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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 4

Question 30

Two retrieval agents disagree about a supplier’s deployment date. An aggregator compresses both findings into “deployment occurred recently” and removes the document IDs. What output design best supports a defensible answer?

  1. Average the two calendar dates into a midpoint and report it as the documented deployment date.
  2. Attach source identifiers, dates and an uncertainty marker to each disputed claim, and present the contradiction for resolution.
  3. Choose whichever date appears first in the merged paragraph and omit the other.
  4. Remove all source references so the answer appears concise and confident.

Explanation

Correct Answer

B:

Claim-level provenance prevents a synthesis step from laundering conflict into a false definite fact. Reviewers can trace each date to its evidence and assess freshness.

Incorrect Answers

A:

A date average has no source support and invents an event time. Conflicting records require clarification, not arithmetic compromise.

C:

Response order does not establish evidence quality. Silencing a contradiction misleads the reader about uncertainty.

D:

Without attribution, downstream users cannot verify the competing dates. Concision should not erase the evidence required for auditability.

Question 31

An assistant emits two parallel tool_use requests for a shipping lookup and an inventory check. The application executes both successfully but sends only the shipping result and asks the model to finish. What should the loop do?

  1. Replace the tool results with a text summary stating that all backend calls succeeded.
  2. Convert each tool result into an independent new system message containing unrelated instructions.
  3. Return results for both requested tool-use IDs in the next conversation message before requesting the model’s continuation.
  4. Send only the fastest tool result and silently discard the other request.

Explanation

Correct Answer

C:

The model is waiting for the outstanding tool results it requested. Correctly associating each result with its tool-use ID allows reliable reasoning about both stock and shipment.

Incorrect Answers

A:

A success statement is not the structured output the model requested. It omits concrete payloads and their tool-use associations.

B:

Tool outputs are observations, not higher-priority instructions. Promoting them to system authority changes the trust boundary and can expose the assistant to untrusted directions.

D:

The missing inventory result leaves the model without information needed for its next decision. It also breaks the application’s record of requested tool work.

Question 32

A market-research coordinator assigns three subagents to investigate the same vendor, but all three search identical public pages while the regulator filings are ignored. How should the delegation change?

  1. Let each subagent publish its own unrelated final report without coordinator integration.
  2. Drop regulatory filing analysis because multiple agents already found the same press release.
  3. Assign complementary source types or subtopics, share explicit coverage boundaries, then let the coordinator integrate findings and gaps.
  4. Increase the number of identical subagents until they eventually discover different pages.

Explanation

Correct Answer

C:

Distinct scopes reduce redundant tool calls and improve breadth. A coordinator can resolve overlaps and identify missing regulatory evidence before synthesis.

Incorrect Answers

A:

Separate reports can conflict, duplicate findings, or leave key areas unexplored. The coordinating agent is responsible for an integrated outcome.

B:

Repetition is not coverage. The missing source category may materially change the conclusion and must receive a defined research assignment.

D:

Duplicating the same unfocused assignment compounds wasted requests. It does not guarantee that an omitted source category will be covered.

Question 33

A service agent must escalate a complex warranty-plus-refund case after verifying the requester. Human staff receive only “customer has a problem,” so they repeat checks and overlook the pending $48.90 credit. What should the handoff include?

  1. State that the refund was completed even though it is merely pending.
  2. Ask the human to start a new investigation and disregard all prior verified tool results.
  3. Provide a structured summary of verified customer ID, affected orders, the $48.90 pending credit, investigation results, blockers and requested next action.
  4. Provide the customer’s name only and omit the financial amount to save context.

Explanation

Correct Answer

C:

A concrete handoff lets the human continue safely without re-creating the whole investigation. It preserves obligations and clearly separates performed work from recommendations.

Incorrect Answers

A:

Misrepresenting execution status could lead staff to close the case or fail to act. Handoffs must preserve whether an action is proposed, pending or done.

B:

Repeating completed checks increases handling time and can create inconsistencies. An auditable summary transfers known evidence and remaining uncertainty.

D:

The name alone cannot convey the outstanding payment decision. Removing the exact credit risks a wrong or duplicate transaction.

Question 34

A team asks an agent to “add comprehensive tests” to a legacy service without documenting its modules. Which initial strategy produces better coverage than blindly writing tests for arbitrary files?

  1. Prioritize new tests for the most recently modified files before mapping critical service behavior.
  2. Generate only snapshot tests of rendered output before discovering business logic.
  3. Choose a random half of modules to test to meet a fixed time budget.
  4. Map the service entry points, risk-critical components and existing tests, then derive targeted test subtasks that adapt as gaps are discovered.

Explanation

Correct Answer

D:

Open-ended test coverage benefits from discovery-guided decomposition. Prioritizing behavior and dependencies produces more valuable tests than an arbitrary file-by-file order.

Incorrect Answers

A:

Recent edits can be a useful signal but are not a sufficient coverage plan. The undocumented service may contain high-impact older transaction paths and untested dependencies; map those behaviors before prioritizing tests.

B:

Snapshots can miss important semantic and failure-mode behavior. A structural map helps identify where contracts and edge cases require assertions.

C:

Random allocation can omit critical services and duplicate existing suites. Risk and dependency discovery are better planning inputs.

Question 35

A warranty assistant may authorize refunds up to $500. A customer requests $735 and the model prepares a refund tool call anyway. Which interception design protects the limit?

  1. Hide the amount from the tool call so the backend cannot reject it.
  2. Add another system-prompt reminder without any executable guard.
  3. Check amount and authorization in a PreToolUse guard, block the call above $500 and route the case to approved escalation.
  4. Call the refund tool first and reverse the payment if monitoring later detects excess.

