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Exam Code: CCA-F

Exam Name: Claude Certified Architect - Foundations

Certification Provider: Anthropic

Anthropic CCA-F Questions & Answers

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Anthropic CCA-F Practice Test 24

Question 230

A new region for user data has several deployment choices with legal constraints. Which execution or planning approach is justified?

  1. Replicate data everywhere to avoid a region choice.
  2. Disable location logging to avoid evidence of noncompliance.
  3. Move customer data to the cheapest region immediately.
  4. Assess tradeoffs in plan mode before changing infrastructure.

Explanation

Correct Answer

D:

Data-residency architecture requires comparing permitted regions, processing locations and operational dependencies against legal constraints. Moving data solely for price can create noncompliant replicas and irreversible exposure before ownership and retention are resolved. By contrast, a cost-only decision ignores residency restrictions. Financial savings cannot establish that a cloud region satisfies residence and transfer obligations. Suppressing records does not make placement lawful. Suppressing records removes evidence needed for audit but leaves the actual data movement unchanged.

Incorrect Answers

A:

Broad distribution worsens privacy and governance risks. Unbounded replication makes it harder to enforce permitted storage locations and deletion requirements. A new region for user data has several deployment choices with legal constraints. Instead, assess tradeoffs in plan mode before changing infrastructure.

B:

Suppressing records does not make placement lawful. Suppressing records removes evidence needed for audit but leaves the actual data movement unchanged. A new region for user data has several deployment choices with legal constraints. Instead, assess tradeoffs in plan mode before changing infrastructure.

C:

A cost-only decision ignores residency restrictions. Financial savings cannot establish that a cloud region satisfies residence and transfer obligations. A new region for user data has several deployment choices with legal constraints. Instead, assess tradeoffs in plan mode before changing infrastructure.

Question 231

An architecture audit needs to inspect a database schema but an agent attempts to drop tables. Which execution or planning approach is justified?

  1. Assume any command described as diagnostics is safe.
  2. Grant the exploring agent admin privileges for convenience.
  3. Keep exploration read-only until change is explicitly authorized.
  4. Run DROP TABLE inside read-only architectural exploration.

Explanation

Correct Answer

C:

Schema inspection is a read-only discovery task; statements that drop or alter tables create production side effects. A diagnostic label does not make a destructive SQL command safe; use restricted permissions until an approved change exists. By contrast, DDL would destructively change the audited system. Dropping a table changes the schema and stored data, invalidating the supposedly passive audit. The role requires inspection, not mutation authority. Administrator-level access gives a navigator powers unrelated to dependency inspection.

Incorrect Answers

A:

Operation semantics matter more than its label. Commands named diagnose or inspect can still contain writes; actual SQL verbs determine side effects. A diagnostic label does not make a destructive SQL command safe; use restricted permissions until an approved change exists.

B:

The role requires inspection, not mutation authority. Administrator-level access gives a navigator powers unrelated to dependency inspection. A diagnostic label does not make a destructive SQL command safe; use restricted permissions until an approved change exists. An architecture audit needs to inspect a database schema but an agent attempts to drop tables.

D:

DDL would destructively change the audited system. Dropping a table changes the schema and stored data, invalidating the supposedly passive audit. An architecture audit needs to inspect a database schema but an agent attempts to drop tables. Instead, keep exploration read-only until change is explicitly authorized. A diagnostic label does not make a destructive SQL command safe; use restricted permissions until an approved change exists.

Question 232

Exploration reveals a shared dependency not known when the original implementation plan was drafted. Which TWO measures should be taken before editing? (SELECT TWO)

  1. Start editing every dependent service simultaneously.
  2. Proceed with the original implementation plan unchanged.
  3. Update the affected dependency graph.
  4. Ignore dependency information until final testing.
  5. Revise authorized implementation steps before edits.

Explanation

Correct Answers

C:

Discovery of a new shared dependency can invalidate the original edit order and the set of affected consumers. Revising the dependency map and approved steps avoids silently breaking interfaces that were not in the initial scope. By contrast, the discovered dependency invalidates its sequencing. Newly identified consumers may break if code is edited according to outdated assumptions. Unreviewed scope expansion adds integration risk. A simultaneous rollout can fail because downstream contract changes need sequencing and owner agreement.

E:

Discovery of a new shared dependency can invalidate the original edit order and the set of affected consumers. Revising the dependency map and approved steps avoids silently breaking interfaces that were not in the initial scope. By contrast, unreviewed scope expansion adds integration risk. A simultaneous rollout can fail because downstream contract changes need sequencing and owner agreement. Fixing late may cause avoidable contract failures. Waiting until final tests defers a known dependency risk to the most expensive discovery point.

