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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 16

Question 150

A developer forces Claude to call the same metadata tool on every turn of a pipeline, including after metadata has been collected and the assistant could return its finished report. The workflow loops needlessly. What is the correct change?

  1. Force the metadata tool only for the required initial step, then allow later tool choice or completion.
  2. Keep forcing metadata calls indefinitely because the model may eventually produce a final answer.
  3. Delete the metadata tool and infer fields from the model's memory.
  4. Force any tool forever so at least the model can choose a different operation.

Explanation

Correct Answer

A:

The pipeline has one true deterministic dependency: collecting metadata before subsequent processing. A named tool call can enforce that initial step, but keeping the same choice fixed after its result blocks normal progression and final output. The host application should change the tool policy according to workflow state, allowing the model to select appropriate later tools or return an end-turn response. Tool choice is a per-step orchestration decision, not a universal rule for every conversation turn.

Incorrect Answers

B:

An always-forced tool can prevent a text-only completion and repeatedly perform completed work. Repetition does not resolve the workflow dependency. The host should update tool-choice constraints when the prerequisite is satisfied. Correct state transitions need the host to revise constraints.

C:

Removing a required, authoritative extraction step undermines the pipeline's data contract. The problem is not the existence of the metadata tool but its use after completion. Enforce the initial requirement only and validate its output. Metadata should be verified before later decisions.

D:

The any setting still requires a tool invocation and does not permit straightforward final text when no further operation is needed. It may replace one unnecessary call with another. Flexible selection or completion should resume after the deterministic step. The model needs a legal path to finish.

Question 151

An internal developer assistant suddenly discovers a personal experimental MCP tool named get_issue that shadows the team's approved issue-tracker connector. One developer gets different results from colleagues. What should be investigated first?

  1. Increase the model context window so both tools can be described in more detail.
  2. Rename the team's approved tool randomly at each launch so no one can predict it.
  3. Audit active MCP server scopes, names, and effective tool discovery; disable or rename the personal collision.
  4. Trust whichever get_issue tool produces the shortest response.

Explanation

Correct Answer

C:

Claude Code can load MCP servers from different scopes, and similarly named capabilities can confuse model selection or differ by precedence. Inspect the actual visible tool catalog for this developer, including personal and project configurations, and establish a stable distinction for the approved connector. Remove or isolate the experimental integration for shared work. Test with the same issue request across clean environments to confirm that the authoritative team tool is selected consistently.

Incorrect Answers

A:

A longer context does not resolve tool namespace collisions or configuration precedence. The agent may still select an unintended personal tool. The effective discovery catalog and installation scopes need inspection, not additional narrative context. Name conflicts remain regardless of available context capacity.

B:

Unstable names make tool selection and audits harder and may break stored instructions. The underlying conflict remains if the personal connector is still exposed. Stable, intentional tool identities and scope configuration are preferable. Stable names are also necessary for testable prompts.

D:

Response length is not a proxy for authoritative issue status. A personal prototype may return stale or incomplete records. The system must identify the approved source and avoid choosing based on superficial output length. The two connectors may have very different credentials.

Question 152

A code-review subagent is instructed to search symbols across a repository. Its allowedTools list includes only Bash, even though the environment has a specialized Grep capability that the role should use for safe source searches. It repeatedly claims search is unavailable. What should be corrected?

  1. Add the relevant specialized search tool to this subagent's effective allowedTools configuration.
  2. Rename Bash to Grep in the prompt while leaving tool permissions unchanged.
  3. Provide the entire filesystem as a quoted prompt and disable tools.
  4. Allow all tools, including destructive operations, because one search tool was missing.

Explanation

Correct Answer

A:

An agent cannot invoke a tool that is not present in its authorized catalog, regardless of how clearly the prompt requests it. Update the subagent definition to include the intended Grep or other approved search operation and check the effective tool list after inheritance and configuration are applied. Keep unnecessary mutation tools out. This fixes the immediate capability mismatch without granting blanket shell access, and it allows predictable search behavior for the designated code-review role.

Incorrect Answers

B:

A text alias does not change which executable capabilities the runtime exposes. The model might mention Grep, but the actual Grep tool is still unavailable. The agent definition needs a real allowed-tools correction rather than conversational relabeling. Runtime tool discovery must match the intended role.

C:

Pasting a repository into context is inefficient and can exceed token limits. It also removes the agent's ability to locate precise source matches or inspect updates. A narrow source search tool better supports the task. File-specific context can then be retrieved on demand.

