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134 Questions & Answers

Last Update: Oct 06, 2026

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Anthropic CCA-F Practice Test 30

Question 290

A team approved a three-file Claude Code implementation task. During the edit, the agent notices an unrelated failing test in a different package and begins refactoring that package without requesting any scope change. What should its execution workflow do?

  1. Expand the work automatically because fixing all observed failures is always part of an approved edit
  2. Record the unrelated failing test only in the agent’s private scratch notes, leaving it out of the owner-facing handoff
  3. Complete and validate the authorized three-file change, record the unrelated failure separately, and obtain approval before expanding scope
  4. Change the CI test-selection configuration to exclude the unrelated package without requesting scope approval

Explanation

Correct Answer

C:

The execution plan and authorization define the boundary of the three-file task. When an unrelated package fails a test, the agent should preserve that diagnostic evidence, determine whether it blocks the agreed acceptance tests, and avoid modifying other code without an explicit scope extension. It can complete the permitted patch, rerun relevant tests and report any unresolved external failure honestly. If fixing the separate package is necessary, request permission for that additional work before touching it. This scenario tests scope control during execution, not whether trivial edits require a planning phase.

Incorrect Answers

A:

An unrelated test failure may be real, but discovering it does not grant the assistant permission to refactor another package. The approved work named three files, so expanding the change silently breaks the agreed review boundary and could introduce unrequested behavior. The test should be captured with its actual file, revision and failure output, and any later remediation should have its own scope and authorization. The important failure in this option is uncontrolled task expansion, not the mere existence of an unexpected test result.

B:

The test may be outside the authorized three-file edit, but hiding it in transient internal notes does not preserve a reliable issue record for maintainers. The workflow should finish and validate the approved change, explicitly record the unrelated failure in the appropriate issue or handoff, and request permission before starting an unrelated refactor. Separating scope does not mean suppressing observed evidence; it means not silently expanding the authorized mutation set.

D:

Silently narrowing CI coverage changes the project’s acceptance checks rather than resolving an unrelated failing test. The configuration file is also outside the approved three-file task, so this option expands mutation scope and can conceal important regressions. A safer workflow preserves the observed failure in the handoff and seeks separate authorization before modifying either the package or test policy. Validating the requested work does not grant permission to alter unrelated gates.

Question 291

A data pipeline migration involves changing a regulated retention period. What should plan mode explicitly track?

  1. Only disk capacity estimates
  2. Jurisdictional retention obligations and authoritative policy approval before editing deletion logic
  3. A shorter change commit title
  4. Use the organization’s existing retention period as the default and document a change request only after production migration

Explanation

Correct Answer

B:

Retention changes can create legal and data-loss consequences beyond technical tests. Document audit implications and rollback/hold constraints. A regulated retention period is a legal and policy obligation, not just a configurable integer. Determine applicable jurisdiction and approval before editing deletion logic, then test that retention changes affect the intended records only. Do not run data deletion until requirements are verified. Storage metrics do not establish lawful deletion timing. Commit wording does not manage compliance risk.

Incorrect Answers

A:

Disk capacity can affect the mechanics of a data migration, but it says nothing about the legal period for which records must be retained or deleted. A regulated retention change requires the governing jurisdiction, approved organizational policy and impact on existing records to be established before any deletion logic changes. Infrastructure sizing alone can leave the software technically fast yet noncompliant. The plan needs accountable policy approval and verification that new tests reflect the permitted retention window.

C:

A shorter commit title is an editorial convenience, not evidence that a proposed change to regulated data retention is lawful or safe. The migration may delete records before their required minimum holding period or retain private information beyond its permitted duration. Determine the controlling jurisdiction, data classification and approved policy first, then test deletion logic and recovery on representative fixtures. Commit message style cannot validate these obligations, even when the code passes ordinary unit tests.

D:

Using an existing retention duration as the default may look conservative, but the user's task is specifically to change a regulated period. The previous value can be legally wrong for the proposed data class or jurisdiction, and a change request made after production deletion logic runs is too late to prevent harm. Plan mode should identify the controlling regulation and approved policy owner, model affected records and migrations, and require authorization before changing irreversible retention enforcement.

Question 292

A developer begins a direct edit but discovers the requested helper function is called from ten unexpected modules. What should happen?

