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Exam Code: CCA-F

Exam Name: Claude Certified Architect - Foundations

Certification Provider: Anthropic

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"Claude Certified Architect - Foundations Exam", also known as CCA-F exam, is a Anthropic certification exam.

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Anthropic CCA-F Practice Test 1

Question 1

A subscription-support agent calls a billing lookup and receives an assistant message containing introductory text plus a tool_use block. The outer application mistakenly treats any assistant text as completion. What should control the next turn?

  1. Restart the original request with an empty conversation whenever tool_use appears.
  2. Mark success when the application has executed at least one tool, even if the model requested more.
  3. Execute the requested tool and send its result in the next conversation turn before deciding whether the model is finished.
  4. Stop immediately because an assistant text block was emitted with the tool call.

Explanation

Correct Answer

C:

A tool_use stop signals that the model is waiting for a tool result. Continuing with that result preserves the agent loop; a later end_turn indicates completion.

Incorrect Answers

A:

Resetting history discards the model’s requested action and the customer details already gathered. The next step should carry the tool result into the existing conversation.

B:

A fixed count of tool calls is not a completion signal. The model may need several tool-result iterations before it produces a final answer.

D:

An assistant can speak and request a tool in the same response. Text alone does not satisfy the pending tool-use request or establish that the task is complete.

Question 2

A research assistant has search, financial-analysis, and synthesis subagents. Simple factual requests currently trigger all three, adding latency and unnecessary financial queries. Which orchestration policy best fits a hub-and-spoke design?

  1. Have the coordinator classify the task, delegate only relevant specialists, and combine their results in one controlled response.
  2. Run every subagent for every request to keep orchestration behavior completely uniform.
  3. Let the financial-analysis subagent command the web-search subagent without informing the coordinator.
  4. Send each subagent the same raw query and publish whichever responds first.

Explanation

Correct Answer

A:

A coordinator owns decomposition and routing. Selecting specialists dynamically keeps simple tasks inexpensive while retaining a path for complex multi-source questions.

Incorrect Answers

B:

Mandatory fan-out wastes work on tasks that do not require all specialties. A hub-and-spoke coordinator is expected to choose subagents according to the query.

C:

Uncoordinated inter-subagent routing hides dependencies, intermediate errors and provenance. The coordinator should retain visibility over delegation and aggregation.

D:

The earliest response may lack needed evidence or contradict other findings. The coordinator must define appropriate scopes and synthesize completed relevant outputs.

Question 3

A service bot may issue refunds after verifying a purchase. During adversarial testing it sometimes calls the refund tool before customer identity is confirmed, despite a strong instruction never to do so. What design eliminates that bypass?

  1. Allow refunds and notify a supervisor afterward if identity was not verified.
  2. Block refund execution in a deterministic pre-tool policy until a valid verified customer identifier and authorization state are present.
  3. Repeat the verification instruction in larger and more emphatic system prompts only.
  4. Check the conversation for the words “I verified” before performing a refund.

Explanation

Correct Answer

B:

A runtime prerequisite gate can reject disallowed side effects regardless of model wording. Prompts help guide behavior but cannot guarantee this compliance boundary.

Incorrect Answers

A:

After-the-fact alerts do not prevent a prohibited financial action. The policy requires a prerequisite check before the side effect occurs.

C:

Additional prompting may improve ordinary behavior but remains probabilistic. The required guarantee must be enforced by code or a tool interceptor.

D:

A phrase can be produced without completing an authoritative identity check. Verification must come from trusted tool state rather than conversational language.

Question 4

A team must review a fixed set of configuration files and then determine whether their combined routing rules conflict. No new discovery tasks are expected. Which decomposition is best?

  1. Use one enormous undifferentiated prompt containing every file and request a single verdict.
  2. Run open-ended file analyses without a required final cross-file reconciliation, and rely on each result separately.
  3. Review one file and assume its findings apply to all other files.
  4. Run a focused review of each file, then perform a cross-file integration pass using the local findings.

Explanation

Correct Answer

D:

The workflow has predictable stages and an explicit inter-file dependency. Local passes retain detail, while the final pass catches interactions that isolated reviews miss.

Incorrect Answers

A:

An oversized single review can dilute attention and overlook contradictions between files. Separating local and integration questions gives clearer coverage.

B:

Independent local analysis can find each file’s defects, but without a required integration decision it may miss routing conflicts that arise only when policies are combined.

C:

Other files can contain distinct security rules and combined-policy conflicts. This approach neither checks each file nor the integration behavior.

Question 5

A case-analysis agent receives timestamps as Unix seconds from one backend and ISO-8601 strings from another. Its timeline occasionally reverses events because the assistant compares raw text. What is the most reliable place to correct this?

  1. Drop timestamps from both tool responses and have the model infer ordering from prose.
  2. Use a PostToolUse transformation to normalize timestamps into an agreed typed representation before the agent sees the returned data.
  3. Ask the agent to remember that some values might be timestamps.
  4. Sort original backend strings alphabetically and treat that order as chronology.

Explanation

Correct Answer

B:

Post-tool normalization makes downstream reasoning consume consistent timestamps. Preserving source fields also makes the transformation auditable and avoids repeated parsing guesses.

Incorrect Answers

A:

Removing time evidence makes chronology less verifiable. Normalize rather than discard the source data needed to establish event order.

C:

A vague warning leaves conversion to probabilistic model behavior. It does not guarantee comparable units or consistent timezone handling.

