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Exam Code: CCA-F

Exam Name: Claude Certified Architect - Foundations

Certification Provider: Anthropic

Questions & Answers

Anthropic CCA-F Questions & Answers

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Anthropic CCA-F Practice Test 14

Question 130

A multi-agent research workflow has a search specialist that returns only 'failed' when a citation lookup produces no usable result. The coordinator cannot tell whether the search used the wrong journal title, a restrictive date filter, or the wrong country. Which response improvement best supports recovery?

  1. Include the attempted query, filter scope, and an error category in a sanitized failure result.
  2. Omit all query parameters because the coordinator might anchor on them.
  3. Return a made-up citation so the coordinator can continue drafting.
  4. Mark every failure as server-down so the coordinator automatically retries the same query.

Explanation

Correct Answer

A:

The parent agent needs enough context to choose a justified next step without replaying the entire discovery process. Return the terms and approved search scope actually attempted, together with whether the failure was no-match, timeout, or authorization-related. That makes it possible to adjust a date filter or select a different source deliberately. Avoid copying secret tokens or irrelevant raw backend traces. The primary goal is transparent error provenance, not simply a louder 'failed' message.

Incorrect Answers

B:

Hiding the attempt prevents reproducibility and makes each retry a blind guess. The coordinator cannot isolate a wrong journal or date bound without seeing the searched scope. Sanitized parameters are operational evidence, not a reason to expose credentials. Replaying the failed scope is necessary for diagnosis.

C:

A fabricated reference converts a recoverable retrieval problem into an evidentiary integrity failure. Later citation checks may not detect the invented source immediately. The workflow should explicitly report uncertainty or unavailable evidence until a real citation is found. Evidence must be obtained before a publication claim.

D:

No-match, restrictive filters, and transient outages require different recovery actions. An unconditional server-down label masks meaningful diagnostics and encourages ineffective repeat calls. Typed error categories and attempted parameters allow a targeted response. Recovery should respond to cause, not a universal fallback label.

Question 131

A research specialist successfully extracted figures from two annual reports but the third publisher's site timed out. The coordinator currently receives only an exception and loses the usable cited figures. Which TWO response features are most appropriate? (SELECT TWO)

  1. Discard all previously retrieved figures so the final answer contains no partial information.
  2. Return the two supported figures, labeled with their individual source identifiers.
  3. Guess the missing third figure from the average of the two available reports.
  4. Mark the combined result as fully complete because two of three sources returned.
  5. Propagate a typed third-source-unavailable condition alongside the partial results.

Explanation

Correct Answers

B:

The successful results remain usable if their origins and extraction scope are preserved. A structured partial-data section can contain each figure and its cited document identifier, allowing the coordinator to assemble a qualified comparison or avoid unsupported conclusions. Partial success must never be silently interpreted as full coverage, especially when the third source may alter the overall analysis. Distinguishing known values from missing values is more reliable than wiping the whole evidence set.

E:

The coordinator must know which source failed and whether recovery is feasible. A typed timeout condition, source identifier, and perhaps retry guidance enable a bounded follow-up without invalidating the two successful reads. That error should coexist with the partial evidence rather than replacing it or being hidden inside narrative text. This allows the final report to cite known figures accurately and disclose the missing publisher's data if the deadline arrives before recovery.

Incorrect Answers

A:

Discarding valid evidence loses useful work and makes the coordinator repeat successful retrievals. A failure in one source should not automatically invalidate independent completed reads. The returned record should distinguish confirmed figures from the unavailable portion. Independent sources may still contribute a qualified finding.

C:

An arithmetic estimate is not a retrieved publisher figure and cannot be presented with a citation to the failed source. This would hide the timeout and compromise provenance. If an estimate is useful, it must be explicitly requested and labeled separately, not silently filled.