  1. Apply the helper-function edit immediately and schedule caller compatibility checks for the next development sprint
  2. Reassess scope and dependencies before continuing the broader change
  3. Delete conflicting call sites
  4. Apply the change to all modules without inspection

Explanation

Correct Answer

B:

Discovering ten unexpected call sites changes a purportedly small helper edit into a potentially broad interface change. Before proceeding, inspect how those modules depend on the current signature or behavior, identify compatibility risks and update the implementation and test plan accordingly. The assistant may still make a targeted edit after the impact is understood, but it should not assume unaffected callers based on the original narrow description. Record the expanded scope and require the appropriate authorized plan or review gate before mutating shared contracts.

Incorrect Answers

A:

The newly discovered callers increase the possible blast radius of what began as a narrow edit. Deferring impact checks until after implementation could break several modules that rely on the old contract. The agent should revisit the plan, inspect relevant callsites and tests, and confirm whether the originally authorized scope still covers the change. A passing local test alone would not establish cross-module compatibility.

C:

Deleting callers that do not fit the updated helper signature hides compatibility problems by removing legitimate application behavior. The discovery of ten unexpected modules is evidence that the proposed change has a broader dependency surface than initially described. Reassess the interface contract, enumerate callers and determine whether an adapter or staged migration is required before editing. Removing functions merely because they conflict with a draft helper would cause data loss or broken features without solving the underlying requirement.

D:

Changing all ten modules without inspecting how each uses the helper can cause regressions unrelated to the original task. Some callers may rely on different parameters, error handling or compatibility behavior, and automatic synchronized edits could erase valid differences. The correct response to a discovered dependency expansion is impact analysis and scoped planning, not uncontrolled multi-file mutation. Determine which call sites truly require adaptation and what tests cover them before accepting a broader change.

Question 293

A user demands a complete small CLI script with clear input and output behavior. What is a productive workflow?

  1. Write only a conceptual roadmap
  2. Break delivery into approval gates after every function
  3. Report success before code exists
  4. Implement the scoped script, test expected cases and deliver the finished file

Explanation

Correct Answer

D:

Clear bounded requirements support direct execution with internal verification. Handle malformed input and nonzero exit codes. A small CLI with specified input and output can be implemented directly, tested against valid and invalid cases, and delivered as a working artifact. Prolonged planning is not a substitute for running the script. Avoid publishing or installing globally unless requested. Microsteps add friction without improving the completed artifact. A plan is not the requested script. The user requested a working implementation.

Incorrect Answers

A:

A roadmap explains how someone might produce a script, but it does not satisfy a request for an already defined, small executable program. The user supplied clear input and output behavior, so the necessary work is implementation and observed validation rather than planning-only prose. Deliver the actual script file, test both ordinary and error inputs and disclose any untested dependency. A conceptual plan may be an appendix, but cannot replace the working deliverable the user specifically requested.

B:

Stopping for approval after each individual function adds owner interruptions without resolving an identified risk or ambiguity. A small CLI with a clear contract can be implemented and tested as one bounded task. The assistant should make meaningful design choices within the approved scope, run expected and failure cases, then deliver the file with observed results. New approval is justified only if the implementation reveals a consequential external action or a requirement that the user's original instruction did not cover.

C:

Announcing a finished script when no executable file exists creates a false deliverable. The user supplied enough input and output requirements for a bounded implementation, so the assistant should write the script, test successful and error cases and supply the actual verified artifact. A discussion of what the code would do is not equivalent to checked behavior. If an external dependency or permission blocks execution, report that limitation accurately rather than converting an unfinished task into a success claim.

Question 294

An agent plans a network firewall change with potential access lockout. What must its plan verify in advance?

  1. Run a syntax-only lint check and ask the change tool to predict reachability without proving an independent management route
  2. Require the new firewall rules to pass static syntax validation, with rollback deferred until deployment is complete
  3. Out-of-band management, ruleset backup, test window and controlled rollback
  4. Confirm the new firewall rules pass static validation and assume existing SSH access will remain usable after activation

Explanation

Correct Answer

C:

Network changes can sever the agent's own access, so recovery is a first-class requirement. Confirm target devices and change ownership. A firewall change can lock out the operator. Confirm out-of-band access, backup the current ruleset and schedule a safe test window with automatic rollback before applying new production rules. Test proposed rules before committing to production. Guessing may expose services or break applications. Display style is irrelevant to connectivity recovery. Narrative text cannot restore locked-out control.

