Anthropic CCDV-F Questions Answers

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Anthropic CCDV-F Sample Questions

An agent's context is dominated by tool definitions: it connects to four MCP servers exposing sixty tools in total, of which any given task uses two or three. Selection accuracy has fallen and per-request cost has risen.Which approach best addresses both symptoms?

A. Scope the tool surface to the task — connect only the servers a given workflow requires, and delegate specialized work to subagents that each carry a narrow, purpose-fit tool set.
B. Combine all sixty tools into a single dispatcher tool that takes an operation name as a parameter.
C. Move the tool definitions into the system prompt, which is not counted toward context.
D. Accept the situation, since tool definitions are a fixed cost of MCP integration.

A team is designing an MCP server that will expose an internal analytics platform to multiple Claude applications, including one accessible to external contractors. Which three design decisions are most important? 

A. Authenticate and authorize at the server boundary, resolving the caller's identity rather than treating all connected clients as equally privileged.
B. Design tool granularity deliberately — expose a small set of well-described, purpose-scoped operations rather than a thin passthrough to every underlying API endpoint.
C. Return errors as structured, informative results the calling model can reason about, without leaking internal implementation detail such as stack traces or connection strings.
D. Expose the analytics platform's raw SQL interface as a single tool, so the model has maximum flexibility.
E. Trust the calling model's stated identity claims, since the client harness has already authenticated the user.

An architect must decide, for each of several capabilities, whether to implement it as a built-in tool, a custom tool, a Skill, or an MCP server. Which three statements correctly characterize the decision criteria

A. A capability requiring live, authenticated access to an external system that several distinct applications must share is a strong candidate for an MCP server.
B. Procedural knowledge — how to perform a task, with templates and conventions but no external execution — is best packaged as a Skill.
C. A single application's narrow, private function with a well-defined input contract is appropriately implemented as a custom tool defined in that application.
D. Any capability implementable as a Skill should be implemented as a Skill, since Skills are always cheaper than tools.
E. MCP servers should be preferred over custom tools in all cases, since protocol-based integration is inherently more maintainable.

An agent is given fourteen tools, several with overlapping purposes. Tool selection accuracy has degraded noticeably compared with an earlier version that had four tools.Which explanation and remedy are most accurate?

A. A large, overlapping tool surface makes selection harder and consumes context on every request; consolidate genuinely redundant tools, sharpen descriptions to disambiguate the rest, and expose only the tools relevant to the current task.
B. The API caps agents at ten tools, so the four additional tools are silently ignored.
C. Tool count has no effect on selection; the regression must be caused by a model version change.
D. Selection accuracy is restored by listing the tools in alphabetical order, which the model uses as a priority ranking.

An organization has a detailed internal procedure for producing quarterly compliance reports: a specific document structure, mandatory sections, required disclaimers, and a review checklist. They want Claude to follow this procedure consistently without pasting the full procedure into every prompt.Which mechanism is the best fit?

A. A Skill that packages the procedure, its supporting templates, and its instructions, loaded when the task calls for it.
B. An MCP server, since procedural knowledge must be served over a protocol to be reusable.
C. A custom tool whose input_schema encodes each section of the report.
D. A permanently enlarged system prompt containing the full procedure on every request regardless of task.

A team has built an MCP server. It must be consumed by a locally running developer tool on individual workstations, and also by a centrally hosted application shared by many users.What is the most appropriate transport decision?

A. Use a local process transport communicating over standard input and output for the workstation case, and an HTTP-based transport for the centrally hosted case.
B. Use a local process transport for both, running the server as a subprocess of the central application per user.
C. Use an HTTP-based transport for both, requiring each workstation to expose a listening port.
D. Transport is not configurable in MCP; all servers communicate over a fixed protocol binding.

A tool that queries an external inventory service intermittently times out. Currently, when it fails, the application raises an exception that aborts the whole agent run. Which two changes produce better agent behavior? 

A. Return a structured tool_result marked as an error, with a concise description of what failed, so the model can decide whether to retry, try another approach, or report the limitation.
B. Return a fabricated but plausible inventory record so the agent can continue without interruption.
C. Apply bounded retry with backoff inside the tool implementation for transient failures, before surfacing the error to the model.
D. Remove the tool from the agent's tool list whenever the external service is degraded, without informing the model.
E. Return an empty successful result, since an empty response is semantically equivalent to a failure.

An organization has a proprietary internal reporting system with a REST API. Four separate Claude applications, maintained by three different teams, all need to query it. The reporting API evolves independently of any one application.Which approach best fits these constraints?