D:

Broad access is not necessary to correct a single missing capability. It increases risk and can reintroduce tool-selection confusion. The role should receive only the specific search and read operations required for its duties. Privileged access should remain tied to a genuine business need.

Question 153

A development team has a maintained issue-tracker MCP server, but only its original author can use it. Every other engineer clones the repository and sees no shared issue tools because the connector lives only in a home-directory configuration. What is the right configuration change?

  1. Copy the author's entire private home configuration into the repository.
  2. Put the approved connector definition into the project's .mcp.json and version-control it without embedded secrets.
  3. Ask each teammate to retype the author's personal API token into their settings.
  4. Leave the server user-scoped and mention its name in CLAUDE.md.

Explanation

Correct Answer

B:

Project-scoped MCP configuration is designed to make selected servers available to collaborators who work in the same repository. A reviewed .mcp.json entry documents the endpoint or server command, while each developer supplies credentials through appropriate environment or authentication mechanisms. This is distinct from a user-scoped setting that follows only one person. Team members should test the configuration from a clean clone and approve or enable the server as required by the client.

Incorrect Answers

A:

A home configuration may contain unrelated personal connectors and sensitive credentials. Copying it can leak secrets and unnecessarily broaden tool access. The team needs a curated project-level server definition with appropriate secret references and approvals. Secret handling must remain separate from project configuration.

C:

Sharing an individual token weakens accountability and may violate authorization policies. It does not establish a reproducible, approved project configuration. Use team-defined server settings and per-user or service credentials with restricted scopes instead. Audit records should identify each actor accurately.

D:

Project instructions do not install or expose MCP servers automatically. Developers without the connector definition will still lack the required tools. The shared server entry belongs in project MCP configuration; guidance can explain how to authenticate. Model memory cannot authorize a missing connector.

Question 154

An engineer accidentally committed a private prototype MCP server to .mcp.json. It opens access to an experimental personal database and does not belong in team sessions. Which scope should hold this test integration?

  1. Project scope, because all repository settings should be shared by default.
  2. Organization-wide configuration, because centralizing all experimental tools makes them easier to locate.
  3. A user-scoped or project-local private configuration excluded from the shared .mcp.json.
  4. The root CLAUDE.md file, with its access token written next to the description.

Explanation

Correct Answer

C:

The developer can keep experimental tools available for their own controlled tests without publishing them to the entire team. User scope is private to that account across projects; a local private scope can limit the connector to one checkout. Remove the prototype from version-controlled project configuration and rotate any credentials that were exposed. This preserves the intended separation between approved shared servers and individual experimentation.

Incorrect Answers

A:

Project scope deliberately distributes the connector to collaborators. That is inappropriate for an unreviewed personal prototype accessing private data. The repository should contain only approved team integrations, not experiments that expand everyone's available tools. The server's data scope would exceed the team's remit.

B:

Organization-wide exposure would widen the problem, not solve it. A prototype may have immature permissions and could be selected inadvertently by unrelated workflows. Personal experiments should remain isolated until formally reviewed for shared use. Broad installation also expands potential credential exposure.

D:

Instruction files do not provide secure secret storage or enforce tool permissions. Putting tokens into tracked text exposes credentials and may influence model behavior. The connector should be configured in an appropriate private scope with secrets managed separately. Authentication belongs in server configuration, not prompt text.

Question 155

A repo's tracked .mcp.json contains an Authorization header with a hardcoded bearer token for a shared integration. Which TWO changes should the maintainers make before others use this configuration? (SELECT TWO)

  1. Replace the literal secret with an environment-variable reference supported by Claude Code MCP configuration.
  2. Keep the same token committed but Base64-encode it so casual readers cannot recognize it.
  3. Make the token value part of the tool's description so Claude knows how to authenticate.
  4. Remove the committed credential, rotate it if exposed, and ensure new secrets never enter version control.
  5. Disable all MCP integrations permanently because one repository secret was leaked.

Explanation

Correct Answers

A:

Claude Code supports variable expansion in project MCP settings, including appropriate HTTP headers or server environment values. Referencing a deployment-provided secret keeps the shared connector definition portable without embedding a reusable credential in source control. The host must inject the variable securely for authorized users, and the team should validate that missing variables fail visibly. This is configuration hygiene, not a reason to move privileged token values into prompts or tool descriptions.

