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Anthropic CCA-F Practice Test 25

Question 240

A developer copies an MCP server URL from a forum and grants it access to company documents. What should happen first?

  1. Rediscover capabilities and revalidate outstanding calls against the new server state
  2. Test MCP transport connectivity and server availability before changing tool descriptions
  3. Review the server operator, requested privileges and data handling before connection
  4. Configure the server in the appropriate user-local Claude configuration

Explanation

Correct Answer

C:

MCP tools run across a trust boundary. Endpoint validation and explicit authorization are required before exposing internal data. An unfamiliar external MCP server is a privileged integration boundary. Review who operates it, what data it can access and how it stores or forwards content before attaching company documents.

Incorrect Answers

A:

Connection recovery may alter the available interface. This alternative does not establish how to vet remote MCP providers before granting sensitive access in the stated workflow.

B:

A transport failure prevents correct tool discovery or invocation even with a perfect schema. The decisive requirement here is to vet remote MCP providers before granting sensitive access.

D:

Personal configuration isolates a developer's private tooling from project-shared settings. It would leave the stated need to vet remote MCP providers before granting sensitive access unresolved.

Question 241

An MCP session reconnects after a server restart but the tool list has changed. What should the host do?

  1. Keep the previous cached tool schema after reconnecting and assume the server's capabilities are unchanged
  2. Rediscover capabilities and revalidate outstanding calls against the new server state
  3. Authenticated actor, tool name, arguments metadata, result and correlation identifier
  4. Authorize tenant access against the authenticated caller on every invocation

Explanation

Correct Answer

B:

Connection recovery may alter the available interface. Using stale tool schemas can produce invalid or unsafe calls. After a server reconnect, available tool names or schemas may differ. Re-discover capabilities and revalidate queued invocations before executing arguments built for the earlier server state.

Incorrect Answers

A:

Keeping a stale cached schema assumes that the restarted MCP server still supports the old tool contract. That assumption can misroute calls or send invalid parameters. Rediscover the active tools and revalidate any outstanding requests against the server's current capabilities before proceeding.

C:

A server-side audit record ties a side effect to the requester and outcome. Although useful elsewhere, it is not the direct mechanism to refresh tool discovery after MCP reconnects.

D:

A caller-supplied tenant identifier is not proof of permission. The proposed option cannot provide the specific “Rediscover capabilities and revalidate outstanding calls against the new server state” behavior that the case requires. Re-discover capabilities and revalidate queued invocations before executing arguments built for the earlier server state.

Question 242

A developer knows a function name but not which of hundreds of files defines it. Which built-in tool is best first?

  1. Use Grep to locate text matches and then Read the relevant files
  2. Use Write to create the new file with the intended content
  3. Use Glob to find paths matching the filename pattern
  4. Use Bash with an appropriately scoped command and execution permission

Explanation

Correct Answer

A:

Grep searches contents efficiently. Reading arbitrary files first or changing code before locating definitions adds unnecessary work. Grep is for locating symbols and text inside files, then Read provides enough surrounding implementation to identify the real definition. Opening every source file before searching wastes context and may still miss the target.

Incorrect Answers

B:

Write is suited for creating or replacing a complete file. That addresses a different part of the system, not the requirement to locate function usage before inspecting source bodies.

C:

Glob searches file paths and patterns; it does not search the contents of files for a named function. Use Grep to locate the symbol definition or references, then Read the matching source files. A filename pattern would miss functions defined in unpredictably named modules.

D:

A shell grep may be possible with appropriate permission, but invoking Bash is broader than necessary when the built-in Grep tool is available for text search. Use the narrower search capability and inspect matching definitions with Read rather than issuing an unrelated command.

Question 243

A support-system designer wants an MCP catalog of read-only product specifications and a separate operation that changes warranty registration. How should those different capabilities be exposed?

  1. Publish both as arbitrary prompt text and let the client parse free-form commands
  2. Present the specifications as MCP resources and the state-changing registration operation as an explicitly permissioned tool
  3. Use only a resource URI for registration so any text reader can silently perform writes
  4. Grant the catalog reader broad administrative rights because it sees both kinds of data

Explanation

Correct Answer

B:

MCP resources are an appropriate way to expose readable product specifications because a client can retrieve that reference material without changing business state. Warranty registration is different: it performs a write and should be an explicit, typed MCP tool with authentication, authorization and validated arguments. Keeping the read and write capabilities separate makes side effects auditable and prevents prose from becoming an implicit registration command.

Incorrect Answers

A:

MCP resources are suited to addressable context such as product specifications, while tools expose callable operations with defined inputs and results. Registering a warranty changes business state and therefore needs an explicit tool contract and authorization. Keeping read context separate from actions reduces accidental writes.

C:

A resource URI identifies content, not a universal authorization to perform arbitrary state changes. Treating read access as write authority confuses MCP capability types and risks unintended registrations.

D:

Access to a public specification catalog should not imply administrative control of customer warranty data. Separate permissions are needed so a read-only assistant cannot trigger state-changing actions.

