Microsoft AB-100 Practice Test 43

Question 420

A support employee is removed from an incident-response group at 09:00; their agent’s cached retrieval results remain available until 10:00. How should the service handle a 09:20 question about restricted incidents?

Ask the employee whether they previously had group membership and proceed if they say yes.
Revalidate current entitlements at retrieval or invalidate the affected cache before returning any protected incident text.
Keep serving cached records until the next scheduled hourly index refresh.
Rely on the model to avoid repeating restricted terms while retaining the same privileged context.

Explanation

Correct Answer

Cached document relevance must not override a permission revocation that already took effect.

Incorrect Answers

Self-reported prior membership does not establish present record-level authorization.

An indexing schedule is not authorization; the employee no longer has rights to the protected incident material.

The protected content has already crossed the access boundary if it enters the model context.

Question 421

A revenue assistant receives 23 of 24 expected hourly point-of-sale files; the missing hour covers the busiest checkout period. What processing outcome is defensible?

Treat an all-green API status as proof that every expected hourly partition arrived.
Copy the preceding day’s hourly result into the gap and describe it as the current observed revenue.
Mark the reporting period incomplete, identify the missing time partition and withhold a final reconciled total until recovery.
Multiply the observed 23-hour total by 24/23 without recording an estimation method.

Explanation

Correct Answer

A missing peak period can materially bias revenue; lineage and completeness checks must precede an authoritative total.

Incorrect Answers

Transport success alone does not establish dataset completeness across the 24 required partitions.

Imputation may be labelled for analysis but cannot be represented as an actual posted sales record.

A flat adjustment assumes equal hourly sales and masks the known high-variance missing period.

Question 422

A document agent extracts an invoice due date from a scanned PDF. An auditor disputes the result. Which trace record enables a defensible correction?

Keep only the final due-date string in the model response with no reference to the input document.
Record the chatbot session title but discard the document and extraction identifiers.
Replace the source PDF once a reviewer corrects the date, without retaining prior versions.
Store the source document version, page or region reference, extraction version and reviewer correction identity.

Explanation

Correct Answer

Field-level lineage lets a reviewer locate the original evidence and understand why a revised date was accepted.

Incorrect Answers

A standalone date cannot show whether OCR misread the scan or an agent invented the value.

A session title is insufficient to reproduce the original field location or model extraction behavior.

Destroying the original prevents tracing which document value caused the mistaken due date.

Question 423

A sourcing assistant queries a vendor-qualification service. During a timeout it receives no payload, which the connector currently converts into an empty list. What is the required interface fix?

Return a typed unavailable/error state distinct from a successful verified empty vendor list.
Treat all connector timeouts as verified zero suppliers to simplify downstream prompts.
Ask the model to generate a plausible approved supplier when the list is empty.
Retry without a limit and never return an error to the procurement workflow.

Explanation

Correct Answer

An empty list means no qualified suppliers; timeout means the qualification facts are unknown, requiring different decisions.

Incorrect Answers

That collapses unknown source availability into a false business fact and can block valid sourcing.

An unavailable authoritative registry cannot support an invented supplier authorization.

Unbounded waiting can violate SLA obligations while still failing to establish supplier qualification.

Question 424

A retailer’s marketing feed stores loyalty IDs with leading zeros; another system casts them to integers. The joined data assigns purchases to the wrong member. What should be corrected?

Drop all rows whose IDs begin with zero and recompute the campaign totals.
Treat loyalty IDs as canonical strings, preserve leading zeros and validate uniqueness before joining.
Use numeric distance between IDs to select the most likely customer match.
Allow the model to infer the correct member from the size of the purchase.

Explanation

Correct Answer

Identifiers are labels, not quantities; stripping zeros can collapse or mismatch valid customer records.

Incorrect Answers

Discarding valid members would bias analytics and fail to correct the source typing contract.

Nearby numeric values have no defined relationship to membership ownership or record identity.

Purchase amount is not an identity credential and cannot repair the corrupted join key.

Question 425

A supplier catalog exposes JSON to Finance, Logistics and Support agents. A provider plans to rename `supplierId` to `accountCode` next week while consumers are deployed independently. How should the contract evolve?

Keep both names but allow them to refer to unrelated suppliers without a mapping rule.
Require all consumers to use a new shared administrator key as a substitute for schema compatibility.
Add a versioned or backward-compatible field mapping and test each consumer before retiring the old identifier.
Remove supplierId immediately and let each consumer guess the replacement from vendor display names.

Explanation

Correct Answer

A coordinated compatibility period prevents existing agents from losing the stable key used for supplier joins.

Incorrect Answers

Two properties without identity equivalence create contradictory joins rather than preserving backward compatibility.

Broader credentials do not repair field-name changes and would increase unnecessary access rights.

Name matching can collide and offers no typed migration contract for the existing required identifier.

