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Anthropic CCA-F Practice Test 27

Question 260

A coding agent starts by reading every file in a monorepo and exhausts context. Which exploration tactic is better?

  1. Use Glob to find paths matching the filename pattern
  2. Use a targeted Edit that preserves all unrelated content
  3. Use Write for the complete generated content after confirming replacement is authorized
  4. Use Glob to map relevant paths and Grep for symbols before selective Read

Explanation

Correct Answer

D:

Progressive discovery limits context consumption while retaining the files needed for the task. Full repository dumps are rarely necessary. Map likely file paths using Glob and locate specific symbols with Grep before opening a small set of relevant files. This conserves context for understanding behavior and testing the fix.

Incorrect Answers

A:

Glob alone maps file locations but does not find the relevant function names and references for selective reading. Combine path filtering with Grep on symbols, then Read only the matched modules instead of loading the whole monorepo into context.

B:

Edit is a precise modification operation, not an exploration strategy. The agent has not yet located the relevant code, so making edits now risks changing the wrong module. First narrow paths with Glob and locate symbols with Grep, then read the necessary context.

C:

Write is appropriate only after the full replacement content is validated and authorized. It does not solve the early discovery problem of reading far too many files. Locate relevant paths and symbols before deciding whether any rewrite is warranted.

Question 261

An architect is asked to explain a dependency graph already included in the user prompt. Which tool is necessary?

  1. No filesystem tool is needed if the provided information fully answers the question
  2. Use Write to create the new file with the intended content
  3. Use Glob to find paths matching the filename pattern
  4. Use Write for the complete generated content after confirming replacement is authorized

Explanation

Correct Answer

A:

Tool calls should serve a genuine information or execution need. Unnecessary Bash or file access increases latency and risk. Invoking filesystem tools adds side effects, latency and tool cost without providing new evidence when the supplied graph already contains the required information. Answer directly from the user's graph and state any explicit limitations.

Incorrect Answers

B:

Write is suited for creating or replacing a complete file. This alternative does not establish how to avoid unnecessary tool execution for self-contained reasoning in the stated workflow.

C:

Glob resolves path patterns and extensions without searching full file contents. Although useful elsewhere, it is not the direct mechanism to avoid unnecessary tool execution for self-contained reasoning.

D:

Whole-file writing is suitable when the entire file is intentionally regenerated. The scenario instead requires a way to avoid unnecessary tool execution for self-contained reasoning.

Question 262

A build process requires overwriting a generated configuration file from a validated template. Which tool is appropriate?

  1. Append additional instructions to the generated configuration while leaving obsolete contents untouched
  2. Use Write to create the new file with the intended content
  3. Use Edit for a targeted replacement after inspecting surrounding context
  4. Use Write for the complete generated content after confirming replacement is authorized

Explanation

Correct Answer

D:

Whole-file writing is suitable when the entire file is intentionally regenerated. It is not the default for tiny surgical changes. Write is appropriate for intentionally replacing a complete generated artifact after verifying the template and destination. A targeted Edit would be safer for small human-maintained changes, but not for an authorized full regeneration.

Incorrect Answers

A:

When the authorized operation requires replacing complete generated content, an uncontrolled append can produce contradictory or invalid configuration. The Write operation should use the validated replacement and scope.

B:

Write is suited for creating or replacing a complete file. That addresses a different part of the system, not the requirement to replace entire generated outputs only when intended.

C:

Edit changes a selected span in an existing file, but this build process is replacing a complete generated configuration from a validated template. Write is the appropriate whole-file operation after confirming that generated output is authorized and reproducible.

Question 263

An assistant claims to have sent an email even though no mail tool is available in its assigned catalog. What should the orchestrator enforce?

  1. Declare the email sent when generated assistant prose says 'sent' despite no mail tool execution
  2. Avoid claiming fresh external verification and disclose the missing tool capability
  3. Keep restarts in a separately approved execution workflow instead of the default research catalog
  4. Require a recorded permitted tool invocation and successful result before reporting an external action complete

Explanation

Correct Answer

D:

Model text is not evidence of an external side effect. Completion must be tied to a real authorized tool call and its returned status. An email can only be reported sent after an authorized sending tool returned success, including a provider reference or accepted status. Language-model intent alone cannot transmit a message or prove delivery.

Incorrect Answers

A:

Fluent assistant prose saying an email was sent is not evidence of external delivery. Without a permitted mail tool invocation and successful result, the application cannot honestly claim that side effect occurred. Record the action as unperformed or provide a draft instead.

B:

A model cannot infer current database state without access. The decisive requirement here is to verify external actions through tool results rather than prose claims.

