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166 Questions & Answers

Last Update: Sep 26, 2026

$89.99

Microsoft AI-901 Exam Bundle gives you unlimited access to "AI-901" files. However, this does not replace the need for a .vce exam simulator. To download your .vce exam simulator click here

Microsoft AI-901 Practice Test 2

Question 10

A medical-document triage team lowers a classification threshold to catch more urgent cases. What fairness and reliability tradeoff should be checked?

  1. Delete the old threshold's test results after the update.
  2. Compare changed recall and false-positive rates for the relevant patient groups.
  3. Report only the new overall precision after lowering the threshold and infer that the change affects every patient group equally.
  4. Measure how many cases the lowered threshold escalates, without examining which escalations are incorrect.

Explanation

Correct Answer

B:

A lower decision threshold generally flags more urgent cases but can also flag more nonurgent cases. Measuring recall and false-positive rates for each affected patient group shows both the safety benefit and any uneven escalation burden.

Incorrect Answers

A:

Deleting the previous threshold’s test results removes the baseline needed to determine whether the new configuration improves urgent-case recall and at what cost. Traceable before/after results are essential when clinical escalation rules change.

C:

Overall precision measures the share of positive predictions that are correct, but it cannot establish recall of urgent cases or whether false-alarm burdens differ by patient group. Threshold changes must be checked using subgroup recall and false-positive results.

D:

An increase in escalated case volume does not tell the team how many are correct. Without confirmed diagnoses or review outcomes, it cannot quantify false alarms or whether one group receives disproportionate unnecessary escalation.

Question 11

A retail personalization model segments customers by past purchasing behavior. A proposal would infer sensitive demographic traits to maximize offer conversion. What responsible-AI gate should be applied?

  1. Assess only the aggregate click-through improvement, without checking whether inferred traits create unjustified subgroup differences.
  2. Require encryption of the purchase dataset, but exclude any evaluation of inferred sensitive-trait uses or disproportionate offer decisions.
  3. Evaluate legitimate data use and group impact; do not use inferred sensitive traits without a justified, authorized purpose.
  4. Minimize the demographic dataset to a small sample, then add inferred sensitive traits to live personalization without reviewing purpose or impact.

Explanation

Correct Answer

C:

The proposed change expands use of personal data beyond purchase history and can create sensitive profiling and unequal treatment. A valid use basis and subgroup outcome review must precede deployment.

Incorrect Answers

A:

A business metric can improve while the model treats customer groups unequally. The explicit proposal uses sensitive inferences, so the release gate also needs an authorized purpose and measured group impact.

B:

Encryption helps confidentiality, but it does not establish that deriving sensitive traits is appropriate or that offer targeting treats customers fairly. It addresses storage security, not the key use-and-impact decision.

D:

Smaller data volume does not make a sensitive inference permissible or fair. Model deployment still requires justification of the new purpose and assessment of the effect on served groups.

Question 12

An emergency-help chatbot invents evacuation instructions when it cannot find an approved safety procedure. Which release control is essential?

  1. Add a generic "not professional advice" disclaimer while permitting the agent to invent evacuation routes.
  2. Require answers to quote a policy-looking sentence, but do not verify that the source is the approved emergency document.
  3. Require verified emergency guidance and a safe refusal or escalation when that guidance is unavailable.
  4. Disable responses that express uncertainty while keeping the ungrounded answers.

Explanation

Correct Answer

C:

Safety-critical guidance needs verified current policy evidence. If the search or policy source cannot be established, the bot must abstain or direct the user to an appropriate emergency channel instead of improvising potentially dangerous routes.

Incorrect Answers

A:

A disclaimer may clarify limits but does not prevent the bot from issuing unsupported evacuation routes. The risk is concrete unsafe instructions when authoritative guidance is missing; it needs a controlled refusal and referral path.

B:

A policy-looking sentence can be obsolete, unrelated or invented by the generator. The application must verify the actual approved emergency document and its version rather than accepting the appearance of a citation.

D:

Removing expressions of uncertainty would make unsupported directions appear definitive. That worsens the safety failure rather than addressing the missing authoritative procedure.

Question 13

A billing assistant calls a payment-update API. The call times out after submission, so the client does not know whether the update committed. Select TWO controls that support safe recovery.

  1. Use a stable idempotency key and check the authoritative transaction status before retrying.
  2. Record the uncertain state and offer a controlled escalation if the system cannot reconcile it.
  3. Tell the customer the payment succeeded because the request left the browser.
  4. Retry the original payment identifier but declare success without reconciling its committed state.
  5. Retry immediately using a new transaction identifier on every attempt.