Question 426

A fraud, service and billing agent share the same customer address. Billing corrects a postal code, but the two other agents retain old in-prompt copies. What design prevents this divergence?

Distribute a new system prompt by email whenever anyone updates a customer address.
Let every downstream agent change the customer address in its own private memory.
Choose whichever address appears most often across the three cached agents.
Expose a governed address lookup contract with update/version semantics and per-agent permitted fields.

Explanation

Correct Answer

An authoritative lookup lets all consumers receive the corrected address subject to identity and access policy.

Incorrect Answers

Manual prompt propagation cannot guarantee timely revocation and introduces unmanaged sensitive-address copies.

Independent writable copies recreate the inconsistency and bypass accountable master-data stewardship.

A majority of stale copies does not override the authenticated billing correction.

Question 427

A sales analytics agent needs customer region and category; a collections agent additionally needs outstanding balance. Both consume one account API. What should the provider do?

Implement role-scoped projections or field-level permissions on a documented account contract.
Return every field to every consumer and ask the sales model not to mention restricted balances.
Maintain two unrelated customer IDs so the sensitive financial field cannot be joined.
Make both agents use an administrator account to avoid conditional schema responses.

Explanation

Correct Answer

The shared business key can be reused without granting sales analytics access to collections-only financial fields.

Incorrect Answers

Prose restrictions do not prevent forbidden fields entering the sales model context, traces or downstream tools.

Artificially separating identity keys breaks authorized integration and does not define a clear access policy.

Shared elevated rights defeat least privilege instead of governing the field visibility at the service boundary.

Question 428

A product master is used by quote, inventory and warranty agents. A nightly release accidentally changes an item’s currency code from USD to CAD without a price conversion. Which contract test is needed?

Round all product prices to the nearest integer to absorb the currency discrepancy.
Validate currency semantics and change invariants for each SKU, rejecting a silent code change without approved conversion evidence.
Accept any three-letter ISO currency change as safe because the field type remains a string.
Update only the quoting agent’s prompt while letting inventory and warranty read the altered value.

Explanation

Correct Answer

Stable product meaning across consumers requires business-rule tests, not only syntactically valid JSON.

Incorrect Answers

Rounding cannot supply the conversion rate, effective date or approval required to change currency meaning.

Schema shape cannot prove that an unchanged price carries the same monetary value across different currencies.

Inconsistent downstream treatment of the shared currency field creates divergent financial interpretations.

Question 429

A hospital incident assistant retrieves case notes from a shared vector index. Search scores are calculated globally and the first ten passages can contain other departments’ records. What must change?

Use a larger model so it can distinguish which departments are allowed based on content tone.
Allow any record that shares the same medical topic as the requester’s query.
Apply verified row and tenant authorization during retrieval so only permitted passages can enter model context.
Show all top-ten matches to the model and redact restricted names only in the answer template.

Explanation

Correct Answer

Indexing for similarity cannot bypass the underlying source-level confidentiality and department boundary.

Incorrect Answers

A model’s interpretation of prose is not authenticated authorization for case records.

Clinical relevance is not evidence that the requesting employee has access to another department’s record.

Redaction after retrieval cannot prevent confidential passages influencing the model or being logged.

Question 430

A tenant-aware knowledge API filters the first page correctly, but a continuation token issued under a service identity returns later pages from all tenants. Which control closes the gap?

Filter only the first page because later pages are unlikely to contain the most relevant documents.
Ask the agent to stop after the first page and keep the privileged continuation endpoint available.
Treat a signed page token as permission for every tenant regardless of the caller.
Bind the continuation token to the original user, tenant and authorization scope and recheck that scope for each page.

Explanation

Correct Answer

Security trimming must persist across pagination so follow-on requests cannot widen a user’s entitlement.

Incorrect Answers

Lower relevance does not remove confidentiality obligations for later retrieved pages.

Client instructions do not repair a service endpoint that can be called directly with excessive rights.

A token without caller and scope binding becomes a cross-tenant data access bypass.

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Question 420

Explanation

Correct Answer

Incorrect Answers

Question 421

Explanation

Correct Answer

Incorrect Answers

Question 422

Explanation

Correct Answer

Incorrect Answers

Question 423

Explanation

Correct Answer

Incorrect Answers

Question 424

Explanation

Correct Answer

Incorrect Answers

Question 425

Explanation

Correct Answer

Incorrect Answers

Question 426

Explanation

Correct Answer

Incorrect Answers

Question 427

Explanation

Correct Answer

Incorrect Answers

Question 428

Explanation

Correct Answer

Incorrect Answers

Question 429

Explanation

Correct Answer

Incorrect Answers

Question 430

Explanation

Correct Answer

Incorrect Answers

Agentic AI Business Solutions Architect (AB-100) Practice Tests