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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

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Microsoft SC-200 Practice Test 72

Question 710

A detection rule was modified but new alert volume is zero after the change. Which action most directly addresses the observed condition?

  1. Validate response authorization and supported action constraints before enabling high-impact automation.
  2. Verify rule enabled state, recent matched data and the updated query.
  3. Apply narrow evidence-based filtering before turning on the detection.
  4. Convert the validated KQL into a supported custom detection rule.

Explanation

Correct Answer

B:

Detection silence may reflect logic, state or telemetry rather than true absence. This directly addresses the requirement to troubleshoot a silent custom detection.

Incorrect Answers

A:

Auto-response needs scoped evidence and operational safety controls. This addresses gate automatic hunting-driven containment; it does not directly satisfy troubleshoot a silent custom detection.

C:

Rule tuning improves signal-to-noise without discarding all endpoint monitoring. That action focuses on reduce false-positive custom detections rather than the specified need to troubleshoot a silent custom detection.

D:

Custom detection rules operationalize query logic into recurring alerts. This addresses promote a hunt into continuous monitoring; it does not directly satisfy troubleshoot a silent custom detection.

Question 711

A dataset has tied timestamps across devices and arg_max returns ambiguous device metadata because the grouping key is omitted. What is the most appropriate next action for the analyst?

  1. Replace the scalar max aggregation with arg_max selecting needed columns.
  2. Use arg_min(Timestamp, ...) by SHA256 with the necessary fields.
  3. Group by stable DeviceId alongside the timestamp selection.
  4. Use summarize arg_max(Timestamp, *) by DeviceId.

Explanation

Correct Answer

C:

Appropriate grouping keys preserve distinct endpoint identities. This directly addresses the requirement to prevent cross-device latest-row conflation.

Incorrect Answers

A:

Scalar max loses row context while arg_max can preserve it. This addresses keep latest-event context with timestamp; it does not directly satisfy prevent cross-device latest-row conflation.

B:

Arg_min selects row context corresponding to the first observed timestamp. Its intended use is to identify first-seen malicious file execution, whereas this case requires the analyst to prevent cross-device latest-row conflation.

D:

Arg_max returns fields from the row with the maximum timestamp per key. This addresses retrieve each device's latest full event; it does not directly satisfy prevent cross-device latest-row conflation.

Question 712

A query scans the entire tenant history repeatedly and frequently times out. Which response best meets the security operations requirement?

  1. Return supported timestamp and relevant device/report identifier fields in the detection query.
  2. Use the advanced hunting schema reference to inspect table columns and action types.
  3. Validate product deployment and telemetry coverage before interpreting an empty query result.
  4. Filter time and high-selectivity conditions early in the KQL pipeline.

Explanation

Correct Answer

D:

Early filtering reduces processing cost and query execution time. This directly addresses the requirement to optimize slow advanced hunting queries.

Incorrect Answers

A:

Detection output schema supports event correlation and alert entity mapping. This addresses make a hunting query detection-ready; it does not directly satisfy optimize slow advanced hunting queries.

B:

Schema reference documents supported fields and available event types. Its intended use is to ground a hunt in the correct schema, whereas this case requires the analyst to optimize slow advanced hunting queries.

C:

Unsupported or absent integrations produce no data independent of attack activity. That action focuses on distinguish unavailable hunting telemetry from no threats rather than the specified need to optimize slow advanced hunting queries.

Question 713

A report says attackers use a specific tool name, but the SOC wants to avoid false positives from legitimate use. Which approach is best supported by the evidence?

  1. Hunt for the tool with suspicious command-line and network context.
  2. Compare campaign indicators and local vulnerability or network evidence to assess exposure.
  3. Use the report's linked incidents or indicators and pivot to local alerts.
  4. Explain coverage limits and validate detectors using appropriate test evidence.

