare system where doctors need to query patient records by diagnosis code ranges without exposing the actual medical history to DBAs or cloud administrators.
KKey Concepts to Remember
- Always Encrypted encrypts data on the client side before it reaches the database.
- Secure enclaves allow computations on encrypted data without exposing plaintext to the database engine.
- Encryption keys for Always Encrypted are stored outside the database, typically in Azure Key Vault.
- Supports rich queries like pattern matching and range comparisons on encrypted columns within the enclave.
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
Always Encrypted encrypts data on the client side before it reaches the database.
Real-world example
How this comes up in practice
A company's IT admin needs to give a contractor read-only access to production logs without sharing account credentials. Using role-based access control (RBAC) and temporary scoped permissions — not a permanent shared password — is the correct pattern. Questions like this test whether you can apply least-privilege access across cloud identity services.
What to study next
Got this wrong? Here's your next step.
Review always Encrypted encrypts data on the client side before it reaches the database., then practise related AZ-500 questions on the same topic to reinforce the concept.
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FAQ
Questions learners often ask
What does this AZ-500 question test?
Secure compute, storage, and databases — This question tests Secure compute, storage, and databases — Always Encrypted encrypts data on the client side before it reaches the database..
What is the correct answer to this question?
The correct answer is: Always Encrypted with secure enclaves — Always Encrypted with secure enclaves is correct because it encrypts specific columns at the client side, ensuring that even database administrators with sysadmin privileges cannot view the plaintext data. The secure enclave feature allows computations (such as pattern matching and range comparisons) to be performed on the encrypted data inside a trusted execution environment, which is required by the question's need for complex queries on encrypted columns.
What should I do if I get this AZ-500 question wrong?
Review always Encrypted encrypts data on the client side before it reaches the database., then practise related AZ-500 questions on the same topic to reinforce the concept.
What is the key concept behind this question?
Always Encrypted encrypts data on the client side before it reaches the database.
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Last reviewed: Jun 11, 2026
This AZ-500 practice question is part of Courseiva's free Microsoft certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the AZ-500 exam.
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