D:

Replacing the current file is only half the remediation because a secret already committed may remain accessible in repository history and cached copies. Rotate or revoke that token according to policy, then add preventive secret-scanning and configuration review. Store secret values in an approved environment or vault and commit only non-sensitive references. The shared .mcp.json should identify how authentication is supplied, never contain reusable bearer credentials itself.

Incorrect Answers

B:

Base64 is reversible encoding, not credential protection. A committed encoded token can still be decoded and misused. The team must remove the secret from tracked history or rotate it appropriately and use a secure secret-injection mechanism instead. Repository history might preserve the encoded credential permanently.

C:

Descriptions are model-visible and may appear in logs or prompts; they are not secret stores. Adding the token there increases exposure. Authentication should be handled by the connector transport or environment, not by natural-language tool metadata. Sensitive values must not enter model-visible metadata.

E:

A leakage incident requires credential remediation and configuration correction, not necessarily permanent removal of all integration capabilities. The team can keep a reviewed connector after the compromised token is rotated and secure injection is established. Broad disabling is not the direct fix.

Question 156

An engineer pastes a production API key into an MCP tool's natural-language description so that Claude 'knows which header to send.' The key appears in a downstream debug transcript. What is the safest correction?

  1. Keep the token in the description but preface it with 'confidential'.
  2. Remove the key from the tool description and inject it securely through the server's authentication configuration.
  3. Move the same token into the tool's output schema as an optional string field.
  4. Split the key into two strings in the system prompt so the model can recombine it.

Explanation

Correct Answer

B:

Credentials should be supplied to the MCP server or HTTP transport through authorized environment variables, a secret manager, or another controlled authentication path. The model should request a tool operation without needing to handle the raw key. Remove the exposed token from metadata and rotate it if its confidentiality can no longer be trusted. This separates operational authentication from model-visible descriptions and limits the risk that logs, prompts, or assistant output disclose reusable credentials.

Incorrect Answers

A:

Model-visible text can be logged, surfaced, or manipulated regardless of the label. A confidentiality warning does not prevent exposure. Tool descriptions should document required capabilities and argument contracts without embedding secrets or live authentication material. The token should be revoked if exposed.

C:

Output schemas are still part of the exposed interface contract, and credentials are not business result data. Such a field invites the model to transmit secrets as parameters or outputs. Authentication belongs below the tool-level business schema. It would contaminate the interface for unrelated calls.

D:

Splitting a credential across text segments does not create a meaningful security boundary. The model still receives enough material to reconstruct and leak it. Use a separate secret-handling mechanism outside the model context. The assistant's conversation would still contain the key.

Question 157

A team plans to implement its own MCP bridge for a common issue tracker even though a maintained and approved compatible connector already exposes issue search, comments, and updates. The custom bridge adds no unique capabilities. What is the best first option?

  1. Use the maintained existing connector with reviewed permissions and authentication scopes.
  2. Write a second connector because tool duplication improves selection accuracy.
  3. Paste issue records into prompts manually and prohibit tool use indefinitely.
  4. Create a general shell tool that can call any tracker endpoint with an admin token.

Explanation

Correct Answer

A:

A supported connector can reduce duplicate implementation effort and concentrate maintenance on documented interfaces. The team should confirm that it supplies the required issue operations, is trustworthy and supported, and can be restricted to appropriate projects and permissions. This choice avoids rebuilding routine authentication, API pagination, and error behavior for no functional gain. It does not remove the need to review provider security, tool descriptions, and the actual data scope visible to each agent.

Incorrect Answers

B:

Two nearly identical integrations can increase namespace confusion and inconsistent behaviors. Custom code also creates maintenance and security obligations without solving a missing requirement. The existing connector should be evaluated first against the team's needed operations. Namespaces should clearly indicate the chosen authoritative server.

C:

Manual copying is difficult to keep fresh and can expose unnecessary data. It also undermines interactive issue search and approved updates. A configured, scoped connector is better suited to this operational workflow. Records can change between one copy and the next.

D:

An unrestricted shell and administrator credential widen access beyond ordinary issue-management tasks. This increases the impact of prompt injection or misrouting. Existing maintained tools with least-privilege authorization are a safer starting point. Least privilege is not obtained through model instructions.

Question 158

A research firm's approval portal uses a proprietary internal workflow absent from public MCP connector catalogs. Agents must read approval status and submit requests through well-defined internal APIs. Which design is most appropriate?