D:

Lexicographic sorting cannot safely compare Unix seconds with formatted timestamps. A canonical time representation is necessary for a reliable timeline.

Question 6

A coordinator asks a fresh synthesis subagent to produce a cited recommendation after search and document-analysis agents have finished. The synthesis agent says it lacks the findings. What is the smallest architecture correction?

  1. Assume every subagent can read the coordinator’s private message history by default.
  2. Ask the synthesis agent to invent representative citations from common websites.
  3. Have the synthesis subagent send a hidden direct message to the search agent instead of using the coordinator.
  4. Include the relevant search findings, document extracts, and source identifiers explicitly in the synthesis subagent invocation.

Explanation

Correct Answer

D:

Subagents have isolated working contexts and do not automatically inherit earlier agents’ conversations. The coordinator must pass usable facts and provenance to the new context.

Incorrect Answers

A:

Isolation prevents automatic history sharing. Without explicit context passing the synthesis agent has no reliable access to prior evidence.

B:

Fabricated citations disguise missing evidence. The coordinator should supply actual source references collected by the upstream agents.

C:

Unmanaged peer communication reduces traceability and bypasses the designed hub. An explicit coordinator handoff supplies necessary context in a controlled manner.

Question 7

An agent alternates unpredictably between customer_lookup and order_lookup when asked for an order’s shipping address. Their descriptions both say “retrieve customer information.” What should the team change first?

  1. Remove the order tool and make every request use the customer tool regardless of fields.
  2. Rely on a system prompt saying “always choose the best tool” without changing tool definitions.
  3. Describe each tool’s accepted identifiers, output fields, intended use cases and cases that belong to the other tool.
  4. Add a routing model before inspecting the descriptions of either tool.

Explanation

Correct Answer

C:

Tool descriptions are central to tool selection. Specific input/output contracts and boundaries give the model enough evidence to choose the order-oriented lookup.

Incorrect Answers

A:

Deleting a specialized tool could lose order-specific data. The actual defect is that existing tool semantics are not communicated clearly.

B:

General instructions cannot resolve overlapping tool capabilities that are described identically. Explicit boundaries reduce selection uncertainty.

D:

An extra classifier creates complexity without fixing the ambiguous interface. Clear tool descriptions are the least invasive first remedy.

Question 8

A knowledge-search MCP tool returns no matching records for a customer number. The agent retries six times because the wrapper labels every empty list as a transient error. What response model should replace it?

  1. Report an HTTP-like timeout for every no-match query until the agent finds a document.
  2. Return one generic “operation failed” message with no error category.
  3. Return a fabricated placeholder record so the agent can continue without branching.
  4. Return a successful empty result for no matches, and reserve isError plus typed retryability metadata for genuine failures.

Explanation

Correct Answer

D:

A valid empty query result is not a service fault. Typed errors let the agent retry timeouts but stop retrying impossible or policy-rejected requests.

Incorrect Answers

A:

Misclassifying absence as infrastructure failure causes needless retries and may trigger hallucinated results. Successful queries can legitimately produce zero records.

B:

A generic message cannot distinguish retryable outages from validation and permission problems. It gives the agent no principled recovery decision.

C:

A synthetic match misrepresents the source system and contaminates downstream decisions. Preserving a genuine empty result is safer and more accurate.

Question 9

A synthesis subagent is meant to assemble source-backed findings, but it repeatedly launches broad web searches instead. Its tool palette contains every search, write, deployment and accounting tool used by the whole application. Which change is most appropriate?

  1. Restrict the subagent to synthesis-relevant tools and route new complex investigations back through the coordinator.
  2. Expose additional unrelated tools so the model has a complete picture of the platform.
  3. Tell the agent to avoid search while leaving all dangerous and irrelevant tools available.
  4. Give the synthesis agent full administrative tool access so it can recover independently from all errors.

Explanation

Correct Answer

A:

Specialized, smaller tool palettes reduce misselection and preserve separation of responsibilities. Limited cross-role verification can be granted only when a measured need justifies it.

Incorrect Answers

B:

More choices make inappropriate tool selection more likely for a specialist. The symptom already demonstrates that its permissions are too broad.

C:

Prompt guidance alone does not enforce a tool-scope boundary. Restricting the actual available tools is a stronger control.

D:

Broad privileges increase unintended side-effect risk and do not match a summarization role. Coordinator-mediated recovery better preserves auditability.

Question 10

A repository team needs a shared issue-tracker MCP server configuration that works after cloning the project. Credentials must not be committed. Where should the portable server definition be kept?

  1. Add a project-scoped .mcp.json containing the server definition and environment-variable references for credentials.
  2. Commit a personal ~/.claude.json file and all developer tokens into the repository.
  3. Put every issue-tracker secret directly in CLAUDE.md beside repository instructions.
  4. Require each employee to configure an unrelated local server name and manual token in an untracked notebook.

Explanation

Correct Answer

A:

Project configuration can be versioned for the team, while token values remain outside the repository. The runtime expands configured environment references when establishing the connection.

Incorrect Answers

B:

User-level configuration is intended for personal settings, and committed secrets would expose credentials. A checked-in project definition must reference external secret values.

C:

Instruction files are not secret stores, and tool connections require actual MCP configuration. A shared definition plus externally supplied environment variables meets both needs.

D:

Manual per-person configuration drifts and undermines a portable team integration. A project-scoped template avoids duplication without committing credentials.

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