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AB-900 Premium File: 99 Questions & Answers

Last Update: Oct 06, 2026

AB-900 PDF Study Guide: 314 Pages

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Microsoft AB-900 Practice Test 32

Question 310

An organization needs to justify why a Copilot workflow handles sensitive customer records. What should the administrator configure?

  1. Add human approval and a recoverable operational design.
  2. Reduce the tool's returned fields to the minimum required.
  3. Provide transparent disclosure of AI assistance and limitations.
  4. Document the lawful purpose, retention and access design with privacy stakeholders.

Explanation

Correct Answer

D:

Purpose limitation and governance constrain sensitive processing. This directly addresses accountable processing of customer information.

Incorrect Answers

A:

Human control mitigates high-impact automation risks. It would support accountable irreversible account deletion, not the stated accountable processing of customer information.

B:

Data minimization limits personal data processing for the task. Its purpose is least-data disclosure by an AI tool; the specified need is accountable processing of customer information.

C:

Responsible AI transparency avoids misleading users about the system. It would support informed AI output interpretation, not the stated accountable processing of customer information.

Question 311

An internal search result exposes a file with an Anyone sharing link. Which option is the BEST solution?

  1. Review and remove unauthorized anonymous sharing on that file.
  2. Review relevant Purview AI activity explorer events.
  3. Audit and restrict group permissions on the source.
  4. Check effective user site permissions and source availability.

Explanation

Correct Answer

A:

Anonymous links may create an unintended access path beyond tenant membership. This directly addresses closure of public sharing exposure.

Incorrect Answers

B:

AI activity telemetry records supported user interactions and classifications. This helps with observational AI usage evidence instead of the required closure of public sharing exposure.

C:

Access control defects are not fixed by changing a prompt alone. The action is relevant to stopping unintended broad directory access rather than closure of public sharing exposure.

D:

A user cannot ground answers in inaccessible tenant files. This helps with diagnosing absent authorized source instead of the required closure of public sharing exposure.

Question 312

A security reviewer wants to know why two colleagues receive different Copilot summaries for the same prompt. Which Microsoft 365 capability is MOST appropriate?

  1. Correct the underlying SharePoint access and sharing permissions.
  2. Compare each user's effective content access and available grounding context.
  3. Keep SharePoint permissions restrictive and rely on security-trimmed retrieval.
  4. Allow Copilot to ground in the user's authorized Microsoft Graph content.

Explanation

Correct Answer

B:

Security trimming and individual context yield different retrieved evidence. This directly addresses explaining user-specific Copilot answers.

Incorrect Answers

A:

Copilot can surface already-accessible overshared content. That addresses eliminating an inherited oversharing root cause, whereas the current case requires explaining user-specific Copilot answers.

C:

Copilot respects effective user access rather than granting new file rights. That addresses denying retrieval of an inaccessible source, whereas the current case requires explaining user-specific Copilot answers.

D:

Graph uses accessible work context when building grounded responses. It is used for summarizing accessible mailbox content; this scenario calls for explaining user-specific Copilot answers.

Question 313

An employee receives a plausible answer unsupported by any approved enterprise source. Which approach solves the stated need?

  1. Remove the contractor's unintended source permissions and overshared links.
  2. Review connector indexing and ACL mappings for its content.
  3. Ask for source verification and handle insufficient evidence explicitly.
  4. Apply normal file permissions to govern available work data.

Explanation

Correct Answer

C:

Grounding checks help distinguish actual retrieved facts from generated claims. This directly addresses verification against authorized evidence.

Incorrect Answers

A:

The relevant access risk comes from content sharing and identity authorization. Its purpose is preventing unapproved contractor discovery; the specified need is verification against authorized evidence.

B:

Correctly mapped access lists are needed for secure external content retrieval. It would support connector-grounded security trimming, not the stated verification against authorized evidence.

D:

Microsoft 365 Copilot accesses work content under the user's entitled resource scope. It would support ordinary user-scoped work grounding, not the stated verification against authorized evidence.

Question 314

An administrator wants staff to recognize the classification of files they create for Copilot-assisted workflows. Which Microsoft 365 capability is MOST appropriate?

  1. Preserve encryption and rights-based access so retrieval is limited.
  2. Permit approved retrieval subject to its label and user permissions.
  3. Configure the relevant Purview DLP or label-processing AI protection policy.
  4. Publish appropriate Purview sensitivity label policies.

Explanation

Correct Answer

D:

Labels provide consistent handling guidance for sensitive work content. This directly addresses end-user classification of source data.

Incorrect Answers

A:

Encrypted label permissions constrain eligible readers and service processing. This helps with enforcement of protected document rights instead of the required end-user classification of source data.

B:

An informational label does not imply universal exclusion from Copilot. The action is relevant to authorized summary of a labeled source rather than end-user classification of source data.

C:

Supported Copilot data controls can restrict processing of classified items. This helps with source-specific AI processing restriction instead of the required end-user classification of source data.

Question 315

Users with accessibility needs must be able to interact meaningfully with the AI service. Which approach solves the stated need?

  1. Incorporate inclusiveness and accessibility requirements into the experience.
  2. Evaluate fairness and mitigate biased model outcomes.
  3. Document transparent model behavior and provide meaningful explanation.
  4. Test reliability and safety under edge cases and failures.

Explanation

Correct Answer

A:

Inclusive design helps avoid excluding people because of disabilities or circumstances. This directly addresses usable AI experience across abilities.