Question 244

An MCP configuration includes a service credential that should not be committed. How should this server capability be configured?

  1. Validate executable, arguments and environment before blaming model tool selection
  2. Reference a controlled environment variable or external secret instead of embedding the value
  3. Configure credential and resource scope for the intended consumer
  4. Confirm the server connection and advertised tool names in the live tool catalog

Explanation

Correct Answer

B:

Secret injection separates deployment credentials from shared configuration text. For this situation, the system should reference a controlled environment variable or external secret instead of embedding the value. The factual trigger is an MCP configuration includes a service credential that should not be committed. Check both tool discovery metadata and the caller authorization before relying on a remote capability.

Incorrect Answers

A:

Connection failures must be diagnosed at transport and process setup rather than inside prompt instructions. Here, an MCP configuration includes a service credential that should not be committed. Reference a controlled environment variable or external secret instead of embedding the value. Secret injection separates deployment credentials from shared configuration text.

C:

A shared service address must not imply universal permission to underlying data. Here, an MCP configuration includes a service credential that should not be committed. Reference a controlled environment variable or external secret instead of embedding the value. Secret injection separates deployment credentials from shared configuration text.

D:

Successful file configuration is not evidence that a running client loaded the server and registered its capabilities. The required action is “Reference a controlled environment variable or external secret instead of embedding the value”; the other measure addresses a separate concern. Secret injection separates deployment credentials from shared configuration text.

Question 245

An MCP server fails to start because its executable path is missing. Which MCP integration step resolves the issue?

  1. Configure credential and resource scope for the intended consumer
  2. Confirm the server connection and advertised tool names in the live tool catalog
  3. Validate executable, arguments and environment before blaming model tool selection
  4. Coordinate client migration or versioned compatibility before switching consumers

Explanation

Correct Answer

C:

When an MCP server fails to start because its executable path is missing, the system should validate executable, arguments and environment before blaming model tool selection. Connection failures must be diagnosed at transport and process setup rather than inside prompt instructions. A named endpoint is not proof of access; keep connection and permission failures visible to the coordinator.

Incorrect Answers

A:

A shared service address must not imply universal permission to underlying data. This is not a substitute for “Validate executable, arguments and environment before blaming model tool selection”; that control is necessary in the stated circumstances. Connection failures must be diagnosed at transport and process setup rather than inside prompt instructions.

B:

Successful file configuration is not evidence that a running client loaded the server and registered its capabilities. Here, an MCP server fails to start because its executable path is missing. Validate executable, arguments and environment before blaming model tool selection. Connection failures must be diagnosed at transport and process setup rather than inside prompt instructions.

D:

Schema compatibility matters because an otherwise reachable server can reject established agent calls. The direct remedy is “Validate executable, arguments and environment before blaming model tool selection”, which the alternative does not itself accomplish. Connection failures must be diagnosed at transport and process setup rather than inside prompt instructions.

Question 246

A team shares an MCP endpoint but needs workspace-specific authorizations. Which MCP integration change is appropriate?

  1. Confirm the server connection and advertised tool names in the live tool catalog
  2. Coordinate client migration or versioned compatibility before switching consumers
  3. Document required server commands, environment placeholders and security boundaries
  4. Configure credential and resource scope for the intended consumer

Explanation

Correct Answer

D:

A team shares an MCP endpoint but needs workspace-specific authorizations. The relevant control is to configure credential and resource scope for the intended consumer. A shared service address must not imply universal permission to underlying data. Check both tool discovery metadata and the caller authorization before relying on a remote capability.

Incorrect Answers

A:

Successful file configuration is not evidence that a running client loaded the server and registered its capabilities. Here, a team shares an MCP endpoint but needs workspace-specific authorizations. Configure credential and resource scope for the intended consumer. A shared service address must not imply universal permission to underlying data.

B:

Schema compatibility matters because an otherwise reachable server can reject established agent calls. This is not a substitute for “Configure credential and resource scope for the intended consumer”; that control is necessary in the stated circumstances. A shared service address must not imply universal permission to underlying data.

C:

Portable configuration should exclude secrets while retaining enough details to reproduce tool availability. Here, a team shares an MCP endpoint but needs workspace-specific authorizations. Configure credential and resource scope for the intended consumer. A shared service address must not imply universal permission to underlying data.

Question 247

A tool is installed but cannot be discovered in the active session. How should this server capability be configured?

  1. Confirm the server connection and advertised tool names in the live tool catalog
  2. Coordinate client migration or versioned compatibility before switching consumers
  3. Document required server commands, environment placeholders and security boundaries
  4. Document the intended MCP server in a README example without enabling or checking it in the active client session

Explanation

Correct Answer

A:

The relevant control is to confirm the server connection and advertised tool names in the live tool catalog. Successful file configuration is not evidence that a running client loaded the server and registered its capabilities. This matters when a tool is installed but cannot be discovered in the active session. A named endpoint is not proof of access; keep connection and permission failures visible to the coordinator.