  1. Invent issue-tracker data in the model's system prompt so no integration is needed.
  2. Expose a single unrestricted execute_request tool that can call any internal network endpoint.
  3. Build a small custom MCP server with typed read/status and submit-request tools plus enforced authentication.
  4. Grant the agent full database credentials and ask it to construct SQL statements.

Explanation

Correct Answer

C:

Custom integration is justified when no maintained connector covers the proprietary API. The server should define clear tool descriptions, input schemas, output contracts, authorization checks, and safe error handling for each approval action. Separate read-only status queries from request submissions and gate mutations through the organization's approval rules. This exposes only the intended internal functions to Claude while leaving privileged API credentials and access control in the server rather than model-visible text.

Incorrect Answers

A:

Invented portal records cannot reflect the authoritative approval database or changing workflow state. The application needs secure access to real operations. A prompt cannot substitute for a reliable API boundary with authorization and structured results. Approval status must be read from the actual portal.

B:

An arbitrary-request interface creates unnecessary attack surface and makes safe tool selection difficult. It could reach unrelated internal services beyond approval processing. Purpose-specific operations and validation are more appropriate for the small defined workflow. A generic endpoint is difficult to review for authorization.

D:

Direct database access would bypass the portal's validated business rules and least-privilege API surface. The agent does not need broad data-plane permissions to submit approval requests. A bounded server wrapper preserves audit and authorization semantics. The portal API offers a stronger enforcement point.

Question 159

A multi-agent research workflow repeatedly invokes a list_documents tool to discover a static collection of policy files. It only needs the document titles, identifiers, and locations to decide what to read. Which MCP feature is best for that catalog?

  1. Expose a bounded read-only MCP resource index describing available documents.
  2. Use a delete_document tool to probe whether each title exists.
  3. Ask Claude to memorize all document names and never refresh the list.
  4. Combine every full document into one huge tool response for every question.

Explanation

Correct Answer

A:

MCP resources can represent accessible reference information without requiring the model to execute a separate mutation-oriented tool just to discover the collection. A small catalog containing names, identifiers, and URIs helps the agent choose relevant documents and avoids repeated wide tool calls. The server should publish only entries the caller may access and keep the index current when documents change. A catalog is not authority to read protected content; subsequent resource retrieval still needs authorization.

Incorrect Answers

B:

Deletion is a side effect unrelated to catalog discovery and could destroy useful records. It does not establish a safe list of available resources. A read-only index supplies this metadata directly without mutating repository state. Discovery must not modify application records.

C:

Model memory is not a dependable source of current catalog metadata, especially after documents are added or renamed. A maintained server resource provides authoritative identifiers. The agent should not assume a remembered list remains complete. New revisions require fresh identifiers and permission checks.

D:

Returning full content when only a directory is needed increases context cost and can mix unrelated material. It also increases accidental exposure of information the agent did not need. A bounded index supports targeted retrieval and clearer provenance. The index should contain only necessary metadata.

Question 160

A coding assistant repeatedly Greps the local repository for 'open incident' even though the authoritative incident state lives in an issue-tracker MCP server. Both search descriptions look similar to Claude. What should the integration owner change first?

  1. Rename the issue tool to something shorter without changing its description.
  2. Clarify the issue-query tool's description as the authoritative remote source for current issue status, contrasting it with Grep's local-file search.
  3. Force the local Grep tool for all incident questions because it is always available.
  4. Disable the issue-tracker server and summarize its last cached results as current.

Explanation

Correct Answer

B:

The two tools serve different evidence sources. The MCP description should state that it queries live issue records and accepts an incident key or status filter, while Grep searches bytes in the checked-out repository. Making the remote authoritative role explicit can improve selection when the user asks for current incident state. The team should evaluate actual ambiguous requests and verify the connector is available and permitted; descriptions do not fix a disconnected server or missing credentials.

Incorrect Answers

A:

A shorter name does not necessarily distinguish source-of-truth records from local text matches. The model needs to understand the operation's data scope, not just recognize a memorable identifier. The contract should state when to use each tool. Description semantics are what drive meaningful selection.

C:

Local files may contain issue references but cannot guarantee current tracker state. Forcing Grep would bake the misrouting into the application rather than correct it. The agent should use the remote issue connector when verified live status is required. The system would miss the latest incident state.

D:

Cached data can be useful when clearly labeled stale, but it cannot replace live authoritative issue state without qualification. Removing the connector would eliminate the required source. Better tool descriptions and access checks address the original selection error. Staleness must be disclosed when live access fails.

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