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Exam Code: CCA-F

Exam Name: Claude Certified Architect - Foundations

Certification Provider: Anthropic

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Anthropic CCA-F Practice Test 29

Question 280

An engineer requests a database column rename affecting three live services and a mobile client. The team has not agreed on compatibility timing. What should Claude Code do first?

  1. Regenerate the entire schema from scratch to ensure consistency.
  2. Create a dependency-aware migration plan with rollout, backwards compatibility, owners and rollback checks before editing production code.
  3. Immediately rename the column in production and see which services fail.
  4. Silently remove the mobile client from the project scope.

Explanation

Correct Answer

B:

Multiple independently deployed consumers require coordinated sequencing. Planning exposes unresolved API and schema dependencies.

Incorrect Answers

A:

A broad rewrite increases risk and does not resolve the required compatibility window.

C:

A direct irreversible change risks breaking clients before compatible versions are deployed.

D:

Dropping a known consumer masks a real deployment dependency.

Question 281

An AI-written test passes a currency parser even when it accepts invalid three-letter codes. A bug report includes an unsupported code that succeeded. What is the best refinement?

  1. Ask for a more enthusiastic test summary without modifying any assertion.
  2. Remove the currency validator so all values become technically valid.
  3. Replace the real failure with a randomly chosen example that already passes.
  4. Turn the reported case into a failing regression fixture, correct validation and rerun relevant valid/invalid currency tests.

Explanation

Correct Answer

D:

A concrete counterexample makes the defect reproducible. Verification should cover the fix without weakening accepted legitimate inputs.

Incorrect Answers

A:

Presentation changes cannot detect or correct invalid code acceptance.

B:

Broadening acceptance masks the original contract violation rather than fixing it.

C:

A nonfailing example gives no evidence that the reported defect is resolved.

Question 282

A moderation assistant flags every access to an administrator URL as unauthorized, including successful approved maintenance. What prompt improvement best reduces false accusations?

  1. Raise severity whenever a URL contains the word admin.
  2. Require evidence of missing authorization, not merely use of a privileged endpoint, and allow an explicitly uncertain result.
  3. Tell the model that every administrative action is malicious.
  4. Omit session and role evidence to keep classification fast.

Explanation

Correct Answer

B:

A defensible criterion distinguishes behavior from an actual violation. Ambiguous cases should not be promoted to confirmed incidents.

Incorrect Answers

A:

Keyword matching is an inadequate substitute for authorization evidence.

C:

This maximizes false positives and ignores legitimate roles and approvals.

D:

Removing decisive context makes unsupported allegations more likely.

Question 283

An extraction prompt correctly handles ISO dates but often returns 2026-13-03 as a valid date. Which few-shot addition most directly addresses the failure?

  1. Ask the model to prefer aesthetically pleasing dates.
  2. Delete the date field from the output schema.
  3. Show a near-valid out-of-range month marked invalid alongside a valid neighboring date, then enforce machine validation.
  4. Add three more examples containing only valid January dates.

Explanation

Correct Answer

C:

Boundary examples teach the distinction while deterministic validation guards against continued model mistakes.

Incorrect Answers

A:

Style advice does not impose calendar validity.

B:

The user still needs the field. Omitting it avoids rather than solves the extraction defect.

D:

Easy examples do not teach the rejection boundary around month 13.

Question 284

An API tool may return either an authorized invoice or a permission-denied error. A loose JSON schema permits both fields simultaneously and callers mistakenly use leaked invoice values. What contract is safest?

  1. Use a free-text status field without constraints and trust consumers to infer meaning.
  2. Drop permission errors from the schema and return an empty authorized invoice instead.
  3. Use a discriminated success/error union with no invoice fields in the error branch and strict validation.
  4. Return every invoice field alongside an error string to help debugging.

Explanation

Correct Answer

C:

A distinct outcome tag makes contradictory payloads invalid. Unauthorized responses cannot contain protected invoice data.

Incorrect Answers

A:

Informal strings are easy to misread and cannot enforce mutually exclusive structures.

B:

A blank success hides authorization failure and can drive incorrect downstream actions.

D:

That exposes data even when access failed. Errors should not carry unauthorized content.

Question 285

A document extractor returns a malformed JSON fragment, but the source PDF is intact. A retry controller is allowed one more attempt. What should be sent back?

  1. A completely unrelated document with a new identifier.
  2. A statement that the original document is invalid without checking it.
  3. A request to invent absent fields so parsing will succeed.
  4. The same bounded source segment, precise parse/field errors and required schema, while preserving the original document identifier.