Explanation

Correct Answer

A:

Behavior context is more discriminating than a filename alone. This directly addresses the requirement to investigate dual-use campaign tooling.

Incorrect Answers

B:

Campaign intelligence becomes operational when mapped to the tenant's assets. Its intended use is to assess local relevance of a ransomware campaign, whereas this case requires the analyst to investigate dual-use campaign tooling.

C:

Related security telemetry can corroborate a campaign's observed impact. That action focuses on correlate global intelligence with tenant incidents rather than the specified need to investigate dual-use campaign tooling.

D:

Coverage summaries are not proof of complete protection against changing attacker behavior. This addresses communicate threat analytics uncertainty; it does not directly satisfy investigate dual-use campaign tooling.

Question 714

The team must match an exact security identifier value without accepting extra characters. Which action most directly addresses the observed condition?

  1. Use a contains predicate against the hostname field.
  2. Use exact string equality against the identifier column.
  3. Use a suitable has token search on the normalized command text.
  4. Use the appropriate KQL case-insensitive matching operator.

Explanation

Correct Answer

B:

Equality compares the whole value instead of fuzzy word or substring content. This directly addresses the requirement to match one exact security identifier.

Incorrect Answers

A:

Contains finds a sequence of characters inside larger strings. This addresses locate an embedded hostname substring; it does not directly satisfy match one exact security identifier.

C:

Has matches terms rather than arbitrary substrings when the token boundaries fit. That action focuses on find a complete command token rather than the specified need to match one exact security identifier.

D:

Case-insensitive comparison prevents variation in casing from hiding matching values. This addresses normalize case sensitivity in a hunt; it does not directly satisfy match one exact security identifier.

Question 715

An analyst wants a custom detection rule to respond automatically by isolating every matched production device. What is the most appropriate next action for the analyst?

  1. Verify rule enabled state, recent matched data and the updated query.
  2. Apply narrow evidence-based filtering before turning on the detection.
  3. Validate response authorization and supported action constraints before enabling high-impact automation.
  4. Convert the validated KQL into a supported custom detection rule.

Explanation

Correct Answer

C:

Auto-response needs scoped evidence and operational safety controls. This directly addresses the requirement to gate automatic hunting-driven containment.

Incorrect Answers

A:

Detection silence may reflect logic, state or telemetry rather than true absence. This addresses troubleshoot a silent custom detection; it does not directly satisfy gate automatic hunting-driven containment.

B:

Rule tuning improves signal-to-noise without discarding all endpoint monitoring. Its intended use is to reduce false-positive custom detections, whereas this case requires the analyst to gate automatic hunting-driven containment.

D:

Custom detection rules operationalize query logic into recurring alerts. This addresses promote a hunt into continuous monitoring; it does not directly satisfy gate automatic hunting-driven containment.

Question 716

A defender wants to count failed logon events grouped by account. Which response best meets the security operations requirement?

  1. Use summarize dcount(DeviceId) by account.
  2. Use summarize make_set(RemoteIP) by DeviceId within supported limits.
  3. Use summarize max(Timestamp) by DeviceId.
  4. Use summarize count() by AccountName after filtering failed logons.

Explanation

Correct Answer

D:

Count aggregation returns the number of matching events per group. This directly addresses the requirement to count failed authentication events by account.

Incorrect Answers

A:

Distinct count estimates unique devices rather than raw event volume. This addresses estimate distinct devices per identity; it does not directly satisfy count failed authentication events by account.

B:

Set aggregation builds distinct value collections for each group. Its intended use is to collect unique remote IPs by host, whereas this case requires the analyst to count failed authentication events by account.

C:

Maximum aggregation computes the newest time value in each device group. That action focuses on derive latest observed device event rather than the specified need to count failed authentication events by account.

Question 717

The SOC needs only DeviceName, Timestamp and RemoteIP from a network table. Which approach is best supported by the evidence?