Incorrect Answers

A:

Unreviewed scope expansion adds integration risk. A simultaneous rollout can fail because downstream contract changes need sequencing and owner agreement. Revising the dependency map and approved steps avoids silently breaking interfaces that were not in the initial scope. Exploration reveals a shared dependency not known when the original implementation plan was drafted. Instead, update the affected dependency graph and revise authorized implementation steps before edits.

B:

The discovered dependency invalidates its sequencing. Newly identified consumers may break if code is edited according to outdated assumptions. Exploration reveals a shared dependency not known when the original implementation plan was drafted. Instead, update the affected dependency graph and revise authorized implementation steps before edits. Revising the dependency map and approved steps avoids silently breaking interfaces that were not in the initial scope.

D:

Fixing late may cause avoidable contract failures. Waiting until final tests defers a known dependency risk to the most expensive discovery point. Discovery of a new shared dependency can invalidate the original edit order and the set of affected consumers. Exploration reveals a shared dependency not known when the original implementation plan was drafted. Instead, update the affected dependency graph and revise authorized implementation steps before edits.

Question 233

A fully specified small refactor has already passed the required review. Which execution or planning approach is justified?

  1. Generate a third architecture plan before a one-file edit.
  2. Skip validation since planning is complete.
  3. Defer implementation until an unrelated road map is complete.
  4. Move to execution rather than generating another plan.

Explanation

Correct Answer

D:

After a focused refactor's acceptance criteria and design are approved, code modification and tests produce the next useful evidence. Generating additional planning documents does not validate behavior and can delay a straightforward one-file fix. By contrast, review has already approved the bounded approach. Repeating design review adds no new evidence when stakeholders have already approved the edit. No blocking design uncertainty remains. The unrelated roadmap has no dependency on this bounded implementation step.

Incorrect Answers

A:

Review has already approved the bounded approach. Repeating design review adds no new evidence when stakeholders have already approved the edit. A fully specified small refactor has already passed the required review. Instead, move to execution rather than generating another plan.

B:

Planning does not replace regression tests. Reviewed requirements still need behavioral checks after the source file is modified. Generating additional planning documents does not validate behavior and can delay a straightforward one-file fix. A fully specified small refactor has already passed the required review.

C:

No blocking design uncertainty remains. The unrelated roadmap has no dependency on this bounded implementation step. Generating additional planning documents does not validate behavior and can delay a straightforward one-file fix. Instead, move to execution rather than generating another plan.

Question 234

Changes could affect shared contracts owned by three product teams. Which execution or planning approach is justified?

  1. Gather stakeholders and analyze impacts in plan mode before editing.
  2. Force a production deployment to discover owners.
  3. Ask only the current implementer to guess contract consumers.
  4. Change all shared contracts and notify owners afterward.

Explanation

Correct Answer

A:

Shared contracts propagate changes to independently deployed products and therefore require consumer and owner coordination. Plan the rollout and compatibility checks before mutation; post-deployment notification cannot prevent downstream protocol failures. By contrast, this bypasses the teams responsible for compatibility. Downstream product teams would first learn about incompatible contracts after their clients fail. Cross-team impact requires broader evidence. An implementer alone may not know every deployed client and service-level promise.

Incorrect Answers

B:

Operational changes are not a safe dependency discovery method. A production breakage is not an appropriate way to identify contractual dependencies. Shared contracts propagate changes to independently deployed products and therefore require consumer and owner coordination. Changes could affect shared contracts owned by three product teams.

C:

Cross-team impact requires broader evidence. An implementer alone may not know every deployed client and service-level promise. Shared contracts propagate changes to independently deployed products and therefore require consumer and owner coordination. Instead, gather stakeholders and analyze impacts in plan mode before editing.

D:

This bypasses the teams responsible for compatibility. Downstream product teams would first learn about incompatible contracts after their clients fail. Changes could affect shared contracts owned by three product teams. Instead, gather stakeholders and analyze impacts in plan mode before editing. Shared contracts propagate changes to independently deployed products and therefore require consumer and owner coordination.

Question 235

A refactoring assistant keeps altering import order despite broad prose formatting instructions. What is the most reliable next refinement?

  1. Make broad unrelated refactors to normalize every import.
  2. Provide two or three exact input-output examples.
  3. Add another generic instruction to respect style.
  4. Disable formatting checks so altered imports pass.