Incorrect Answers

A:

A syntactically valid firewall policy can still disconnect the management channel or block a clinical service. Simulation can be useful, but it cannot replace a known out-of-band recovery path, current ruleset backup, operational test window and documented rollback that can be executed when access fails. The question explicitly identifies possible lockout, so review must cover the actual path used to recover control. A speculative reachability prediction alone is not adequate before a high-consequence network mutation.

B:

Syntax validation can detect malformed commands but cannot prove that operators retain management access or that the new rules preserve required traffic. A valid firewall rule can still lock out an administrator. Before a risky network change, the plan should identify an out-of-band access path, a restorable configuration, a test window and explicit rollback conditions. Static validation is one input, not the safety gate.

D:

Parsing a firewall ruleset proves its syntax, not that the administrator can reach a device once the rules become active. A valid rule may still deny the only management path. This scenario requires a pretested alternate management channel, verified backup, scheduled change window, and rollback procedure before executing the update. Treating a current SSH session as a guaranteed recovery path is unsafe because the session can be interrupted by the very policy being changed.

Question 295

A coding agent's first patch compiles but fails a unit test. What iteration pattern is appropriate?

  1. Delete the failing test immediately
  2. Refactor the whole module for clarity before isolating the cause of the failed assertion
  3. Declare success because compilation worked
  4. Read the failing assertion, revise the smallest causal change and rerun the targeted test

Explanation

Correct Answer

D:

When a narrow patch compiles but fails a unit test, begin with the failing assertion and actual execution trace to identify which behavior contradicts the specification. Make the smallest justified change to the causal code path, then rerun the targeted test on the modified revision and check for relevant regressions. Keep previous failing output as evidence of the original state. This is a bounded feedback loop; deleting the test, masking its output or refactoring unrelated files would weaken traceability without demonstrating a real fix.

Incorrect Answers

A:

Deleting the failing assertion destroys evidence that the patch changed observable behavior. Compilation proves the source can be translated or loaded, not that the expected unit-test contract still holds. Inspect the failure trace and determine whether the test expectation or implementation is wrong before changing either one. The appropriate iteration is a targeted causal fix followed by the same test and relevant regressions. Removing a failing check solely to obtain green status makes the problem less visible.

B:

A wider refactor could incidentally change the failure, but it also introduces more variables and makes the causal fix harder to identify. The first patch already compiles, so the decisive new evidence is the failing unit assertion and its expected behavior. Inspect the mismatch, make the smallest reasoned correction and rerun targeted tests. Broad cleanup belongs in a separately justified change, not as a blind reaction.

C:

Compilation only shows that the code is syntactically and structurally acceptable to the toolchain; a failing unit assertion reveals that at least one behavioral requirement remains unmet. Declaring success would conceal the observed failure and could ship a regression. Preserve the test output, inspect its expected versus actual values and make a focused correction. Retest the changed code instead of treating a green build as equivalent to a passing behavior check.

Question 296

A reviewer finds that a summarization prompt mistakes borderline policy exceptions for violations. What improvement helps?

  1. Classify an ambiguous exception as a violation whenever its triggering condition is not explicitly restated in the same sentence
  2. Replace examples with generic encouragement
  3. Ask the model to be more confident
  4. Add contrasting positive and negative examples for boundary cases, then retest

Explanation

Correct Answer

D:

Provide contrastive examples of similar policy passages where one meets the stated exception conditions and the other does not, labeling the exact sentence or event that changes the outcome. Include ambiguous cases with an uncertainty or escalation label if the source omits a necessary condition. Then test unseen passages against the same classification contract, checking that the model justifies its decision from observed text instead of memorizing keywords. This targets the documented false-positive boundary and supplies evidence for whether the revised rubric actually improves exception handling.

Incorrect Answers

A:

An exception may be defined by surrounding clauses, incorporated references or a structured policy context. Requiring the condition to appear in a single sentence could repeat the false-positive problem the prompt seeks to fix. The reviewer needs explicit criteria and contrasting examples that distinguish true violations from permitted exceptions, with a way to preserve uncertainty. Surface text proximity is not a sufficient compliance test.

