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SC-200 Premium File: 499 Questions & Answers

Last Update: Oct 30, 2026

SC-200 Training Course: 47 Video Lectures

SC-200 PDF Study Guide: 441 Pages

$79.99

SC-200 Bundle gives you unlimited access to "SC-200" files. However, this does not replace the need for a .vce exam simulator. To download your .vce exam simulator click here

Microsoft SC-200 Practice Test 33

Question 320

An endpoint custom detection is intended for suspicious device activity but uses a user-only record with no device context. Which response best meets the security operations requirement?

  1. Project the event timestamp field as required by the custom detection schema.
  2. Inspect the table schema and correct the query column reference.
  3. Tighten the query's filtering and aggregation to prioritize high-signal events.
  4. Select the appropriate event table and project available device identifiers.

Explanation

Correct Answer

D:

Device-specific response requires a compatible device-scoped observation. This directly addresses the requirement to attach endpoint detections to actual devices.

Incorrect Answers

A:

Timestamp preservation improves chronology of generated alerts. This addresses capture correct custom alert event times; it does not directly satisfy attach endpoint detections to actual devices.

B:

Saved detections require resolvable source fields to execute. Its intended use is to fix invalid hunting field references, whereas this case requires the analyst to attach endpoint detections to actual devices.

C:

Custom detection runs have output limits, so volume management matters. That action focuses on avoid custom detection alert saturation rather than the specified need to attach endpoint detections to actual devices.

Question 321

A source records both accepted and denied firewall connections; an analytic is counting all connections as blocks. Which approach is best supported by the evidence?

  1. Filter the actual deny action value before summarization.
  2. Group the failed-logon count by account and host before thresholding.
  3. Include the relevant host or entity key in the aggregation.
  4. Use a distinct-account aggregation keyed by source IP.

Explanation

Correct Answer

A:

Correct action predicates preserve the difference between blocked and allowed traffic. This directly addresses the requirement to detect denied traffic accurately.

Incorrect Answers

B:

Per-account aggregation separates localized brute force from distributed spraying. Its intended use is to detect repeated account-specific failures, whereas this case requires the analyst to detect denied traffic accurately.

C:

Entity-aware grouping prevents cross-host events being mistaken for one attack. That action focuses on preserve host-scoped threshold meaning rather than the specified need to detect denied traffic accurately.

D:

Distinct-count logic tests breadth of targeted identities instead of raw event volume. This addresses detect password spraying rather than repeated typo logins; it does not directly satisfy detect denied traffic accurately.

Question 322

A suppression change is approved but the team has no evidence it still catches an actual attack pattern. Which action most directly addresses the observed condition?

  1. Replace the broad range with precise known-good endpoints or conditions.
  2. Run positive and negative test cases against the updated detection logic.
  3. Add a bounded exception for the validated service account with change documentation.
  4. Identify the generating rule and verify the suppression's actual scope.

Explanation

Correct Answer

B:

Validation demonstrates that tuning did not eliminate the intended signal. This directly addresses the requirement to validate detection after suppressions.

Incorrect Answers

A:

Wide network allowlists reduce detection coverage unnecessarily. This addresses repair unsafe network suppression; it does not directly satisfy validate detection after suppressions.

C:

Principal-scoped exclusions preserve monitoring of unrelated accounts. That action focuses on suppress approved service identity events only rather than the specified need to validate detection after suppressions.

D:

An exception on one rule does not automatically affect other detection sources. This addresses diagnose wrong-rule suppression; it does not directly satisfy validate detection after suppressions.

Question 323

A built-in ML detection is enabled but source tables were removed during a cost optimization. What is the most appropriate next action for the analyst?

  1. Evaluate alert evidence and use narrowly justified triage rules, not blanket closure.
  2. Distinguish event time from ingestion time and adjust triage priority accordingly.
  3. Restore the required data sources or acknowledge reduced detection coverage.
  4. Inspect contributing alerts and correlated entities within the Fusion incident.

Explanation

Correct Answer

C:

ML models cannot correlate events that are no longer ingested. This directly addresses the requirement to repair built-in ML input loss.