Explanation

Correct Answer

B:

Concrete before-and-after import examples show exactly how the formatter should preserve ordering in the target repository. A generic respect-style instruction leaves the model free to invent transformations that violate an otherwise stable import policy. By contrast, the same vague rule did not fix the concrete import order. Another vague prose instruction does not tell the model which import ordering is expected. Suppressing detection does not correct generated output. Removing formatter checks can make broken output look acceptable without fixing the generator.

Incorrect Answers

A:

The requested correction concerns targeted examples. Global refactoring changes unrelated modules when the request concerns a narrow style transformation. A generic respect-style instruction leaves the model free to invent transformations that violate an otherwise stable import policy. Instead, provide two or three exact input-output examples.

C:

The same vague rule did not fix the concrete import order. Another vague prose instruction does not tell the model which import ordering is expected. A refactoring assistant keeps altering import order despite broad prose formatting instructions. Instead, provide two or three exact input-output examples.

D:

Suppressing detection does not correct generated output. Removing formatter checks can make broken output look acceptable without fixing the generator. A refactoring assistant keeps altering import order despite broad prose formatting instructions. Instead, provide two or three exact input-output examples.

Question 236

A calculator returns the wrong result on null input and a fix could break rounding. What is the most reliable next refinement?

  1. Add representative failing and boundary tests before implementation.
  2. Test only the valid integer path.
  3. Change null handling first without tests.
  4. Ignore the existing rounding invariant because null is special.

Explanation

Correct Answer

A:

Boundary tests must exercise null inputs and known rounding behavior together because a patch can affect both branches. A focused regression suite distinguishes a genuine null-handling repair from a change that silently degrades numeric accuracy. By contrast, a plausible patch may change rounding or boundary behavior. The patch may repair one null case while changing rounding semantics for ordinary numeric inputs. The failure and regressions involve null and numeric boundaries. Only the happy path would run, leaving both the reported error and the boundary regression untested.

Incorrect Answers

B:

The failure and regressions involve null and numeric boundaries. Only the happy path would run, leaving both the reported error and the boundary regression untested. A calculator returns the wrong result on null input and a fix could break rounding.

C:

A plausible patch may change rounding or boundary behavior. The patch may repair one null case while changing rounding semantics for ordinary numeric inputs. A calculator returns the wrong result on null input and a fix could break rounding. Instead, add representative failing and boundary tests before implementation.

D:

The fix must preserve previously correct calculations. Existing rounding invariants remain contractual requirements even when adding a null branch. A focused regression suite distinguishes a genuine null-handling repair from a change that silently degrades numeric accuracy. Instead, add representative failing and boundary tests before implementation.

Question 237

An agent says a date parser is fixed but still mishandles leap days. What is the most reliable next refinement?

  1. Remove leap-day tests as unusual edge cases.
  2. Provide the exact failing input and expected output.
  3. Change date formatting alone to conceal wrong parsing.
  4. Ask the agent to improve date parsing generally.

Explanation

Correct Answer

B:

A leap-day parser bug is falsifiable with a specific input, expected normalized output and assertion. Without that counterexample, a fluent explanation of date parsing provides no evidence that leap-year logic was fixed. By contrast, vague feedback cannot locate the leap-day defect. General encouragement does not provide the leap-year date pair necessary to reproduce the bug. Presentation does not establish calendar validity. Changing display format may leave February 29 improperly accepted or rejected inside the parser.

Incorrect Answers

A:

The exact reported case is part of correctness. Deleting the failure case gives false confidence by removing the exact acceptance criterion. A leap-day parser bug is falsifiable with a specific input, expected normalized output and assertion. Instead, provide the exact failing input and expected output.

C:

Presentation does not establish calendar validity. Changing display format may leave February 29 improperly accepted or rejected inside the parser. An agent says a date parser is fixed but still mishandles leap days. Instead, provide the exact failing input and expected output.

D:

Vague feedback cannot locate the leap-day defect. General encouragement does not provide the leap-year date pair necessary to reproduce the bug. An agent says a date parser is fixed but still mishandles leap days. Instead, provide the exact failing input and expected output.

Question 238

A new cache invalidation feature has unstated consistency and time-to-live constraints. What is the most reliable next refinement?

  1. Ask for irrelevant UI colors before discussing cache semantics.
  2. Assume a default TTL and implement immediately.
  3. Ask targeted design questions before changing code.
  4. Rely on caching library defaults as the product contract.

Explanation

Correct Answer

C:

Cache invalidation semantics depend on required staleness tolerance, consistency expectations, and TTL expiry rules. A default selected without requirements can return stale records or cause excess invalidations; targeted questions expose the missing contract. By contrast, unstated consistency requirements can invalidate the design. An arbitrary TTL can violate stale-read guarantees or unnecessary cache-refresh limits. Clarification should focus on decisions affecting behavior. UI preferences do not determine the allowed consistency lag or invalidation trigger.