B:

Generic encouragement such as be careful does not teach the summarization model what makes a borderline policy exception different from a real violation. The current errors arise at a semantic boundary, so the examples need the actual condition, counterexample and appropriate classification. Replace vague text with paired labeled cases where the triggering clause is present versus absent, then evaluate on held-out variants. Confidence language without boundary evidence is likely to perpetuate the same misclassification.

C:

Increasing the model's stated confidence does not change the boundary between a true policy violation and an allowed borderline exception. A confident but poorly specified classifier can simply make the same mistakes more assertively. Provide contrasting examples with ground-truth labels, identify the exception criteria and evaluate borderline cases against those criteria. Track false positives and corrections separately so the resulting judgment is calibrated to evidence rather than conversational certainty.

Question 297

A developer requests bug reproduction but supplies only a screenshot of a vague error. What should Claude Code obtain next?

  1. Assume the bug is a dependency problem
  2. A minimal reproducer, environment details and actual failing output
  3. Mark the bug fixed because the screenshot looks familiar
  4. Rewrite the entire application proactively

Explanation

Correct Answer

B:

Reproducible evidence is needed to distinguish competing causes. Use a bounded question if a critical input is missing. A vague screenshot cannot establish precise reproduction conditions. Gather the minimal input, environment version and actual error output to distinguish a real defect from a guessed diagnosis. The next step is to reproduce the problem from a specific environment and input, not to infer a fix from an isolated screenshot. Document unverified assumptions rather than hiding them.

Incorrect Answers

A:

A screenshot of a vague error does not establish which package, dependency or runtime path caused it. Guessing that dependencies are at fault could trigger unnecessary installations or changes and obscure the original failure. First request a reproduction command, affected revision, environment details and the complete observed error output. Then compare those facts with known failure modes and test a bounded hypothesis. A recognizable visual message is a lead for investigation, not proof of a specific root cause.

C:

Recognizing an error dialog is not equivalent to changing the application or reproducing the reported behavior. The screenshot may show the same wording for several unrelated causes, and no subsequent test has established recovery. Reporting a fix without source changes or a verified run would mislead the user and hide missing evidence. Obtain steps to reproduce, inspect actual logs and confirm the failing state before proposing a change; claim resolution only after running a relevant success test.

D:

Rewriting an entire application on the basis of one vague screenshot is disproportionate and removes the evidence needed to isolate the original bug. The image might show a transient network problem, an environment-specific exception or an outdated build; none establishes which source code must change. Obtain a minimal reproduction, version and platform information, exact error output and relevant logs first. Use those facts to localize the defect and test a bounded correction rather than introducing broad unverified changes.

Question 298

A prompt returns valid JSON but mixes account name and account owner on ambiguous records. What should the iteration target?

  1. Semantic field criteria and labeled edge cases, not JSON syntax alone
  2. Remove validation because parsing succeeds
  3. Assume any nonempty value is correct
  4. Add irrelevant prose before the JSON

Explanation

Correct Answer

A:

Syntactically valid JSON can still put the wrong customer's name into the owner field, because schema validation checks structure rather than semantic mapping to the source. Improve field definitions and provide paired labeled cases where account display names and accountable owners are easy to confuse. Then evaluate on unseen ambiguous records and compare extracted values to verified source spans. This targets the actual failure mechanism instead of repeatedly modifying punctuation or parser behavior. Evidence-backed field semantics and negative examples are the next iteration targets.

Incorrect Answers

B:

Removing JSON validation would sacrifice a useful structural gate while leaving the field-confusion bug unchanged. The output may still contain wrong owner assignments or inconsistent types, now with fewer automated checks to catch malformed records. Retain schema enforcement, then add source-grounded semantic tests that distinguish an account label from a person or entity responsible for it. Better field instructions and labeled edge cases are required because a parser cannot infer that a valid string was taken from the wrong source field.

C:

A nonempty account_owner value can be false even when its type is valid. For example, the model might copy the account name into that field after encountering a table with closely adjacent labels. Accepting every populated value would reward fabricated or misplaced ownership and corrupt downstream assignments. The validator should compare the extracted owner with relevant source spans and permit an explicit unknown when unsupported. Semantic correctness is a separate invariant from merely having a value in a required JSON property.

