- A
Create a DLP policy with a condition that matches the Credit Card Number sensitive info type and an action to block the email
This is the correct DLP configuration to block emails with credit card numbers.
- B
Configure Double Key Encryption for the Exchange Online mailbox
Why wrong: Double Key Encryption is for data protection, not blocking sharing.
- C
Configure a Safe Links policy in Microsoft Defender for Office 365
Why wrong: Safe Links protects against malicious URLs, not DLP.
- D
Use Microsoft Purview Customer Key for encryption
Why wrong: Customer Key is for encryption, not DLP.
Question 432 of 1,411
SC-900 Practice Question: Describe the capabilities of Microsoft security solutions
This SC-900 practice question tests your understanding of describe the capabilities of microsoft security solutions. This is a configuration task: choose the command set that satisfies every stated requirement. Small differences — like 'secret' vs 'password' or 'transport input ssh' vs 'all' — change whether the answer is correct. 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.
Your organization is implementing Microsoft Purview Data Loss Prevention (DLP). You need to prevent users from sharing sensitive credit card numbers via email. The DLP policy must trigger automatically when a user attempts to send an email containing a credit card number. Which DLP configuration should you use?
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
✓
Create a DLP policy with a condition that matches the Credit Card Number sensitive info type and an action to block the email
Option A is correct because Microsoft Purview DLP policies can be configured to detect sensitive information types, such as the Credit Card Number (defined by regex and checksum validation per PCI DSS), and automatically apply an action to block the email from being sent. This meets the requirement for automatic, policy-driven prevention of sharing credit card numbers via email.
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.
- ✓
Create a DLP policy with a condition that matches the Credit Card Number sensitive info type and an action to block the email
Why this is correct
This is the correct DLP configuration to block emails with credit card numbers.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
Configure Double Key Encryption for the Exchange Online mailbox
Why it's wrong here
Double Key Encryption is for data protection, not blocking sharing.
- ✗
Configure a Safe Links policy in Microsoft Defender for Office 365
Why it's wrong here
Safe Links protects against malicious URLs, not DLP.
- ✗
Use Microsoft Purview Customer Key for encryption
Why it's wrong here
Customer Key is for encryption, not DLP.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates confuse data-at-rest encryption controls (like Customer Key or Double Key Encryption) with data-loss prevention capabilities that inspect and block data in transit, leading them to select encryption options instead of the DLP policy.
Detailed technical explanation
How to think about this question
Under the hood, DLP policies in Exchange Online use transport rules and content inspection via the Exchange Transport Agent to scan email bodies and attachments for patterns matching the Credit Card Number sensitive info type, which includes Luhn algorithm validation. The action to block the email can be configured to either reject the message at the transport layer or send it to quarantine, ensuring the data never leaves the organization's boundary.
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.
What to study next
Got this wrong? Here's your next step.
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FAQ
Questions learners often ask
What does this SC-900 question test?
Describe the capabilities of Microsoft security solutions — This question tests Describe the capabilities of Microsoft security solutions — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Create a DLP policy with a condition that matches the Credit Card Number sensitive info type and an action to block the email — Option A is correct because Microsoft Purview DLP policies can be configured to detect sensitive information types, such as the Credit Card Number (defined by regex and checksum validation per PCI DSS), and automatically apply an action to block the email from being sent. This meets the requirement for automatic, policy-driven prevention of sharing credit card numbers via email.
What should I do if I get this SC-900 question wrong?
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
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Last reviewed: Jul 4, 2026
This SC-900 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 SC-900 exam.
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