D:

Completeness is a property of the requested evidence set, not the number of operations that happened to finish. Returning a false complete flag prevents necessary follow-up and may yield overconfident findings. The result should explicitly state one unresolved publisher. A valid partial result should carry an incomplete-status marker.

Question 132

A scholarly search MCP server returns HTTP 429 with a Retry-After header. The agent instantly launches twenty concurrent repeats and receives more throttling. Which TWO connector behaviors should be implemented? (SELECT TWO)

  1. Treat throttling as successful search with zero matches.
  2. Report a typed, retryable rate-limit category instead of a generic failed search.
  3. Return the permitted delay from Retry-After and cap retries/concurrency.
  4. Increase concurrency with every 429 because parallelism eventually bypasses the limit.
  5. Label the request as a permanent schema error and change the citation text.

Explanation

Correct Answers

B:

A specific throttling category explains why no search results were returned and distinguishes the incident from invalid arguments or absent publications. The caller can apply policy-defined backoff rather than changing the query arbitrarily or concluding that a paper does not exist. Retryability here is conditional: the client must respect the service's quota and its own retry budget. The error signal should not imply unlimited attempts or automatic concurrency growth.

C:

The backend supplied scheduling information that should guide the next attempt. Surface a bounded delay and retry limit, preferably with jitter and a concurrency cap so a single error does not fan out into a thundering herd. The coordinator should wait only within its deadline and, if the budget is exhausted, report that results remain unavailable or use an approved alternate source. This is a controlled recovery path, not blind repetition.

Incorrect Answers

A:

Throttling is a service capacity or quota decision, not evidence that no matching papers exist. An empty success would mislead the user and suppress needed recovery. The tool should represent the call as unsuccessful with a retry condition. An empty success means the operation actually completed.

D:

More simultaneous requests usually intensify throttling and can violate provider terms. It does not address the explicit Retry-After guidance. The client should reduce pressure and honor bounded retry scheduling rather than amplify a rate-limit condition. Retrying should occur only after the specified delay.

E:

The original arguments may be perfectly valid. Changing the citation query does not replenish a quota or satisfy a time-based throttle. A rate-limit failure deserves its own category so the agent can retry safely or fall back. Adjusting terms will not address a service-wide quota.

Question 133

An MCP adapter combines two account systems: one returns HTTP 404 when no account exists, while another returns a successful JSON envelope with code ACCOUNT_MISSING. The support coordinator handles these identical business outcomes differently. What should the adapter do?

  1. Expose the underlying HTTP status codes without interpreting either response.
  2. Map both backend forms to a shared, documented account_not_found semantic outcome.
  3. Classify both outcomes as invalid authentication so every customer must sign in again.
  4. Return a synthetic account with empty properties to avoid exception handling.

Explanation

Correct Answer

B:

The caller needs one consistent meaning for the same underlying business state: no account matches the authorized lookup. The adapter can normalize different transport envelopes and expose a stable typed category, while preserving enough provenance to troubleshoot the originating service. This reduces inconsistent customer responses and unnecessary retries. The normalization must be based on actual provider meanings, not on superficial numeric similarity; permission-denied and transient failures should remain distinct outcomes.

Incorrect Answers

A:

Transport codes differ by backend contract, and one service reports the same condition inside a successful HTTP response. Passing raw codes alone forces every downstream agent to know each service's quirks. A normalized semantic category can still retain the original code in restricted diagnostics.

C:

No account found is not necessarily a credential problem. Reauthentication will not create a missing account and may frustrate a user who is already properly authenticated. Distinct auth and business not-found categories should not be merged. Account existence and authentication are separate dimensions.

D:

Fabricating a record breaks the distinction between a nonexistent account and an existing blank one. It could trigger downstream actions against a record that the backend never returned. A typed no-match outcome is safer and easier to reason about. Downstream mutations must require records from authoritative systems.

Question 134

A customer database connector fails and includes a connection string containing a password and session token inside the text returned to Claude. The monitoring team needs diagnostic traces, but the model should not see secrets. What is the best redesign?