Explanation

Correct Answer

C:

The guard enforces a deterministic limit before money changes hands. The agent can explain the denial while retaining the policy-rejected action in its audit trail.

Incorrect Answers

A:

Omitting required financial context undermines validation and may produce a malformed or unsafe transaction. The backend should receive and enforce accurate amounts.

B:

Prompts may reduce mistakes but cannot guarantee that all model-generated calls honor a hard financial ceiling. A technical precondition is necessary.

D:

Reversals can fail and create customer harm. A preventive threshold check should reject the prohibited action before it occurs.

Question 36

An architect needs independent evidence on data governance, billing and storage. The coordinator sends a research subagent request, waits, then sends the next despite no dependencies. What improves elapsed time without breaking isolation?

  1. Require each subagent to finish before even defining the next independent task.
  2. Issue separate concurrent subagent calls with clearly scoped prompts and explicit source requirements, then aggregate all responses centrally.
  3. Give the first subagent all three tasks and wait for one unstructured final paragraph.
  4. Have each child modify the same shared result file without conflict controls.

Explanation

Correct Answer

B:

Independent assignments can run in parallel. Self-contained contexts and coordinator aggregation preserve attribution and avoid the false assumption that child agents share history.

Incorrect Answers

A:

Unnecessary serialization increases latency without providing extra correctness. The coordinator can dispatch independent scoped calls in one phase.

C:

A giant mixed task weakens specialization and loses the parallelism that independent evidence gathering permits. The coordinator should combine scoped outputs.

D:

Concurrent uncontrolled writes can overwrite evidence and make results unreproducible. Distinct outputs should be merged centrally.

Question 37

The single analyze_document tool sometimes extracts numeric fields, sometimes summarizes, and sometimes asserts factual verification. Downstream agents do not know which output structure to expect. What redesign should come first?

  1. Keep one broad name and set its description to “does everything.”
  2. Make every caller parse arbitrary prose and infer whether it is a summary or extracted data.
  3. Remove source-verification behavior and label all generated conclusions verified.
  4. Separate extraction, summarization and source-verification functions with clear inputs, outputs, and intended users.

Explanation

Correct Answer

D:

Purpose-specific contracts reduce ambiguous invocation and let downstream code validate the correct type. Verification also needs its own evidence requirements.

Incorrect Answers

A:

An unspecified catch-all increases routing confusion and response-shape instability. It does not define the distinctions the caller needs.

B:

Heuristic parsing creates fragile integrations and can misclassify evidence. Named outputs are safer for automation.

C:

Verification cannot be implied by naming. The system must explicitly examine evidence before asserting factual support.

Question 38

An MCP search service times out for one query while normal validation and authorization checks pass. The agent needs a retry decision without looping indefinitely. What structured response is most useful?

  1. Return success with an invented empty result and no indication of timeout.
  2. Label the timeout as a permanent business-rule rejection and never permit a retry.
  3. Return an unclassified raw exception stack as the only response to end users.
  4. Return isError with a transient category, isRetryable true, and an informative message so the caller can apply bounded backoff.

Explanation

Correct Answer

D:

A typed retryable timeout gives the agent a principled recovery path. Recording the attempted query and retry count prevents endless silent repetition.

Incorrect Answers

A:

A failed request did not establish that there are no matches. Treating it as success could cause unsupported decisions.

B:

Temporary service unavailability differs from policy denial. The category should reflect the actual failure to support appropriate recovery.

C:

Internal exceptions can leak implementation details and do not tell the agent whether retrying will help. Structured, sanitized metadata is preferable.

Question 39

A synthesis agent needs to confirm a citation’s publication date in most requests, but full web exploration must remain restricted to the research agent. Which permission design is a reasonable compromise?

  1. Teach the agent to output today’s date whenever a page has no visible publication date.
  2. Provide a constrained date-verification tool with narrow inputs while routing general searches through the coordinator.
  3. Give the synthesis agent a generic unrestricted read-only web-search interface, since its fact checks are frequent.
  4. Forbid all evidence checks and allow the synthesis agent to infer dates from article titles.

Explanation

Correct Answer

B:

The small cross-role capability solves a frequent bounded need without giving synthesis unrestricted exploration. It should return source identifiers and explicit failure states.

Incorrect Answers

A:

Substituting the current date invents a source property. A verifier should return unknown when evidence is absent.

C:

Read-only search is less dangerous than mutation, but broad discovery still exceeds the frequent narrow publication-date task. A constrained verification tool can return authoritative dates without exposing unrelated browsing scope.

D:

A title does not reliably prove publication time. The workflow needs source-grounded date verification where it materially affects conclusions.

Question 40

A documentation MCP server has hundreds of documents, but the assistant repeatedly guesses paths and calls fetch_document for files that do not exist. What capability would most directly improve discovery?

  1. Increase the maximum number of failed fetch attempts per request.
  2. Have the agent fabricate plausible document URLs from page titles.
  3. Paste every entire document into a single tool description.
  4. Expose a structured MCP resource catalog of available document titles and identifiers before requesting full content.

Explanation

Correct Answer

D:

A catalog helps the agent select actual resources without blind fetch attempts. It can keep large document bodies out of context until needed.

Incorrect Answers

A:

More guessing increases latency without making available identifiers discoverable. The underlying problem is missing resource discovery.

B:

Guessing paths risks incorrect source claims and cannot establish availability. The server should publish valid resource identifiers.

C:

Descriptions are for choosing tools, not bulk content storage. A resource catalog and targeted reads are more scalable.

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