  1. Use project to return the specified columns.
  2. Use sort by Timestamp descending after the account filter.
  3. Use the KQL take operator with an explicit row count.
  4. Use a KQL where predicate on ActionType before further processing.

Explanation

Correct Answer

A:

Project restricts output fields while preserving rows. This directly addresses the requirement to select only required hunting result columns.

Incorrect Answers

B:

Sort orders matching rows by their timestamps. Its intended use is to rank filtered events by recency, whereas this case requires the analyst to select only required hunting result columns.

C:

Take returns a bounded sample without providing exhaustive event analysis. That action focuses on inspect a small event sample rather than the specified need to select only required hunting result columns.

D:

Where filters input records based on a boolean condition. This addresses select events matching one exact action; it does not directly satisfy select only required hunting result columns.

Question 718

An analyst wants to identify which user actually clicked a malicious URL after receiving an email. Which action most directly addresses the observed condition?

  1. Query EmailAttachmentInfo joined by message identifiers as applicable.
  2. Query UrlClickEvents and correlate click account and URL.
  3. Query EmailEvents by sender and recipient with delivery status context.
  4. Query EmailUrlInfo using the relevant network message identifier.

Explanation

Correct Answer

B:

Click event telemetry distinguishes interaction from delivery alone. This directly addresses the requirement to locate Safe Links user click activity.

Incorrect Answers

A:

Attachment metadata connects file hashes to particular email messages. This addresses retrieve suspicious email attachment hashes; it does not directly satisfy locate Safe Links user click activity.

C:

EmailEvents contains mail-flow detection and disposition records. That action focuses on identify delivered malicious emails rather than the specified need to locate Safe Links user click activity.

D:

Email URL metadata identifies link indicators associated with messages. This addresses inspect URLs included in phishing mail; it does not directly satisfy locate Safe Links user click activity.

Question 719

The incident involves a service principal that accessed cloud resources through non-interactive authentication. What is the most appropriate next action for the analyst?

  1. Query DeviceInfo for endpoint properties and state.
  2. Query CloudAppEvents with application, account and activity fields.
  3. Query the appropriate Entra service principal sign-in event table.
  4. Query IdentityLogonEvents and related identity tables.

Explanation

Correct Answer

C:

Workload identity sign-ins differ from end-user interactive authentication records. This directly addresses the requirement to investigate service principal authentication.

Incorrect Answers

A:

DeviceInfo describes devices rather than individual process or file actions. This addresses retrieve endpoint inventory information; it does not directly satisfy investigate service principal authentication.

B:

CloudAppEvents provides cloud application operation context when integrated. Its intended use is to hunt anomalous cloud application activity, whereas this case requires the analyst to investigate service principal authentication.

D:

Identity sign-in telemetry covers supported domain and identity authentication. This addresses hunt suspicious on-premises logons; it does not directly satisfy investigate service principal authentication.

Question 720

An analyst uses leftanti but reverses the two tables and receives the approved accounts that never signed in. Which response best meets the security operations requirement?

  1. Use a leftanti or appropriate set difference to find accounts missing from one side.
  2. Use a leftanti join against the approved account set.
  3. Use narrow approved exceptions while keeping other VPN activity in the hunt.
  4. Put the observed events on the left and approved identities on the right.

Explanation

Correct Answer

D:

Leftanti direction determines which unmatched records survive. This directly addresses the requirement to correct a reversed exclusion join.

Incorrect Answers

A:

Set differences expose unmatched identities between reference and observed records. This addresses detect mismatches between observed and expected accounts; it does not directly satisfy correct a reversed exclusion join.

B:

Leftanti returns left-side records that have no matching key on the right. Its intended use is to identify unauthorized account activity, whereas this case requires the analyst to correct a reversed exclusion join.

C:

Large exclusion lists can conceal real attacker sessions using the same egress. That action focuses on avoid broad VPN-based hunting blind spots rather than the specified need to correct a reversed exclusion join.


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