- A
Journal rule
Why wrong: Journal rules record messages for compliance, not add disclaimers.
- B
Data loss prevention (DLP) policy
Why wrong: DLP policies prevent sharing sensitive data, not add disclaimers.
- C
Safe Links policy
Why wrong: Safe Links protects links, not adds disclaimers.
- D
Mail flow rule (transport rule)
Mail flow rules can apply disclaimers to messages based on conditions.
Question 1,101 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 wants to ensure that all external emails are automatically tagged with a disclaimer at the top of the email body. Which Microsoft Exchange Online feature should you configure?
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
✓
Mail flow rule (transport rule)
Mail flow rules (also known as transport rules) in Exchange Online allow you to inspect messages and take actions such as adding a disclaimer to the top of the email body. This rule can be scoped to apply only to external emails by using the condition 'The sender is located outside the organization'. The action 'Prepend a disclaimer' inserts the text at the beginning of the message body, meeting the requirement precisely.
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.
- ✗
Journal rule
Why it's wrong here
Journal rules record messages for compliance, not add disclaimers.
- ✗
Data loss prevention (DLP) policy
Why it's wrong here
DLP policies prevent sharing sensitive data, not add disclaimers.
- ✗
Safe Links policy
Why it's wrong here
Safe Links protects links, not adds disclaimers.
- ✓
Mail flow rule (transport rule)
Why this is correct
Mail flow rules can apply disclaimers to messages based on conditions.
Related concept
Read the scenario before looking for a memorised answer.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates often confuse mail flow rules with DLP policies because both can apply conditions and actions to emails, but DLP policies cannot modify the email body with a disclaimer—they only detect and protect data.
Detailed technical explanation
How to think about this question
Under the hood, mail flow rules are processed by the Exchange Transport service using the Transport Agent architecture, which intercepts SMTP messages as they flow through the pipeline. The 'prepend disclaimer' action uses MIME (Multipurpose Internet Mail Extensions) to insert the disclaimer text at the beginning of the message body, which can be plain text or HTML. A real-world scenario: an organization might use this to add a confidentiality notice to all emails from external senders, ensuring legal compliance without altering the original message content.
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: Mail flow rule (transport rule) — Mail flow rules (also known as transport rules) in Exchange Online allow you to inspect messages and take actions such as adding a disclaimer to the top of the email body. This rule can be scoped to apply only to external emails by using the condition 'The sender is located outside the organization'. The action 'Prepend a disclaimer' inserts the text at the beginning of the message body, meeting the requirement precisely.
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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