Incorrect Answers

B:

Schema compatibility matters because an otherwise reachable server can reject established agent calls. The required action is “Confirm the server connection and advertised tool names in the live tool catalog”; the other measure addresses a separate concern. Successful file configuration is not evidence that a running client loaded the server and registered its capabilities.

C:

Portable configuration should exclude secrets while retaining enough details to reproduce tool availability. Here, a tool is installed but cannot be discovered in the active session. Confirm the server connection and advertised tool names in the live tool catalog. Successful file configuration is not evidence that a running client loaded the server and registered its capabilities.

D:

A static README or example configuration may help installation, but it does not prove the MCP server connected or exposed its tool names to the current session. Inspect the runtime connection, initialization errors and advertised capabilities; if the connection is absent, correct and activate the supported configuration, then rediscover the tools.

Question 248

An MCP server is updated with incompatible argument fields. Which MCP integration step resolves the issue?

  1. Document required server commands, environment placeholders and security boundaries
  2. Coordinate client migration or versioned compatibility before switching consumers
  3. Store the intended project connection in its supported .mcp.json configuration
  4. Reference a controlled environment variable or external secret instead of embedding the value

Explanation

Correct Answer

B:

Schema compatibility matters because an otherwise reachable server can reject established agent calls. For this situation, the system should coordinate client migration or versioned compatibility before switching consumers. The factual trigger is an MCP server is updated with incompatible argument fields. Check both tool discovery metadata and the caller authorization before relying on a remote capability.

Incorrect Answers

A:

Portable configuration should exclude secrets while retaining enough details to reproduce tool availability. The proposed option cannot provide the specific “Coordinate client migration or versioned compatibility before switching consumers” behavior that the case requires. Schema compatibility matters because an otherwise reachable server can reject established agent calls.

C:

Repository-scoped MCP configuration makes required tool endpoints reproducible for the project. The issue here is an MCP server is updated with incompatible argument fields, so the relevant control is to coordinate client migration or versioned compatibility before switching consumers. Schema compatibility matters because an otherwise reachable server can reject established agent calls.

D:

Secret injection separates deployment credentials from shared configuration text. This is not a substitute for “Coordinate client migration or versioned compatibility before switching consumers”; that control is necessary in the stated circumstances. Schema compatibility matters because an otherwise reachable server can reject established agent calls.

Question 249

A team already tracks its MCP server definition in project-scoped .mcp.json with secret placeholders, but new developers cannot tell which executable, arguments or environment variables to supply. What additional integration work makes onboarding reproducible?

  1. Duplicate the same .mcp.json definition without documenting any required local setup
  2. Commit actual production MCP access tokens next to the project configuration
  3. Document the required server command, arguments, environment placeholders and permission boundaries
  4. Validate only one developer’s local executable path and assume all other workstations use it

Explanation

Correct Answer

C:

Once the shared MCP definition exists, onboarding requires clear instructions for the executable to install, the command and arguments used to start it, and the environment variables to supply through secure configuration. Documenting authorization scope also prevents a working local connection from being mistaken for permission to access every resource.

Incorrect Answers

A:

A duplicate project file does not tell contributors which server executable, command-line flags or environment placeholders they need. The configuration already exists. Repeating it without guidance leaves the original onboarding problem unresolved and can introduce divergent definitions.

B:

Publishing secret tokens in version control creates credential exposure and does not provide safe reproducible onboarding. New contributors should configure their own authorized secrets through a secure environment or secret manager, not receive production credentials embedded in a repository.

D:

A path that works on one workstation does not establish reproducibility across operating systems, local installations and CI environments. Provide portable setup instructions and required configuration placeholders, then verify the process on a fresh development environment rather than depending on one hard-coded path.

Question 250

A developer needs every test file matching **/*.spec.ts in a repository. Which built-in tool is appropriate?

  1. Use Grep to locate text matches and then Read the relevant files
  2. Use Glob to find paths matching the filename pattern
  3. Use Write for the complete generated content after confirming replacement is authorized
  4. Use Bash with an appropriately scoped command and execution permission

Explanation

Correct Answer

B:

Glob searches the repository's path names and returns files that match a specified filename pattern, which is exactly what the **/*.spec.ts request needs. Grep searches inside files for matching text and does not directly enumerate every matching path by extension. Apply the correct repository root and exclusion settings, then inspect selected files with Read if their contents are needed. Do not use a file-writing command for path discovery.

Incorrect Answers

A:

Grep looks for text matches inside files, whereas the requirement is to list paths that match **/*.spec.ts regardless of their contents. Use Glob to discover the matching test filenames; Grep could miss a matching file that does not contain the searched text.

C:

Whole-file writing is suitable when the entire file is intentionally regenerated. This alternative does not establish how to discover files by path or naming convention in the stated workflow.

D:

Bash can enumerate paths if command execution is authorized, but it grants more capability than the file-pattern discovery task requires. Glob directly matches the requested **/*.spec.ts filenames without running a shell command or risking command side effects.

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