Explanation

Correct Answer

D:

Specific validation feedback gives the retry a concrete repair target and keeps results mapped to the right source.

Incorrect Answers

A:

Changing identity makes reconciliation impossible and does not correct the source-specific JSON failure.

B:

Malformed generated JSON does not prove that the input document is corrupt.

C:

Fabricated values can satisfy syntax but violate extraction accuracy.

Question 286

A batch job processes invoices. One invoice credit note requires a preceding invoice validation result, while other invoices are independent. How should work be partitioned?

  1. Submit all items with the same ID and accept whichever result arrives first.
  2. Assume validation succeeded if the dependent credit note returns quickly.
  3. Batch independent invoices using stable IDs, and keep the credit note behind its prerequisite validation.
  4. Send the credit note first because it has fewer fields.

Explanation

Correct Answer

C:

Batch parallelism is safe only across independent items. The dependency must be honored before posting the credit note.

Incorrect Answers

A:

Duplicate identifiers break reconciliation and risk mismatched financial records.

B:

Execution speed is not proof that the dependency completed correctly.

D:

Shorter work does not eliminate a required predecessor or establish the invoice balance.

Question 287

Two review agents assess a firewall change. One detects a policy bypass and the other reports no findings. A coordinator wants to close the review as clean using majority vote. What is the better policy?

  1. Approve because at least one reviewer returned no findings.
  2. Combine the two reviewers into a low-risk score because one reports no issues, without verifying the other reviewer’s claimed bypass.
  3. Remove the dissenting reviewer from the audit records.
  4. Retain the evidenced bypass finding, verify it against the policy and test case, and escalate the disagreement before release.

Explanation

Correct Answer

D:

A material supported finding is not erased by a conflicting clean opinion. Adjudication should focus on evidence.

Incorrect Answers

A:

An absence report does not disprove a concrete bypass in another review.

B:

A numerical fusion of contradictory reports does not refute a specific exploit path. The alleged firewall bypass needs direct validation before it can be dismissed or the change approved.

C:

Deleting disagreement prevents traceable remediation and creates false confidence.

Question 288

A research subagent finds the correct contract clause but returns only a summary. The coordinator must present a verifiable legal finding. What should the delegation require?

  1. Have the worker remove uncertain clauses so its summary appears definitive.
  2. Return exact document identifiers and supporting clause spans with the conclusion, or an explicit no-evidence outcome.
  3. Send the entire private chat transcript back to every worker.
  4. Let the coordinator invent clause numbers from the summary.

Explanation

Correct Answer

B:

Source-linked output lets the coordinator verify relevance and distinguish grounded findings from worker inference.

Incorrect Answers

A:

Suppressing uncertainty prevents meaningful review of disputed evidence.

C:

Bulk history does not substitute for citations and increases unnecessary disclosure.

D:

Invented citations make a correct-looking answer untraceable.

Question 289

A payment tool uses a parameter called dryRun, but its documentation does not say whether audit events or notifications still occur. How should the tool be redesigned?

  1. Define exactly which persistent side effects occur in each mode and expose a distinct preview operation if necessary.
  2. Tell the agent that dryRun always means safe without testing the implementation.
  3. Hide the notification effect because it is not a payment transfer.
  4. Combine preview and charge into one undocumented endpoint to minimize code.

Explanation

Correct Answer

A:

Tool consumers must understand consequences before invocation. An unambiguous preview avoids accidental submission.

Incorrect Answers

B:

The parameter name alone cannot establish execution semantics.

C:

A notification can still be a consequential external action and must be documented.

D:

Ambiguous action contracts invite unintended financial changes.

Question 290

An MCP search tool returns 80 valid records and then loses its paging cursor while fetching the next page. How should it report status?

  1. Delete the 80 valid results because later paging failed.
  2. Invent the missing records based on prior page patterns.
  3. Return validated records with a partial-completion status, cursor failure details and a safe retry hint.
  4. Return success with a claim that the full dataset was inspected.

Explanation

Correct Answer

C:

A partial result is neither a complete success nor invalid data. The caller can preserve evidence and repair the missing tail.

Incorrect Answers

A:

Discarding known-good data increases unnecessary work and loses evidence.

B:

Synthetic rows cannot replace authoritative search results.

D:

The missing pages make a completeness claim false.

Claude Certified Architect - Foundations (CCA-F) Practice Tests