Explanation

Correct Answers

A:

A stable idempotency key lets the payment service recognize the same intended operation on retry rather than create another charge. Querying the authoritative transaction status distinguishes a committed write from a request that failed before persistence.

B:

A timeout can leave the client unable to determine whether a payment committed. Recording this unresolved state and escalating after bounded reconciliation avoids falsely reporting success or failure to the customer.

Incorrect Answers

C:

A request leaving the browser proves only transmission was attempted. The server may have rejected it, processed it or committed it before the response was lost, so a confirmation must come from the payment system of record.

D:

Reusing a transaction identifier may support duplicate prevention when the API implements idempotency, but an unverified “success” message still misrepresents the outcome. The operation status requires authoritative reconciliation.

E:

A fresh identifier can make each retry a separate payment under common transaction APIs. If the first request was committed despite its timeout, creating new operations risks charging the customer multiple times.

Question 14

An AI-assisted intake form handles standard uploads successfully but fails when applicants send an empty, corrupt or oversized attachment. Which testing improvement addresses this?

  1. Measure only the fraction of uploads that reach the model, without checking error branches.
  2. Add negative and boundary-case tests with verified error and fallback outcomes.
  3. Test only the most common valid file until the service is published.
  4. Retry corrupted documents as plain text without validating whether the required fields can be recovered.

Explanation

Correct Answer

B:

Boundary tests deliberately submit corrupt, oversized and missing-content attachments, then assert the exact error and recovery behavior. These cases ensure the system cannot silently invent required form fields when valid source evidence is absent.

Incorrect Answers

A:

A transport-level acceptance count says a file reached an endpoint but not whether the parser correctly rejected empty pages, corruption or oversize conditions. It provides no evidence that fallback behavior protects the application.

C:

Only testing successful normal forms repeats a path already known to work. Real users will submit malformed or incomplete files, and untested error branches may create incorrect eligibility determinations.

D:

Blindly converting corrupted files to a different text input path can discard layout, required dates or numerical evidence. A fallback parser still needs completeness and field-validation checks before accepting the application.

Question 15

A new model deployment increases the 95th-percentile response time of a clinical triage workflow beyond its safety limit. What should the release gate assess?

  1. Measure the time to first token but not the completion time needed for the triage decision.
  2. Use average latency measured only when the system has fewer than ten concurrent requests.
  3. Only the average latency across a small series of short prompts.
  4. Actual tail latency under representative workload and a safe operational fallback.

Explanation

Correct Answer

D:

The release gate must compare observed p95 end-to-end decision time with the clinical limit and test what happens when it is exceeded. A safe fallback ensures urgent cases are handled even when the new model is slow.

Incorrect Answers

A:

Time to first token measures when partial text begins, not when a usable clinical result is available. If the response finishes after the safety deadline, early display cannot satisfy the workflow’s end-to-end limit.

B:

The average under very light concurrency does not represent the ninety-fifth-percentile delays during actual triage traffic. Queuing and longer patient inputs may create severe tail latency despite attractive lab means.

C:

A mean over a few short prompts can conceal the slowest cases and omit the safety fallback entirely. The stated failure is a p95 limit breach, which requires high-percentile measurement with representative input and load.

Question 16

A purchasing agent reads last night's inventory snapshot, but the quantities may have changed during a morning shipment. What safety boundary is required?

  1. Recheck current stock and policy at the authoritative inventory service before committing a purchase.
  2. Assume the snapshot is current because its schema matches the inventory API.
  3. Use the snapshot if its refresh timestamp is within the scheduled overnight window, without checking movements since that refresh.
  4. Ask the model to infer how many units shipped from historical patterns.

Explanation

Correct Answer

A:

Inventory snapshots are historical evidence, not an authoritative commitment of currently reservable stock. Querying the current inventory source before a purchase prevents the model from authorizing an order based on units already shipped or reserved.

Incorrect Answers

B:

A compatible JSON schema only establishes that fields such as `availableQuantity` can be parsed. It does not make last night’s values current after the morning shipment.

C:

An on-schedule refresh can still be stale after an unscheduled morning shipment or stock reservation. Timestamp validation establishes when the snapshot was captured, not current quantity at the inventory system of record.

D:

A probabilistic estimate based on past shipping patterns may be useful for planning but cannot verify the actual on-hand amount for this item. Committing a purchase requires current source-of-record confirmation.