  1. Keep full connector traces in every model-visible error so debugging is easier.
  2. Omit the failure entirely and return a successful customer record with placeholder values.
  3. Send a sanitized error category to Claude, while storing restricted detailed traces in an access-controlled log.
  4. Base64-encode the connection string inside the error payload so it is no longer plain text.

Explanation

Correct Answer

C:

The tool should give the model actionable information such as service_unavailable and a correlation identifier, not raw credentials or stack-trace secrets. Detailed diagnostics can be retained in protected logs for authorized operators with appropriate redaction, retention, and access controls. This supports incident investigation without spreading tokens through model context or user answers. The original failure still needs an explicit error indicator so callers do not infer that the customer record was read successfully.

Incorrect Answers

A:

The assistant does not need database credentials to explain a failure. Model-visible traces can be copied into responses or persisted in conversation context, expanding the impact of a single fault. Sensitive diagnostics should be separated from the error semantics used by the agent.

B:

Suppressing the error misleads the assistant and can cause actions based on fabricated record state. Security should not be obtained by manufacturing success. A safe, explicitly unsuccessful result can preserve the necessary control-flow meaning without exposing secrets. The agent must know that no real customer record was obtained.

D:

Encoding is not secret removal: the encoded credential remains recoverable. Models, logs, or users could still decode or forward it. Proper handling requires redaction of model-visible results and controlled storage of any necessary internal diagnostic information. Security depends on limiting access to original secret material.

Question 135

A support assistant's live product-catalog MCP server is offline, but a versioned, approved knowledge article still accurately states the general return window. The customer asks about the policy and their order's current return eligibility. Which behavior is safest?

  1. Use the verified static policy for general guidance and explicitly say order-specific eligibility cannot be checked now.
  2. Assume every order is eligible because the policy document remains available.
  3. Refuse to explain even the general policy because one backend is unavailable.
  4. Invent an order status from the customer's description and report eligibility as confirmed.

Explanation

Correct Answer

A:

The application retains one trustworthy source for the general return window but has lost the live data needed for a decision about this customer's particular order. The agent should distinguish those evidence scopes: cite the approved static policy and mark the specific eligibility question unresolved. It may offer a later lookup or authorized support route. This controlled degraded mode helps the customer without inventing a current order status or treating an outage as proof of eligibility.

Incorrect Answers

B:

A general policy cannot establish purchase date, product exclusions, refund history, or other live eligibility factors. Treating it as account-specific confirmation creates an unsupported promise. The outage must be disclosed and any individual determination deferred. These conditions often require live, order-specific checks.

C:

The static article is still available and approved for general guidance. Discarding it would unnecessarily prevent a helpful, grounded answer. The appropriate distinction is between facts available from the article and the status-dependent claim that requires the offline service. It is possible to answer partially without guessing.

D:

Customer recollection may be incomplete and cannot substitute for authoritative account data. Fabricating a live eligibility decision could lead to incorrect financial promises. The assistant should identify the missing verification and use an approved escalation or follow-up path. A guessed order state is not verified evidence.

Question 136

An MCP server catches a validation rejection but returns isError=false and a JSON object with success=true even though no update occurred. The coordinator then continues an automated workflow as if the record was written. Which fix has priority?

  1. Add a more forceful 'please notice' sentence to the model system prompt.
  2. Keep isError=false but change the object field to successful=false without other explanation.
  3. Repeat the rejected update automatically until a success envelope eventually appears.
  4. Return isError=true and a typed validation failure, with success=false and corrective details.

Explanation

Correct Answer

D:

The server's first obligation is to represent what happened accurately. A rejected write should be an MCP tool-execution error rather than a successful record update; the application payload should agree and identify which input constraint failed. The coordinator can then request a corrected value or stop dependent steps. This change fixes the protocol contract that caused the workflow to advance on false success and does not rely on a model guessing that 'success' means something else.