Incorrect Answers

A:

Blanket suppression risks missing true attacks contained in noisy model outputs. This addresses prevent unsafe ML alert dismissal; it does not directly satisfy repair built-in ML input loss.

B:

Late-arriving data can generate recent alerts for historical events. Its intended use is to assess late-ingested alert timelines, whereas this case requires the analyst to repair built-in ML input loss.

D:

Fusion conclusions are supported by underlying event and alert relationships. This addresses explain multi-signal detection evidence; it does not directly satisfy repair built-in ML input loss.

Question 324

A custom detection should include affected device identifiers so triage can pivot to the correct host. Which response best meets the security operations requirement?

  1. Create a custom detection rule from the validated advanced hunting query.
  2. Configure rule scope consistent with the creator's device permissions.
  3. Add evidence-backed filters and test query selectivity before re-enabling the rule.
  4. Project required timestamp and device or report identifier fields for the detection schema.

Explanation

Correct Answer

D:

Entity and event fields tie generated alerts to the underlying device observations. This directly addresses the requirement to enrich generated custom detection alerts.

Incorrect Answers

A:

Custom detections periodically rerun hunting logic and can produce actionable alerts. This addresses promote a validated hunt into ongoing detection; it does not directly satisfy enrich generated custom detection alerts.

B:

Custom detection scope is constrained by applicable device access and portal roles. Its intended use is to respect device-group access in custom detection, whereas this case requires the analyst to enrich generated custom detection alerts.

C:

Narrow predicates reduce routine matches while retaining distinct attack signals. That action focuses on reduce noisy custom detection alerts rather than the specified need to enrich generated custom detection alerts.

Question 325

The team creates a custom rule that returns no Timestamp column and generated alerts show inaccurate event timing. Which approach is best supported by the evidence?

  1. Project the event timestamp field as required by the custom detection schema.
  2. Inspect the table schema and correct the query column reference.
  3. Select the appropriate event table and project available device identifiers.
  4. Tighten the query's filtering and aggregation to prioritize high-signal events.

Explanation

Correct Answer

A:

Timestamp preservation improves chronology of generated alerts. This directly addresses the requirement to capture correct custom alert event times.

Incorrect Answers

B:

Saved detections require resolvable source fields to execute. Its intended use is to fix invalid hunting field references, whereas this case requires the analyst to capture correct custom alert event times.

C:

Device-specific response requires a compatible device-scoped observation. That action focuses on attach endpoint detections to actual devices rather than the specified need to capture correct custom alert event times.

D:

Custom detection runs have output limits, so volume management matters. This addresses avoid custom detection alert saturation; it does not directly satisfy capture correct custom alert event times.

Question 326

A new alert appears with a very old event timestamp after a delayed connector backlog. Which action most directly addresses the observed condition?

  1. Restore the required data sources or acknowledge reduced detection coverage.
  2. Distinguish event time from ingestion time and adjust triage priority accordingly.
  3. Evaluate alert evidence and use narrowly justified triage rules, not blanket closure.
  4. Inspect contributing alerts and correlated entities within the Fusion incident.

Explanation

Correct Answer

B:

Late-arriving data can generate recent alerts for historical events. This directly addresses the requirement to assess late-ingested alert timelines.

Incorrect Answers

A:

ML models cannot correlate events that are no longer ingested. This addresses repair built-in ML input loss; it does not directly satisfy assess late-ingested alert timelines.

C:

Blanket suppression risks missing true attacks contained in noisy model outputs. That action focuses on prevent unsafe ML alert dismissal rather than the specified need to assess late-ingested alert timelines.

D:

Fusion conclusions are supported by underlying event and alert relationships. This addresses explain multi-signal detection evidence; it does not directly satisfy assess late-ingested alert timelines.

Question 327

An existing custom detection already covers suspicious PowerShell execution, but a new verified command-line pattern is missing from its logic. What is the most appropriate next action for the analyst?

  1. Reduce query scope and joins while preserving the tested malicious inference.
  2. Include required entity columns or use an appropriate alerting query pattern.
  3. Edit and retest the existing custom detection query to include the new confirmed pattern.
  4. Deduplicate on supported event identity before creating the alerting rule.

