Question 1hardmultiple choice
Full question →hardmultiple choiceObjective-mapped
A healthcare company stores sensitive patient data in Azure SQL Database. They want to encrypt specific columns containing Personally Identifiable Information (PII) so that even database administrators cannot view the data. The security team also needs to perform equality searches (e.g., WHERE SSN = '123-45-6789') on the encrypted columns. Which encryption technology should they implement?
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
Always Encrypted with randomized encryption.
Randomized encryption does not support equality searches; it is used for pattern-hiding but prevents any comparison operations inside the database.
B
Distractor review
Always Encrypted with deterministic encryption.
Deterministic encryption supports equality searches but is less secure because the database engine can see patterns from repeated values. Secure enclaves provide stronger security while still allowing equality searches.
C
Best answer
Always Encrypted with secure enclaves.
Secure enclaves allow computations on encrypted data inside a protected memory region. This supports equality searches and other operations while keeping the data encrypted from the database engine and administrators.
D
Distractor review
Transparent Data Encryption (TDE).
TDE encrypts the entire database at rest but does not protect data from database administrators who have access to the database engine. It does not provide column-level encryption or computation support.
Common exam trap
Common exam trap: NAT rules depend on direction and matching traffic
NAT is not only about the public address. The inside/outside interface roles and the ACL or rule that matches traffic are just as important.
Technical deep dive
How to think about this question
NAT questions usually test address translation, overload/PAT behaviour, static mappings and whether the right traffic is being translated. Read the interface direction and address terms carefully.
KKey Concepts to Remember
- Static NAT maps one inside address to one outside address.
- PAT allows many inside hosts to share one public address using ports.
- Inside local and inside global describe the private and translated addresses.
- NAT ACLs identify traffic for translation, not always security filtering.
TExam Day Tips
- Identify inside and outside interfaces first.
- Check whether the scenario needs static NAT, dynamic NAT or PAT.
- Do not confuse NAT matching ACLs with normal packet-filtering intent.
Related practice questions
Related AZ-500 practice-question pages
Use these pages to review the topic behind this question. This is how one missed question becomes focused revision.
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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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FAQ
Questions learners often ask
What does this AZ-500 question test?
Static NAT maps one inside address to one outside address.
What is the correct answer to this question?
The correct answer is: Always Encrypted with secure enclaves. — Always Encrypted with secure enclaves allows rich computations (including equality searches) on encrypted columns while keeping the data encrypted from the database engine. Deterministic encryption supports equality searches but does not provide the same level of security as enclaves because the database engine can still see patterns. Randomized encryption does not support equality searches. Transparent Data Encryption (TDE) encrypts the entire database at rest but does not protect data from database administrators. The correct answer is Always Encrypted with secure enclaves.
What should I do if I get this AZ-500 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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