Incorrect Answers

A:

The faulty success flags live at the integration boundary, independent of prompting quality. Even careful models can treat an explicit success envelope as authoritative. The server should correct its result semantics so the coordinator can make a reliable control-flow decision.

B:

A single application field may help, but the MCP-level execution status would still contradict the actual rejection. The caller can misinterpret the envelope or fail to surface correction guidance. The implementation should use consistent error semantics and a typed validation reason.

C:

Deterministic validation failures are not corrected through retries. Retrying invalid writes wastes resources and can cause unforeseen effects if inputs change without authorization. The request needs a corrected value and an explicit failure state before proceeding. Invalid fields must be corrected under the tool contract.

Question 137

A customer lookup returns no record to a support agent. In one case the authenticated caller lacks permission to see the record; in another case the record truly does not exist. Which approach best prevents the coordinator from misclassifying these outcomes?

  1. Return a generic not_found for both cases, even to authorized internal diagnostics.
  2. Use the actual authorization/not-found backend decision and enforce a disclosure policy for the caller.
  3. Always tell the user that the requested customer record exists if any permission error occurs.
  4. Retry the lookup with elevated service credentials whenever a permission error occurs.

Explanation

Correct Answer

B:

The connector should understand the source result rather than infer 'not found' from a blank payload. A forbidden lookup and a truly absent record can require different recovery, audit, and escalation paths. Preserve the underlying category in protected diagnostics, while rendering only what the caller is entitled to learn; an unprivileged user may receive a deliberately non-enumerating message. This maintains both operational correctness and the privacy requirement not to reveal whether a restricted customer's record exists.

Incorrect Answers

A:

Some public interfaces deliberately conceal record existence, but collapsing every internal diagnostic into not_found prevents operators from distinguishing denied access from absent data. The provider's actual code should be retained in controlled logs, with customer-facing disclosure restricted appropriately. Controlled diagnostic reporting can still protect public privacy.

C:

A permission denial does not authorize disclosure of record existence. Such a response could enable account enumeration or leak information about restricted customers. The backend must enforce access and the assistant must follow the caller-specific disclosure rule. A restricted object may require a non-enumerating reply.

D:

Changing the caller's authority to bypass an access decision is not a legitimate error recovery mechanism. It violates least privilege and can expose private records. An approved escalation path should be separate from automatic retries or privilege expansion. Elevation belongs to an audited authorization process.

Question 138

An account-update MCP tool times out while changing a customer's communication preference. The backend may already have committed the write, so a blind repeat might trigger duplicate downstream notifications. Which TWO safeguards are appropriate? (SELECT TWO)

  1. Attach a stable idempotency key that identifies the customer's single intended change.
  2. Resubmit the update with a new key immediately to guarantee delivery.
  3. Perform a status reconciliation against authoritative backend state before any repeat.
  4. Assume an HTTP timeout always means the database rolled back the update.
  5. Report the preference changed successfully without checking any backend status.

Explanation

Correct Answers

A:

A stable operation identifier allows the backend to recognize duplicate attempts for one authorized change. Its usefulness depends on the server actually enforcing idempotency across retries; a token in the prompt alone is insufficient. In this scenario the timeout makes the commit outcome ambiguous, so tying all attempts to one logical operation reduces the chance of duplicate preference events. Preserve the key through any authorized recovery and do not generate a fresh operation ID merely because the first response was lost.

C:

The caller must determine whether the initial preference change took effect. A read of the authoritative preference or transaction/event log, coupled with an idempotency lookup, can disambiguate the lost response before retrying. If the state confirms success, there is no reason to issue another mutation. If unresolved, the workflow should stop or follow a bounded, server-supported recovery plan rather than performing blind writes. This step is specifically important for uncertain side-effecting operations, unlike harmless searches.