Explanation

Correct Answer

C:

Targeted rule revision extends existing detection coverage without creating an overlapping duplicate alert source. This directly addresses the requirement to update an existing detection for a newly observed command pattern.

Incorrect Answers

A:

Detection queries must meet execution constraints for reliable periodic evaluation. This addresses optimize an expensive recurring detection; it does not directly satisfy update an existing detection for a newly observed command pattern.

B:

Device and account identifiers enable alert-to-entity mapping where supported. Its intended use is to preserve alert entity attribution, whereas this case requires the analyst to update an existing detection for a newly observed command pattern.

D:

Stable identifiers avoid repeated alerts for a single underlying occurrence. This addresses deduplicate endpoint process detection; it does not directly satisfy update an existing detection for a newly observed command pattern.

Question 328

An emerging malware campaign has documented malicious hashes and the SOC wants local endpoint matches. Which response best meets the security operations requirement?

  1. Create and test an early-stage detection using available matching telemetry.
  2. Assess local vulnerability and telemetry before claiming exposure.
  3. Combine additional behavioral context with the tool-name indicator.
  4. Query endpoint file event hashes against vetted current campaign indicators.

Explanation

Correct Answer

D:

Indicator correlation converts external threat intelligence into locally observable evidence. This directly addresses the requirement to hunt for campaign files on endpoints.

Incorrect Answers

A:

Stage-specific detection can improve response time before data leaves the organization. This addresses shift detection earlier in the attack chain; it does not directly satisfy hunt for campaign files on endpoints.

B:

Global campaign prevalence does not establish a given tenant's compromise. Its intended use is to distinguish global campaigns from local compromise, whereas this case requires the analyst to hunt for campaign files on endpoints.

C:

High-confidence behavioral evidence improves precision beyond raw process names. That action focuses on improve weak tool-name detection specificity rather than the specified need to hunt for campaign files on endpoints.

Question 329

Security leadership requires a periodic review of detections that have not fired in months. Which approach is best supported by the evidence?

  1. Review source health, query logic and relevance before retaining or retiring silent rules.
  2. Replace placeholders and validate organization-specific entity identifiers before enabling.
  3. Add accurate ATT&CK tactic and technique mappings to rule metadata.
  4. Correct the analytic workspace and data connector association before deployment.

Explanation

Correct Answer

A:

Long silence can indicate either low risk or detection failure. This directly addresses the requirement to assess dormant detection effectiveness.

Incorrect Answers

B:

Rule templates require scoped adaptation to real data and safe thresholds. Its intended use is to prevent unsafe template defaults in production, whereas this case requires the analyst to assess dormant detection effectiveness.

C:

Classification enriches investigation and coverage measurement. That action focuses on map rule alerts to ATT&CK correctly rather than the specified need to assess dormant detection effectiveness.

D:

Workspace-bound analytics can only evaluate supported accessible data. This addresses deploy detections to the correct workspace; it does not directly satisfy assess dormant detection effectiveness.

Question 330

An uncovered ATT&CK subtechnique is identified and its telemetry prerequisites are also missing. Which action most directly addresses the observed condition?

  1. Update the rule's ATT&CK tactic and technique mapping to match its actual behavior.
  2. Plan both necessary source onboarding and a matching detection analytic.
  3. Report distinct technique coverage separately from number of rules mapped.
  4. Inspect the MITRE ATT&CK coverage visualization for the relevant rules.

Explanation

Correct Answer

B:

Technique coverage requires observable signals as well as rule logic. This directly addresses the requirement to close a telemetry-backed ATT&CK gap.

Incorrect Answers

A:

Accurate technique classification improves coverage analysis and incident context. This addresses correct misclassified ATT&CK mappings; it does not directly satisfy close a telemetry-backed ATT&CK gap.

C:

Multiple rules can cover one behavior without expanding unique ATT&CK technique coverage. That action focuses on measure unique coverage rather than rule count rather than the specified need to close a telemetry-backed ATT&CK gap.

D:

ATT&CK mapping reveals which tactics and techniques have associated detections. This addresses assess lateral-movement detection coverage; it does not directly satisfy close a telemetry-backed ATT&CK gap.


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