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Microsoft SC-200 Practice Test 67

Question 660

The SOC needs to count unique destination domains rather than return the domains themselves. Which response best meets the security operations requirement?

  1. Retain event rows or use an ordered method rather than make_set deduplication.
  2. Apply bounded collection limits or change to an appropriately filtered event list.
  3. Use make_set on the IP column grouped by user.
  4. Use dcount on the normalized destination domain field.

Explanation

Correct Answer

D:

Distinct cardinality aggregation answers a count question rather than producing a value list. This directly addresses the requirement to estimate unique contacted domains.

Incorrect Answers

A:

A set removes duplicates and does not preserve full event chronology. This addresses preserve repeated command evidence; it does not directly satisfy estimate unique contacted domains.

B:

Very large dynamic arrays are poor substitutes for targeted event investigation. Its intended use is to constrain oversized KQL collections, whereas this case requires the analyst to estimate unique contacted domains.

C:

Make_set produces distinct collection elements. That action focuses on list unique source IPs per user rather than the specified need to estimate unique contacted domains.

Question 661

The hunt asks whether an attacker placed a new executable in a user's startup directory. Which approach is best supported by the evidence?

  1. Query DeviceFileEvents for file creation and path evidence.
  2. Query DeviceProcessEvents and inspect parent process fields.
  3. Query DeviceRegistryEvents for the relevant key path and action type.
  4. Query DeviceNetworkEvents for remote address and initiating process.

Explanation

Correct Answer

A:

DeviceFileEvents captures supported file creation and modification activity. This directly addresses the requirement to detect suspicious endpoint file placement.

Incorrect Answers

B:

DeviceProcessEvents records process creation context and initiating process relationships. Its intended use is to hunt for suspicious process ancestry, whereas this case requires the analyst to detect suspicious endpoint file placement.

C:

DeviceRegistryEvents exposes supported registry changes and initiating activity. That action focuses on find registry persistence changes rather than the specified need to detect suspicious endpoint file placement.

D:

DeviceNetworkEvents describes endpoint network connections and their process context. This addresses identify outbound endpoint network connections; it does not directly satisfy detect suspicious endpoint file placement.

Question 662

A security result depends on a third-party enrichment table that may have changed after the hunt. Which action most directly addresses the observed condition?

  1. Use the authorized evidence repository with appropriate access controls.
  2. Capture relevant enrichment version or timestamp alongside the original events.
  3. Preserve the supporting full event rows and query provenance for the investigation.
  4. Record the final query version, time filters and source table schema.

Explanation

Correct Answer

B:

Context data changes can alter downstream attribution without changing raw events. This directly addresses the requirement to preserve hunting enrichment provenance.

Incorrect Answers

A:

Hunting outputs may contain sensitive process, identity and network data. This addresses protect exported threat hunting records; it does not directly satisfy preserve hunting enrichment provenance.

C:

Aggregates alone cannot reproduce exact attacker commands or source identities. That action focuses on retain underlying hunt evidence rather than the specified need to preserve hunting enrichment provenance.

D:

Reproducible query context enables accurate interpretation of changing results. This addresses make hunting findings reproducible; it does not directly satisfy preserve hunting enrichment provenance.

Question 663

A campaign suggests attackers are using legitimate remote-management software for persistence. What is the most appropriate next action for the analyst?

  1. Define expected attacker behavior and necessary evidence before escalating a rarity alert.
  2. Verify data coverage and query conditions before declaring the hypothesis disproved.
  3. Form a testable hypothesis using remote-tool process, installation and network evidence.
  4. Document the tested inference and propose a validated custom detection.

Explanation

Correct Answer

C:

A hypothesis defines observable behaviors that a hunt can confirm or refute. This directly addresses the requirement to design a falsifiable remote-management hunt.

Incorrect Answers

A:

Rarity by itself is not malicious intent and benefits from behavioral context. This addresses avoid rarity-only malicious classification; it does not directly satisfy design a falsifiable remote-management hunt.

B:

Missing telemetry makes a negative result inconclusive. Its intended use is to interpret negative hunts under coverage gaps, whereas this case requires the analyst to design a falsifiable remote-management hunt.

D:

Hunting outcomes can mature into repeatable preventive monitoring. This addresses operationalize a successful proactive hunt; it does not directly satisfy design a falsifiable remote-management hunt.

Question 664

The analyst wants to match token-based word `powershell` in a normalized command field with efficient indexed search. Which response best meets the security operations requirement?

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

Explanation

Correct Answer

D:

Has matches terms rather than arbitrary substrings when the token boundaries fit. This directly addresses the requirement to find a complete command token.

Incorrect Answers

A:

Contains finds a sequence of characters inside larger strings. This addresses locate an embedded hostname substring; it does not directly satisfy find a complete command token.

B:

Case-insensitive comparison prevents variation in casing from hiding matching values. Its intended use is to normalize case sensitivity in a hunt, whereas this case requires the analyst to find a complete command token.

C:

Equality compares the whole value instead of fuzzy word or substring content. That action focuses on match one exact security identifier rather than the specified need to find a complete command token.

Question 665

A hunt groups one user's suspicious source IPs without counting duplicate identical addresses repeatedly. Which approach is best supported by the evidence?

  1. Use make_set on the IP column grouped by user.
  2. Apply bounded collection limits or change to an appropriately filtered event list.
  3. Use dcount on the normalized destination domain field.
  4. Retain event rows or use an ordered method rather than make_set deduplication.