Incorrect Answers

A:

Clarification should focus on decisions affecting behavior. UI preferences do not determine the allowed consistency lag or invalidation trigger. Cache invalidation semantics depend on required staleness tolerance, consistency expectations, and TTL expiry rules. A new cache invalidation feature has unstated consistency and time-to-live constraints.

B:

Unstated consistency requirements can invalidate the design. An arbitrary TTL can violate stale-read guarantees or unnecessary cache-refresh limits. A new cache invalidation feature has unstated consistency and time-to-live constraints. Instead, ask targeted design questions before changing code. Cache invalidation semantics depend on required staleness tolerance, consistency expectations, and TTL expiry rules.

D:

Operational defaults are not stakeholder requirements. Library defaults are implementation choices rather than business rules for expiry and freshness. Cache invalidation semantics depend on required staleness tolerance, consistency expectations, and TTL expiry rules. Instead, ask targeted design questions before changing code.

Question 239

Two bug fixes share a common caching race and patching them separately causes conflict. Which TWO refinements best address the failure? (SELECT TWO)

  1. Submit the fixes as two isolated patches with no race analysis.
  2. Ask separate agents to modify the same cache without coordination.
  3. Request a coordinated fix covering both interacting failures.
  4. Hide one failure until the other is merged.
  5. Explain the shared root cause.

Explanation

Correct Answers

C:

When two fixes touch the same cache lifecycle, separate patches can change invalidation or locking order in incompatible ways. Coordinate one change that accounts for both failing interleavings and tests the shared synchronization boundary. For example, an eviction fix must not invalidate an assumption made by a concurrent write repair. Shared review of state transitions and combined regression tests is more reliable than merging two independently reasoned patches that happen to pass their own isolated checks.

E:

Explain the common caching race in terms of observable reads, writes, invalidations, and the ordering that lets the failures arise. That causal description gives reviewers a single hypothesis against which to evaluate both patches and provides a basis for reproducing the defect. Merely concealing one symptom or applying a generic lock everywhere would not demonstrate that the underlying race is gone. The explanation should identify the critical interleaving and its expected corrected behavior.

Incorrect Answers

A:

Both symptoms share synchronization state. One patch can invalidate assumptions of the other while both touch shared synchronization state. Two failures sharing a cache race need one model of concurrent reads, writes and invalidation ordering. Two bug fixes share a common caching race and patching them separately causes conflict.

B:

Concurrent edits can introduce conflict and repeated races. Concurrent independent writes to the cache can conflict and reintroduce timing failures. Two failures sharing a cache race need one model of concurrent reads, writes and invalidation ordering. Two bug fixes share a common caching race and patching them separately causes conflict.

D:

Suppression conceals rather than resolves the common cause. Concealing one observed symptom prevents tests from covering all offending interleavings. Independent patches to the same state machine can interact and reintroduce the race; tests must cover both observed schedules. Two bug fixes share a common caching race and patching them separately causes conflict. Instead, explain the shared root cause and request a coordinated fix covering both interacting failures.

Question 240

Two unrelated UI labels need correction and one failing network call is separate. What is the most reliable next refinement?

  1. Commit all changes without testing any intermediate result.
  2. Ask for a global architecture plan before fixing three isolated issues.
  3. Rewrite the network stack as part of label corrections.
  4. Apply and test unrelated changes in bounded passes.

Explanation

Correct Answer

D:

Unrelated UI text edits and a separate network failure can be isolated into small reversible changes with focused tests. Combining every concern in one opaque patch obscures which edit caused a regression and creates unnecessary review scope. By contrast, unrelated scope makes regression attribution difficult. A label fix should not alter transport logic, request retries or network error handling. A failure cannot be linked to a bounded change. Without intermediate tests the developer cannot isolate which edit introduced a failure.

Incorrect Answers

A:

A failure cannot be linked to a bounded change. Without intermediate tests the developer cannot isolate which edit introduced a failure. Two unrelated UI labels need correction and one failing network call is separate. Instead, apply and test unrelated changes in bounded passes.

B:

The defects do not depend on the same design choice. A complete architecture study adds no value when the three issues have no shared dependency. Combining every concern in one opaque patch obscures which edit caused a regression and creates unnecessary review scope.

C:

Unrelated scope makes regression attribution difficult. A label fix should not alter transport logic, request retries or network error handling. Combining every concern in one opaque patch obscures which edit caused a regression and creates unnecessary review scope. Two unrelated UI labels need correction and one failing network call is separate. Instead, apply and test unrelated changes in bounded passes.

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