A. Implement an MCP server exposing the reporting operations as tools, and connect each application 
A. Implement an MCP server exposing the reporting operations as tools, and connect each application to it.
B. Define a duplicate set of custom tools inside each of the four applications.
C. Write a Skill in each application that documents the REST endpoints as prose for the model to follow.
D. Paste the most recent report data into each application's system prompt on a nightly schedule.

An agent has access to two tools, search_customers and search_orders. Claude frequently calls the wrong one, and often omits required parameters. Which two changes are most likely to improve tool-selection accuracy?

A. Rewrite each tool description to state precisely when the tool should and should not be used, including how it differs from the adjacent tool.
B. Register both tools under a single generic search name and let the model pass a type argument.
C. Tighten the input_schema for each tool — mark required fields, constrain enums, and describe each parameter's meaning and format.
D. Lower temperature to 0, which forces schema-valid tool arguments.
E. Move the tool definitions into the system prompt as prose instead of using the tools parameter.

A developer defines a get_order_status tool. Claude returns a response with stop_reason of tool_use containing a tool_use content block. The developer executes the lookup against their order database and now needs to give the result back to Claude.How should the result be returned?

A. As a new user message containing a tool_result content block that references the originatingtool_use id.
B. As a new system parameter value containing the serialized lookup result.
C. As an assistant message containing a tool_result content block, since the tool acts on the assistant's behalf.
D. As a plain-text user message describing the result in natural language, with no structural block.

A financial reporting pipeline consumes Claude-generated figures. The output is schema-valid and confidently worded, yet a quarterly reconciliation reveals that several figures were plausible but incorrect, and none were flagged. Which combination of measures best addresses this class of failure? 

A. Add deterministic verification appropriate to the domain — recomputing derived values, crosschecking totals against source records, and enforcing range and consistency rules — and route violations to human review rather than treating schema validity as correctness.
B. Instruct the model to state a confidence score with each figure and accept any figure scored above 90%.
C. Regenerate each figure three times and accept the value that appears most often.
D. Increase the model tier, since higher-capability models do not produce incorrect figures.

An agent working on a long task uses automatic compaction: when context approaches its limit, earlier history is summarized and replaced. After several compactions, the agent begins violating constraints that were established at the very beginning of the session. What is the most effective structural remedy?

A. Persist the durable constraints outside the compactable history — in the system prompt or a reinjected memory record — so they survive every compaction rather than depending on being carried through summarization.
B. Disable compaction and allow the context to grow until the request is rejected.
C. Increase the compaction threshold so compaction happens less often, delaying the problem.
D. Instruct the model to remember the constraints, since explicit instruction improves recall across compaction.

An organization runs Claude-powered services across development, staging, and production. A security review recommends improvements to credential handling.Which practice provides the strongest overall posture?

A. Issue distinct credentials per environment and per service, store them in a managed secret store with audited access, rotate them on a defined schedule and immediately on suspected exposure, and scope each credential to the least privilege its workload requires.
B. Use one organization-wide credential across all environments, stored in a secret manager, so there is a single object to rotate.
C. Issue distinct credentials per environment but store them in the CI system's plaintext environment variable configuration for convenience.
D. Rotate a shared credential annually and rely on network egress restrictions as the primary control.

A team is deploying an agent with write access to production systems. They are designing a layered guardrail architecture. Which three controls provide genuine, independent defense? 

A. Scoping the agent's credentials to the minimum permissions its tasks require, so that even a fully compromised agent cannot exceed that scope.
B. Deterministic pre-execution checks — implemented as hooks or authorization middleware — that block classes of destructive operation regardless of model intent.
C. Output validation and policy screening applied to model-proposed actions before they are dispatched, with anomalous proposals routed to human review.
D. A system prompt instructing the agent to be careful with production systems.
E. Asking the agent to confirm its own intentions before each write, and proceeding when it answers affirmatively.

A prompt performs well on the development eval set but degrades sharply on real production inputs, which are messier, longer, and occasionally contain irrelevant or contradictory information. Which two prompt-level changes are most likely to close the gap?

A. Add explicit instructions for handling degenerate inputs — what to do when required information is missing, when sources conflict, and when the request falls outside scope.
B. Expand the eval set to include representative messy production inputs, and iterate the prompt against those cases specifically.
C. Increase the number of few-shot examples drawn from the clean development set.
D. Instruct the model to always produce an answer, since abstention reduces measured coverage.
E. Raise max_tokens so the model has room to work through the messier inputs. 

Anthropic CCDV-F Reviews