D:

Adding irrelevant prose before a JSON object does not teach the model which source field represents account ownership, and it may break consumers expecting strictly structured output. The observed problem is semantic ambiguity between two meaningful fields, not a shortage of introductory text. Use targeted examples that contrast account labels with actual owners, clear extraction rules and source-span validation. Changes should be evaluated against tricky unseen records; expanding the response with commentary is not a corrective mechanism for source-mapping errors.

Question 299

A code agent writes a fix that passes its own new test but breaks an existing API contract. How should QA expand?

  1. Publish because the new test is green
  2. Change expected outputs to match the bug
  3. Run existing regression tests and inspect affected public interfaces
  4. Delete the existing test suite

Explanation

Correct Answer

C:

New local success does not outweigh failures in previously supported behavior. Check downstream callers and versioned schemas. One new passing test may miss regressions in an existing API contract. Run the old suite and inspect public callers or schema compatibility before claiming the fix is complete. Public contract compatibility requires tests reflecting existing callers, including error cases and side effects, not only the new happy path. Prefer minimal changes that preserve supported semantics. Test manipulation is not a repair.

Incorrect Answers

A:

A new unit test can validate one intended behavior while missing public interfaces relied upon by callers. Here an existing API contract has demonstrably regressed, so a green new test cannot authorize publication of the change. QA should compare the prior contract with the revised behavior and execute the affected existing regression suite on the candidate revision. The release remains blocked until the breaking result is resolved or a correctly approved compatibility migration is in place.

B:

Editing test expectations to match an API regression would make a failing behavioral change appear acceptable without repairing the compatibility break. The new unit test may cover the changed code path but not existing consumers that depend on the previous contract. Review the contract, run regression and integration tests, then fix the implementation or coordinate a properly versioned breaking change. Test data and expected outputs should reflect approved behavior, not be altered merely to obtain green CI.

D:

Removing the existing test suite would hide the API contract regression that the new fix just introduced. The agent's newly written test exercises a narrow behavior and may pass even while downstream callers depend on an older response shape or status code. Preserve the established regression tests, reproduce the interface failure and update the patch until both the targeted repair and supported public behavior pass. Deleting tests improves the dashboard by discarding evidence, not by making the integration correct.

Question 300

An extraction pipeline uses three examples but systematically fails emails containing quoted replies. What iterative improvement is justified?

  1. Add three more examples of simple single-language emails while leaving quoted-reply cases absent from the prompt
  2. Add representative quoted-thread examples and validate on unseen messages
  3. Drop all quoted emails from scope
  4. Add hundreds of identical simple examples

Explanation

Correct Answer

B:

The failure mode is specific to emails that contain quoted reply history. Add representative examples where the new message and older quoted messages express different intents, labeling which spans should drive extraction or classification. Contrast with normal single-message examples and test on unseen threads so the model does not memorize one fixture. Inspect whether the prompt rules handle quotation markers, authorship and dates correctly. This is targeted feedback-driven iteration because it repairs the observed missing boundary instead of adding many unrelated examples.

Incorrect Answers

A:

More examples can improve consistency only when they cover the failure mode. The pipeline already succeeds on uncomplicated emails but fails when quoted replies alter message boundaries or speaker attribution. Adding unrelated simple cases may strengthen the existing bias rather than teach the missing distinction. Include representative quoted-thread patterns, expected extraction boundaries and contrasting negative cases so the model learns which text belongs to the current message.

C:

Excluding all quoted emails would hide the reported error by shrinking task scope rather than improving the extraction pipeline. Real customer correspondence often includes reply chains, and ignoring them may discard important user intent or cause the assistant to attribute an older statement to the current sender. Keep quoted-thread handling in scope, annotate representative examples and validate how current versus historical text is segmented. A tool that refuses a common input pattern without authorization has not solved the original requirement.

D:

Adding hundreds of identical simple messages increases prompt length but gives the model almost no new evidence about where quoted replies begin or end. The failure remains systematic because the missing example class is unchanged. Instead, build a small set of contrasting thread examples that vary quotation style, authorship and sentiment, then evaluate on held-out messages. Diverse boundary coverage is more informative than repetition of easy cases, and it avoids consuming context with redundant demonstrations.


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