Incorrect Answers

B:

Responsible AI fairness focuses on unjustified disparate treatment. That addresses nondiscriminatory model behavior, whereas the current case requires usable AI experience across abilities.

C:

Transparency helps users understand AI use, evidence and limitations. It is used for intelligible AI decision context; this scenario calls for usable AI experience across abilities.

D:

Robustness evaluation reduces harmful surprises and inconsistent operation. That addresses dependable operation under atypical inputs, whereas the current case requires usable AI experience across abilities.

Question 316

A vendor's recommendation engine makes an opaque decision and nobody owns incident handling. Which Microsoft 365 capability is MOST appropriate?

  1. Minimize personal-data access and apply privacy/security controls.
  2. Assign accountable owners and a defined escalation process.
  3. Require a human authorization before the irreversible payment.
  4. Inspect linked source evidence and verify the claim before relying on it.

Explanation

Correct Answer

B:

Accountability identifies responsible humans for monitoring and correction. This directly addresses clear ownership of AI failures.

Incorrect Answers

A:

Privacy principles reduce unnecessary processing and disclosure. It would support protection of sensitive personal information, not the stated clear ownership of AI failures.

C:

Accountability retains control of high-impact actions with authorized decision-makers. It would support human oversight of consequential action, not the stated clear ownership of AI failures.

D:

Evidence checking supports responsible use of generated assertions. Its purpose is verified high-stakes summary accuracy; the specified need is clear ownership of AI failures.

Question 317

A monitoring team wants to know whether recent agent interactions show injection attempts or policy evasion. Which approach solves the stated need?

  1. Limit task scope and ensure data is not treated as higher-priority commands.
  2. Reduce backend tool rights and require authenticated authorization.
  3. Review supported AI activity and safety telemetry for suspicious interactions.
  4. Treat retrieved page instructions as untrusted data and enforce tool permissions.

Explanation

Correct Answer

C:

Monitoring enables investigation of attempts to misuse the assistant. This directly addresses evidence of AI abuse attempts.

Incorrect Answers

A:

Boundaries between content and instructions mitigate prompt-injection effects. The action is relevant to safe handling of adversarial document text rather than evidence of AI abuse attempts.

B:

Prompt wording alone cannot secure a powerful tool connection. This helps with enforceable permission checks for agent actions instead of the required evidence of AI abuse attempts.

D:

Source text must not override trusted policy or backend authorization. This helps with resistance to malicious source instructions instead of the required evidence of AI abuse attempts.

Question 318

Compliance investigators must collect supported agent interactions for a regulatory matter. Which Microsoft 365 capability is MOST appropriate?

  1. Maintain the applicable eDiscovery hold on the source records.
  2. Configure applicable Purview retention controls for Copilot interactions.
  3. Apply approved data lifecycle deletion policies and access rights.
  4. Use Purview eDiscovery search for supported AI interactions.

Explanation

Correct Answer

D:

Case-based content search preserves and locates relevant AI records. This directly addresses discovery of AI interaction evidence.

Incorrect Answers

A:

A Copilot summary does not remove legal preservation requirements on underlying content. That addresses ongoing legal preservation of source evidence, whereas the current case requires discovery of AI interaction evidence.

B:

Retention policies govern covered interaction records for required periods. It is used for mandated AI conversation retention; this scenario calls for discovery of AI interaction evidence.

C:

Content lifecycle operates on source records independent of Copilot summaries. That addresses policy-based deletion of expired source content, whereas the current case requires discovery of AI interaction evidence.

Question 319

Copilot responds to a question unsupported by any accessible document with confident invented details. Which approach solves the stated need?

  1. Require an explicit insufficient-evidence response and source validation.
  2. Use an authorized live business data connection for current values.
  3. Govern and identify the approved canonical policy source.
  4. Supply or verify source citations from authorized retrieved content.

Explanation

Correct Answer

A:

Grounding uncertainty prevents fabricated specific claims. This directly addresses safe answer when evidence is absent.

Incorrect Answers

B:

Static documents may not represent rapidly changing transactional state. It would support current operational data rather than stale export, not the stated safe answer when evidence is absent.

C:

Source stewardship reduces grounding in obsolete versions. Its purpose is a current authoritative document reference; the specified need is safe answer when evidence is absent.

D:

Citations allow checking statements against evidence. It would support traceable grounded policy statement, not the stated safe answer when evidence is absent.

Question 320

An application requires an immediate authenticated workflow execution rather than retrieving indexed text. Which Microsoft 365 capability is MOST appropriate?

  1. Configure supported connector synchronization for relevant updates.
  2. Use a permissioned live API or tool rather than only a search connector.
  3. Configure an approved Graph connector with accurate item ACL mappings.
  4. Repair connector ACL ingestion and reindex the affected content.

Explanation

Correct Answer

B:

Runtime operations are distinct from search grounding over indexed material. This directly addresses live action against a business system.

Incorrect Answers

A:

Connector refresh keeps indexed items aligned with source changes. This helps with up-to-date external search index instead of the required live action against a business system.

C:

Indexed external items must carry permissions so results can be security trimmed. This helps with secure retrieval of connected external content instead of the required live action against a business system.

D:

Missing ACL mapping can lead to unintended search exposure. The action is relevant to corrected external item authorization rather than live action against a business system.


Microsoft 365 Copilot and Agent Administration Fundamentals (AB-900) Practice Tests

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