Explanation

Correct Answer

A:

Make_set produces distinct collection elements. This directly addresses the requirement to list unique source IPs per user.

Incorrect Answers

B:

Very large dynamic arrays are poor substitutes for targeted event investigation. Its intended use is to constrain oversized KQL collections, whereas this case requires the analyst to list unique source IPs per user.

C:

Distinct cardinality aggregation answers a count question rather than producing a value list. That action focuses on estimate unique contacted domains rather than the specified need to list unique source IPs per user.

D:

A set removes duplicates and does not preserve full event chronology. This addresses preserve repeated command evidence; it does not directly satisfy list unique source IPs per user.

Question 666

A responder needs to identify the URLs embedded in one phishing message. Which action most directly addresses the observed condition?

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

Explanation

Correct Answer

B:

Email URL metadata identifies link indicators associated with messages. This directly addresses the requirement to inspect URLs included in phishing mail.

Incorrect Answers

A:

Click event telemetry distinguishes interaction from delivery alone. This addresses locate Safe Links user click activity; it does not directly satisfy inspect URLs included in phishing mail.

C:

Attachment metadata connects file hashes to particular email messages. That action focuses on retrieve suspicious email attachment hashes rather than the specified need to inspect URLs included in phishing mail.

D:

EmailEvents contains mail-flow detection and disposition records. This addresses identify delivered malicious emails; it does not directly satisfy inspect URLs included in phishing mail.

Question 667

The SOC needs the complete latest event row for each device, not only the latest timestamp. What is the most appropriate next action for the analyst?

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

Explanation

Correct Answer

C:

Arg_max returns fields from the row with the maximum timestamp per key. This directly addresses the requirement to retrieve each device's latest full event.

Incorrect Answers

A:

Arg_min selects row context corresponding to the first observed timestamp. This addresses identify first-seen malicious file execution; it does not directly satisfy retrieve each device's latest full event.

B:

Scalar max loses row context while arg_max can preserve it. Its intended use is to keep latest-event context with timestamp, whereas this case requires the analyst to retrieve each device's latest full event.

D:

Appropriate grouping keys preserve distinct endpoint identities. This addresses prevent cross-device latest-row conflation; it does not directly satisfy retrieve each device's latest full event.

Question 668

The hunt asks which endpoint established a network connection to an attacker-controlled IP. Which response best meets the security operations requirement?

  1. Query DeviceProcessEvents and inspect parent process fields.
  2. Query DeviceRegistryEvents for the relevant key path and action type.
  3. Query DeviceFileEvents for file creation and path evidence.
  4. Query DeviceNetworkEvents for remote address and initiating process.

Explanation

Correct Answer

D:

DeviceNetworkEvents describes endpoint network connections and their process context. This directly addresses the requirement to identify outbound endpoint network connections.

Incorrect Answers

A:

DeviceProcessEvents records process creation context and initiating process relationships. This addresses hunt for suspicious process ancestry; it does not directly satisfy identify outbound endpoint network connections.

B:

DeviceRegistryEvents exposes supported registry changes and initiating activity. Its intended use is to find registry persistence changes, whereas this case requires the analyst to identify outbound endpoint network connections.

C:

DeviceFileEvents captures supported file creation and modification activity. That action focuses on detect suspicious endpoint file placement rather than the specified need to identify outbound endpoint network connections.

Question 669

An analyst accidentally removes DeviceId with project before an entity join. Which approach is best supported by the evidence?

  1. Keep the necessary join key in the projection until correlation is complete.
  2. Use project with the desired output column order.
  3. Use extend to add the computed indicator expression.
  4. Use project-rename or a supported alias expression.

Explanation

Correct Answer

A:

Dropping key fields prematurely prevents reliable downstream joins. This directly addresses the requirement to retain KQL join keys.

Incorrect Answers

B:

Project chooses and orders the result columns. Its intended use is to control the hunting result schema, whereas this case requires the analyst to retain KQL join keys.

C:

Extend adds calculated fields without dropping the rest of the row. That action focuses on enrich hunting rows with a derived field rather than the specified need to retain KQL join keys.

D:

Column renaming clarifies output without changing the underlying observations. This addresses label hunting output fields clearly; it does not directly satisfy retain KQL join keys.

Question 670

A URL contains variable query parameters and analysts need to group by the stable hostname. Which action most directly addresses the observed condition?

  1. Investigate the encoded payload safely before assuming a plaintext substring will match.
  2. Parse the URL and group on the host component instead of the full string.
  3. Narrow the pattern and prefilter the source rows before regex evaluation.
  4. Use a controlled parse or extract expression on the command-line field.

Explanation

Correct Answer

B:

Host normalization reduces noise from differing query strings. This directly addresses the requirement to normalize malicious URL hostnames.

Incorrect Answers

A:

Encoded content is not reliably found by searching decoded words in raw text. This addresses avoid plaintext-only encoded command hunting; it does not directly satisfy normalize malicious URL hostnames.

C:

Cheap filters and bounded patterns improve query selectivity. That action focuses on optimize an expensive regex hunt rather than the specified need to normalize malicious URL hostnames.

D:

String parsing can isolate an argument value from semistructured text. This addresses extract a command-line destination; it does not directly satisfy normalize malicious URL hostnames.


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