C:

Occasional need does not justify permanent broad privilege. This alternative does not establish how to verify external actions through tool results rather than prose claims in the stated workflow.

Question 264

An agent searches for a function across a monorepo with Grep, but the output is truncated after thousands of matches. What should the next search do before making a code change?

  1. Assume the omitted results contain no additional callers and modify the first file
  2. Narrow the search by relevant path patterns and symbol context, then inspect selected matches with Read
  3. Open every binary and generated file to ensure the output is even larger
  4. Replace the function immediately and use the absence of a build error as sole evidence of safety

Explanation

Correct Answer

B:

When Grep output is truncated, the visible matches are only a partial sample of the repository and cannot justify a comprehensive edit. Narrow the search to the owning package or extension pattern and an exact symbol, then use Read on the relevant files and tests. This scoped approach identifies omitted references and preserves context before the agent changes dependent code.

Incorrect Answers

A:

Truncated search output is incomplete evidence, not proof that all references were found. Reduce the search scope using known packages, filename patterns or more precise symbol context, then Read the relevant call sites. Record remaining uncertainty if the search cannot be made complete under the budget.

C:

Reading generated assets and binaries indiscriminately increases context cost without improving targeted source understanding. Search should follow the relevant code path and expand only when dependency evidence requires it.

D:

Passing one build is helpful but does not establish the complete impact of a renamed public symbol. The agent should inspect the actual call graph and run relevant tests rather than use a speculative edit as discovery.

Question 265

An agent knows which source files to inspect for a bug. What file or command tool choice should the agent make?

  1. Use Grep for content search instead of enumerating filenames
  2. Use Edit with a precise scoped replacement rather than rewriting the whole file blindly
  3. Use Read on the selected files rather than a broad shell dump
  4. Use Write to create the reviewed new file

Explanation

Correct Answer

C:

When an agent knows which source files to inspect for a bug, the system should use Read on the selected files rather than a broad shell dump. Targeted file reads preserve context and avoid unnecessary data exposure. Use precise read/edit boundaries and check command exit status rather than trusting reassuring standard output.

Incorrect Answers

A:

Content searching finds textual references while path discovery alone cannot. This is not a substitute for “Use Read on the selected files rather than a broad shell dump”; that control is necessary in the stated circumstances. Targeted file reads preserve context and avoid unnecessary data exposure.

B:

Localized edits reduce unrelated changes and preserve surrounding code. The issue here is an agent knows which source files to inspect for a bug, so the relevant control is to use Read on the selected files rather than a broad shell dump. Targeted file reads preserve context and avoid unnecessary data exposure.

D:

New-file creation differs from modifying an existing file and should respect allowed paths. The issue here is an agent knows which source files to inspect for a bug, so the relevant control is to use Read on the selected files rather than a broad shell dump. Targeted file reads preserve context and avoid unnecessary data exposure.

Question 266

A programmer wants to locate occurrences of an API name. Which action most safely meets the stated need?

  1. Use Edit with a precise scoped replacement rather than rewriting the whole file blindly
  2. Use Write to create the reviewed new file
  3. Use Bash with validated command permissions and inspect the exit status
  4. Use Grep for content search instead of enumerating filenames

Explanation

Correct Answer

D:

A programmer wants to locate occurrences of an API name. The relevant control is to use Grep for content search instead of enumerating filenames. Content searching finds textual references while path discovery alone cannot. Validate the actual command, file path or content representation before recording the operation as successful.

Incorrect Answers

A:

Localized edits reduce unrelated changes and preserve surrounding code. The issue here is a programmer wants to locate occurrences of an API name, so the relevant control is to use Grep for content search instead of enumerating filenames. Content searching finds textual references while path discovery alone cannot.

B:

Write creates or replaces file contents; it does not search the repository for every occurrence of an API symbol. Creating a new file cannot reveal which existing call sites refer to that symbol. Use Grep with a scoped content query to identify references first, then inspect the relevant files before deciding whether an edit is needed.

C:

Shell execution supplies runtime evidence but must remain subject to tool and command restrictions. The issue here is a programmer wants to locate occurrences of an API name, so the relevant control is to use Grep for content search instead of enumerating filenames. Content searching finds textual references while path discovery alone cannot.

Question 267

An Edit operation fails because a short configuration string occurs in four sections of the same file. Only one section should change. What is the safest next step?

  1. Use Write to replace the entire file with only the new configuration line
  2. Read the surrounding sections and retry Edit with a uniquely identifying match scoped to the intended location
  3. Change all four occurrences so the command no longer complains about ambiguity
  4. Delete the file and recreate it without checking version history or formatting

Explanation

Correct Answer

B:

Edit must identify the precise occurrence to replace. If the target text appears four times, read the neighboring sections and retry with a unique longer match or an approved context-specific range. An indiscriminate replacement risks changing all four settings; overwriting the whole file to work around ambiguous matching could discard unrelated configuration values and comments.