Question 17

A form-reading model sometimes confuses $18.50 with $185.00 and the result would flow to accounts payable. What verification is most important?

  1. Accept the extracted value whenever the model's prose explanation sounds certain.
  2. Compare the extracted amount to the original document span and apply a numeric plausibility check.
  3. Run OCR twice and accept whichever pass produces the larger invoice amount.
  4. Skip field validation if the extraction response is syntactically valid JSON.

Explanation

Correct Answer

B:

Linking the extracted amount to its location on the invoice allows comparison of $18.50 with the actual glyphs. Numeric plausibility and total reconciliation can flag a tenfold discrepancy before it reaches accounts payable.

Incorrect Answers

A:

A confident explanation can accompany an OCR error: the parser may have read a decimal separator incorrectly. The payable amount must be checked against the actual source region rather than the persuasiveness of the text.

C:

Two OCR passes can repeat the same decimal mistake, and preferring the larger amount has no accounting justification. Source-aligned evidence and numerical validation are needed to choose the correct value.

D:

Valid JSON proves only that the extraction payload follows a syntax rule. A field can still contain $185.00 instead of $18.50 and create an incorrect payable transaction.

Question 18

A live travel support agent loses access to its approved policy search service. Which response is reliable?

  1. Present a cached policy as current without displaying its version or verifying its effective period.
  2. Keep invoking the failing search service indefinitely with no user-facing status.
  3. Quote an old policy from the model's general recollection as the current binding rule.
  4. State that current policy evidence is unavailable and provide a controlled retry or handoff.

Explanation

Correct Answer

D:

The correct response distinguishes an unavailable evidence service from a verified policy result. A controlled retry or human handoff avoids fabricating citations while giving the customer a legitimate path to obtain current advice.

Incorrect Answers

A:

A cached rule may be useful as clearly dated reference material, but it cannot be asserted as current when its effective status is unverified. Travel reimbursements can change, so source version is part of correctness.

B:

Unlimited silent retries keep the caller waiting without establishing that policy retrieval will recover. The client needs bounded failure handling and a truthful user-facing status rather than a hidden dependency loop.

C:

A language model can recall a plausible obsolete travel rule without access to the current approved policy. That memory is not authoritative evidence of the binding reimbursement limit.

Question 19

A predicted account-risk label could trigger irreversible account closure. Which design best contains model-error harm?

  1. Require a very high classification confidence threshold but skip independent authorization checks for closure.
  2. Route all high-confidence closure predictions to an automated closure tool without checking prohibited case types.
  3. Require a detailed AI-written closure explanation and treat it as a sufficient approval artifact for the account service.
  4. Require an independent policy and authorization check before the closure service commits the change.

Explanation

Correct Answer

D:

The classification may inform a review queue, but the policy and permission service must separately approve the case before it is permanently closed. This isolates model error from irreversible account-state changes.

Incorrect Answers

A:

High confidence reduces neither the need for case-specific business authorization nor the risk of a wrong irreversible outcome. The transaction boundary requires an independent policy gate.

B:

Automated closure without checking prohibited case categories can violate the organization’s business rules despite apparently strong predictions. The account service must validate the specific record and policy before any mutation.

C:

An explanation can help reviewers understand a recommendation but does not authenticate approval. An irreversible closure still requires verified authorization beyond generated language.

Question 20

A generative tool assembles a shell command from a customer message. An attacker includes special characters intended to delete files. Which safeguard applies?

  1. Add a strict system instruction to reject destructive commands, but continue executing shell strings assembled from customer text.
  2. Apply a keyword blacklist to the generated shell text but permit arbitrary command structure.
  3. Keep natural-language content out of executable syntax; validate typed parameters against an allowlisted operation.
  4. Execute the model's command whenever it has generated valid-looking shell syntax.

Explanation

Correct Answer

C:

Untrusted customer text should remain data, never executable command syntax. A narrow allowlisted tool with validated parameters and independent permission checks prevents special characters from changing the operation performed on the host.

Incorrect Answers

A:

A system instruction is useful guidance, but an injection can still produce executable shell metacharacters when arbitrary strings run with the tool privilege. A typed, allowlisted operation enforced outside the model is needed to constrain execution.

B:

Keyword blacklists are fragile because dangerous operations can be expressed using quoting, substitutions and alternate syntax. Restricting the available command operations and validating typed parameters is a stronger execution boundary.

D:

Syntactically well-formed shell commands can still delete files or access unauthorized paths. Valid syntax says nothing about the caller’s intent, allowed scope or business authorization.


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