Quick Answer
The answer is historical behavior baselines and machine learning, because User and Entity Behavior Analytics (UEBA) in Microsoft Sentinel primarily uses these two mechanisms to detect anomalies like a user accessing a sensitive HR app from an unusual IP at 3 AM. UEBA first establishes a baseline of normal activity for each user and entity over time—such as typical login hours, locations, and applications—then applies machine learning models to identify statistically significant deviations from that pattern. On the SC-900 exam, this concept tests your understanding of how UEBA differs from static rule-based detection; a common trap is confusing UEBA with threat intelligence feeds or manual rules, but remember that UEBA is adaptive and learns from historical data rather than relying on external lists or analyst input. A helpful memory tip: think of UEBA as a “behavioral fingerprint” that learns what’s normal for each user, so any out-of-character action triggers an alert.
This SC-900 practice question tests your understanding of describe the capabilities of microsoft security solutions. Read the scenario carefully and evaluate each option against the stated constraints before committing to an answer. 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 security operations center (SOC) team uses Microsoft Sentinel with User and Entity Behavior Analytics (UEBA) enabled. They notice an alert about a user accessing a sensitive HR application from an unusual IP address at 3 AM. What does UEBA primarily use to detect this anomaly?
Static rule-based thresholds defined by the SOC
Why wrong: UEBA is not rule-based; it uses ML.
Manual input from the SOC team
Why wrong: UEBA is automated and does not require manual input.
Historical behavior baselines and machine learning
UEBA uses ML to learn normal patterns and flag anomalies.
Threat intelligence feeds from Microsoft
Why wrong: Threat intelligence is separate from behavioral baselines.
Answer choices
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
Historical behavior baselines and machine learning
UEBA builds a baseline of normal user behavior over time and uses machine learning to detect deviations. Option A is wrong because static rules do not adapt to user patterns. Option B is wrong because threat intelligence feeds are external. Option C is wrong because manual analyst input is not the primary mechanism.
Key principle: NAT direction and interface roles matter as much as the IP address mapping. Inside/outside designation controls which traffic is translated.
Answer analysis
For each option: why learners choose it and why it is or isn't the right answer here.
Static rule-based thresholds defined by the SOC
Why it's wrong here
UEBA is not rule-based; it uses ML.
Manual input from the SOC team
Why it's wrong here
UEBA is automated and does not require manual input.
Historical behavior baselines and machine learning
Why this is correct
UEBA uses ML to learn normal patterns and flag anomalies.
Related concept
Static NAT maps one inside address to one outside address.
Threat intelligence feeds from Microsoft
Why it's wrong here
Threat intelligence is separate from behavioral baselines.
Common exam traps
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.
Detailed technical explanation
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.
Key takeaway
NAT direction and interface roles matter as much as the IP address mapping. Inside/outside designation controls which traffic is translated.
Real-world example
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
Review the four NAT address types (inside local, inside global, outside local, outside global), PAT port overload, and static vs dynamic NAT use cases. Then practise related SC-900 NAT questions on configuration and troubleshooting.
Describe the capabilities of Microsoft security solutions — study guide chapter
Learn the concepts, then practise the questions
Describe the capabilities of Microsoft security solutions practice questions
Targeted practice on this topic area only
All SC-900 questions
1,411 questions across all exam domains
Microsoft Security, Compliance, and Identity Fundamentals SC-900 study guide
Full concept coverage aligned to exam objectives
SC-900 practice test guide
How to use practice tests most effectively before exam day
Related practice questions
Use these pages to review the topic behind this question. This is how one missed question becomes focused revision.
Practise SC-900 questions linked to Describe the capabilities of Microsoft Entra.
Practise SC-900 questions linked to Describe the capabilities of Microsoft security solutions.
Practise SC-900 questions linked to Describe the capabilities of Microsoft compliance solutions.
Practise SC-900 questions linked to Describe the concepts of security, compliance, and identity.
Practise SC-900 questions linked to SC-900 fundamentals.
Practise SC-900 questions linked to SC-900 scenario.
Practise SC-900 questions linked to SC-900 troubleshooting.
Practice this exam
Short sessions build daily habit. Longer sessions build exam-day stamina. Try a timed session to simulate real conditions.
FAQ
Describe the capabilities of Microsoft security solutions — This question tests Describe the capabilities of Microsoft security solutions — Static NAT maps one inside address to one outside address..
The correct answer is: Historical behavior baselines and machine learning — UEBA builds a baseline of normal user behavior over time and uses machine learning to detect deviations. Option A is wrong because static rules do not adapt to user patterns. Option B is wrong because threat intelligence feeds are external. Option C is wrong because manual analyst input is not the primary mechanism.
Review the four NAT address types (inside local, inside global, outside local, outside global), PAT port overload, and static vs dynamic NAT use cases. Then practise related SC-900 NAT questions on configuration and troubleshooting.
Static NAT maps one inside address to one outside address.
About these practice questions
Courseiva creates original exam-style practice questions with explanations and wrong-answer analysis. It does not publish real exam questions, exam dumps, or protected exam content. Learn why practice questions differ from exam dumps →
Last reviewed: Jun 21, 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.
Question Discussion
Share a tip, memory trick, or ask about the reasoning behind this question. Do not post real exam questions, leaked content, braindumps, or copyrighted exam material. Comments are moderated and may be removed without notice.
Sign in to join the discussion.