Incorrect Answers

A:

The ambiguity is in the text anchor, not proof that all four occurrences should change. Inspect the file, identify the target's neighboring context, then make a precise replacement that matches exactly one section. Verify the diff to ensure unrelated settings and formatting were preserved.

C:

All four matches may govern different environments or features. Changing them blindly expands scope and could create multiple outages when only one setting was authorized for revision.

D:

Deleting and recreating the file loses provenance and risks dropping permissions or line endings. A scoped Edit based on fresh context addresses the actual collision with less collateral change.

Question 268

A generated API client contains the obsolete name of a server field. Its header says the file is regenerated from an interface schema. Which tool sequence fixes the durable source of the mismatch?

  1. Edit the generated client directly and skip all regeneration so the change survives future builds
  2. Use Read to identify the authoritative schema, make an approved scoped source change, and run the generator and tests with Bash
  3. Delete the generator configuration and allow the model to reconstruct it later
  4. Search unrelated README files for the old name and treat that as a complete fix

Explanation

Correct Answer

B:

The generated client is downstream of the interface schema, so editing only the generated file would be lost on the next build. First use Read to locate the authoritative schema and confirm the intended field name. Modify that source under the approved change scope, regenerate the client with the supported command and run focused tests for both the generated type and its consumers.

Incorrect Answers

A:

Generated client output is not the source of truth. First inspect the schema or generator input, edit that authoritative definition under change control, then run the approved generation command and focused tests. Verify the regenerated client contains the intended field without unrelated modifications.

C:

Removing the generator would break repeatable client builds and discard the interface contract. Preserving a reproducible source-to-artifact relationship is part of the requirement, not an optional convenience.

D:

Documentation may help identify the old field but does not update compiled clients or the schema that creates them. The actual fix must change the authoritative input and rerun generation.

Question 269

A Bash tool runs a linter that prints 'all checks passed' but exits with status 2 because its configuration could not load. What evidence should the controller use to decide whether validation succeeded?

  1. Accept the final stdout line as sufficient proof and ignore the process return value
  2. Require a successful process exit status plus expected validation artifacts; report a configuration error otherwise
  3. Retry the same command indefinitely without recording the configuration failure
  4. Delete the linter configuration so its next invocation always exits zero

Explanation

Correct Answer

B:

The process exit status is authoritative for determining whether the linter completed successfully; status 2 is a failure even when standard output contains reassuring text. Check the failure details and expected report artifacts before recording validation as passed. A configuration-load error means the intended rules may never have executed, so the controller should halt the release gate and repair the environment.

Incorrect Answers

A:

A process may emit optimistic or stale text while failing before its intended checks finish. The controller should inspect the actual exit status, stderr and expected test artifacts, and mark the job failed when setup does not complete. Successful prose is not an executable validation receipt.

C:

Repeating the same linter command forever will not repair a configuration error. The nonzero exit status is authoritative even if the output text sounds successful. Surface the failing configuration and stop retries until the environment or command has actually changed.

D:

Deleting configuration to force a green status would remove the rule set being tested and invalidate the quality gate. Repair the configuration and rerun the intended checks instead.

Question 270

A developer wants both the set of test files and a specific assertion within them. Which built-in operation fits the requirement?

  1. Use Glob for path discovery rather than reading every file
  2. Use Read on the selected files rather than a broad shell dump
  3. Use Grep for content search instead of enumerating filenames
  4. Use Glob to narrow filenames and Grep to locate the assertion

Explanation

Correct Answer

D:

A developer wants both the set of test files and a specific assertion within them. The relevant control is to use Glob to narrow filenames and Grep to locate the assertion. Combining path and content tools avoids indiscriminate full-repository reads. Validate the actual command, file path or content representation before recording the operation as successful.

Incorrect Answers

A:

Path matching quickly narrows candidate files before content inspection. The issue here is a developer wants both the set of test files and a specific assertion within them, so the relevant control is to use Glob to narrow filenames and Grep to locate the assertion. Combining path and content tools avoids indiscriminate full-repository reads.

B:

Targeted file reads preserve context and avoid unnecessary data exposure. Here, a developer wants both the set of test files and a specific assertion within them. Use Glob to narrow filenames and Grep to locate the assertion. Combining path and content tools avoids indiscriminate full-repository reads.

C:

Grep locates matching text, but by itself does not identify the requested family of test filenames as a separate preliminary filter. First use Glob to find paths matching the test pattern; then search the narrowed set for the assertion and inspect the relevant files.

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