Incorrect Answers

B:

A fresh key can make a retry look like a separate operation, causing multiple notifications if the first change already committed. Timeouts do not prove rollbacks. First reconcile the recorded state and reuse an enforced idempotency identifier where appropriate. Server-generated event identifiers should be reconciled as well.

D:

The client can lose the response after the server commits data. A blanket rollback assumption is not supported by the observed symptom and can trigger additional side effects. The workflow needs authoritative reconciliation rather than a guess about transaction timing.

E:

That statement is not justified while the commit outcome is unknown. It could either conceal a failed change or invite a new inconsistent attempt. The assistant must communicate uncertainty and verify the recorded state before confirming the action. A definitive message requires confirmation from the system of record.

Question 139

A refund case coordinator creates a report-writing subagent whose role is to explain refund decisions. The agent has both documentation tools and an executable process_refund capability, and an untrusted note sometimes induces it to issue a refund. What configuration change is most appropriate?

  1. Give the reporting specialist all available tools, but tell it to ignore suspicious instructions.
  2. Remove process_refund from the specialist's available tools; permit only evidence retrieval and drafting.
  3. Run report generation only when the refund backend is offline.
  4. Rename process_refund to an obscure identifier while leaving it callable.

Explanation

Correct Answer

B:

The reporting role needs read access to approved case facts and the ability to produce explanation text, not financial mutation rights. Least-privilege tool assignment prevents this subagent from initiating a refund even if a document contains misleading instructions. The coordinator can route genuine refund operations to an appropriately authorized component that checks identity, policy, and explicit action approval. This is a role boundary rather than a prompt-only preference and reduces accidental or adversarial financial side effects.

Incorrect Answers

A:

A prose instruction is weaker than removing unneeded capabilities. The specialist has no business reason to execute a refund, and untrusted content can still create pressure to use a visible tool. Restricting the tool surface limits the impact of a misinterpreted request.

C:

An outage is not a security control or a sustainable way to prevent tool misuse. The agent could regain mutation access later and the same vulnerability would remain. Correct tool permissions and backend authorization are needed independently of availability. The specialist should not depend on outage conditions.

D:

Obscure names do not change tool authority and may make legitimate auditing harder. The model or injected content could still select the mutating capability. The tool must be excluded from the reporting subagent, not merely hidden by naming. Least privilege is a stronger safeguard than naming obscurity.

Question 140

A web-research subagent collecting citations can also invoke a local delete_file tool. A malformed document excerpt once led it to delete a temporary report file. Which role design change most directly prevents recurrence?

  1. Increase the maximum number of tool calls so the researcher can inspect more documents.
  2. Retain delete_file but require the researcher to include a rationale in its final prose.
  3. Restrict allowed tools to approved search and read operations, excluding deletion.
  4. Replace the citation source parser with a faster one while retaining the same tool permissions.

Explanation

Correct Answer

C:

A citation specialist should retrieve sources and inspect their content; filesystem deletion is outside that responsibility. Configuring a read-only allowedTools set makes the destructive action unavailable to that subagent rather than depending on the model to ignore a malicious excerpt. Backend filesystem permissions should reinforce this boundary. The coordinator can reserve cleanup work for a separate, explicitly authorized workflow with appropriate approvals and auditability. This maps the capability surface to the task's actual needs.

Incorrect Answers

A:

Additional tool opportunities do not limit the risk of deleting files. The root cause is a mutation capability unrelated to a citation retrieval role. The agent should have an intentionally smaller tool set and follow backend permission checks. More requests could create additional opportunities for misuse.

B:

A final explanation arrives after an unsafe action and cannot restore deleted data. Prose logging may help audit but does not enforce a boundary. Removing unnecessary mutation access is the more direct preventive measure. Side-effecting operations need enforceable permission and approval gates.

D:

Parser speed does not affect whether the subagent can execute an unwanted delete operation. Even correctly parsed data can contain untrusted instructions that attempt to redirect behavior. The tool boundary and authorization policy need to change. Authorization failure is independent of parser performance.

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