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Anthropic CCA-F Practice Test 48

Question 470

A large monorepo contains three functions named authorize in unrelated packages. How should an agent trace a failing authorization path?

  1. Assume imports always resolve to the nearest file
  2. Choose the authorize definition in the package whose directory name most closely resembles the failing service
  3. Identify the actual entry point and follow imports, call sites and runtime package resolution
  4. Edit all three functions in parallel to be safe

Explanation

Correct Answer

C:

Three functions with the same name may enforce unrelated policies in different packages. Start from the failing request or test, identify its runtime entry point, resolve imports and package selection under the active build configuration, and follow the call chain to the invoked authorize implementation. Confirm with a targeted trace or reproducible test before editing, then scope the patch to the actual code path and rerun authorization checks. This evidence-based resolution avoids modifying a similarly named but unused function and keeps the investigation tied to the deployed revision rather than directory-name guesses.

Incorrect Answers

A:

Imports are resolved by the project’s actual language, module loader, build configuration and dependency graph, not necessarily by physical proximity of files. The nearest authorize definition might belong to an unrelated package and never execute for the failing request. The agent should locate the true entry point and follow the import or symbol references that the deployed build uses, with tests or runtime traces when ambiguity remains. An incorrect path assumption could lead to patching an inert function while leaving the access-control defect untouched.

B:

A directory-name match is a useful search lead but cannot identify the actual function invoked at runtime. Imports, package aliases, generated bindings, or deployment configuration may route the failing call to a different definition. The agent should start from the observed entry point and trace call sites and package resolution for the active build, then inspect the exact implementation. Editing a plausible-looking neighbor risks changing dead or unrelated code while leaving the real defect unchanged.

D:

Editing all three authorization functions at once is not a conservative fix: it broadens the mutation to unrelated packages and can silently change access policy for other services. The observed failure may involve only one implementation selected by imports or runtime configuration. Determine which function is actually called, reproduce the defect on its route and change that path under appropriate review. Other definitions should remain untouched unless independent evidence shows they share the same fault. More edits create more risk without improving the causal diagnosis.

Question 471

An assistant investigating a TypeScript incident repeatedly opens generated dist files rather than the authored src modules. What improvement helps?

  1. Patch only minified JavaScript and never change source
  2. Delete the dist directory without checking deployment dependencies
  3. Map generated artifacts back to source and use the build pipeline to identify the deployed revision
  4. Treat all matching filenames as equally authoritative

Explanation

Correct Answer

C:

Trace the generated JavaScript artifact back to the authored TypeScript source using sourcemaps, build metadata or reproducible compilation, and identify which source revision produced the deployed dist files. Investigate the relevant src module and its dependencies, then apply a scoped fix and rebuild under the same pipeline. Compare the resulting artifact with deployment evidence before claiming resolution. This reduces repeated reading of minified noise while preserving the connection to the actual production behavior; the generated file and source revision may be different if deployment is stale.

Incorrect Answers

A:

Minified dist code is usually an output of the build process; editing it directly can create a fix that disappears the next time source files are compiled. The investigator should identify the authored TypeScript module and its deployed revision, then make any approved correction in source with tests. Generated artifacts may help reproduce the currently deployed behavior, but are not normally the canonical development location. Never assume a minified output patch is a durable source change.

B:

Deleting dist without checking deployment dependencies can break the running application or erase the very artifact needed to match the incident to a release. The correct problem is source-to-output mapping, not merely that a generated directory exists. Establish build configuration, sourcemaps and artifact identities before cleanup. Remove generated output only under an authorized build or deployment workflow with a proven regeneration path.

D:

Matching filenames do not establish that two artifacts have the same authority or function. A generated dist module may reflect transpilation and bundling, while an authored src file contains the maintainable implementation. The investigator should use build mappings and revision evidence to decide which file to inspect or edit. Treating all matches equally can waste time in generated code or lead to changes that are overwritten on the next build.

Question 472

A debugging agent reads a massive log file but can only fit 5 percent into context. How should it preserve the investigation?

  1. Filter by error correlation ID and bounded event window while keeping offsets for later retrieval
  2. Use the log’s first visible screenful as the representative incident sample without checking timestamps or error distribution
  3. Read an arbitrary middle chunk and call it complete
  4. Drop timestamps to save tokens

Explanation

Correct Answer

A:

A five-percent context budget makes targeted retrieval essential. Start with the incident or request correlation ID, collect the relevant error timestamps and read bounded surrounding log windows, recording file offsets or stable source references for later expansion. Preserve the stack trace, preceding causal events and any missing ranges instead of claiming the slice represents the whole log. If a gap prevents root-cause inference, request another targeted window rather than fabricate what was omitted. This approach conserves tokens while keeping the investigation reproducible and faithful to the full stored artifact.

Incorrect Answers

B:

Large logs often contain repetitive low-value lines and rare decisive errors far from the beginning. Selecting the first five percent by position can omit the actual failure window, correlated request IDs or representative exceptions. A sound approach filters by known time ranges and signatures, retains source offsets and summarizes sampled evidence with explicit coverage limits. Never promote an arbitrary prefix to a verified root cause.

C:

An arbitrary middle segment may contain normal traffic and miss the error window entirely. Without correlation IDs or timestamps, the agent cannot know whether it saw the beginning of the failure, an aftermath or unrelated events. A very large log should be searched by incident identifiers and failure markers, then sampled with bounded context around those matches. Report which offsets were retrieved and what was not examined. Calling an arbitrary slice complete would turn a context limit into an unsupported coverage claim.

D:

Timestamps carry ordering and causality information that the agent needs to associate a failure with preceding requests, retries or service restarts. Dropping them may save a few tokens but prevents distinguishing an initial error from later effects and makes cross-service correlation harder. Keep time and correlation identifiers in a compact event record while discarding redundant routine lines. The memory budget should be managed by evidence-targeted filtering, not by stripping fields that make the surviving logs diagnostically meaningful.

Question 473

A refactoring assistant sees 120 call sites for a renamed API across multiple packages. What workflow supports a safe change?

  1. Edit only the first match and declare migration complete
  2. Use a text replacement without checking distinct API meanings
  3. Build a bounded inventory of call sites, update scoped code and run affected test suites
  4. Rewrite the whole repository in one unreviewed operation

Explanation

Correct Answer

C:

Build a versioned inventory of the 120 affected call sites, group them by package and actual API semantics, and identify which files are owned by the migration. Apply bounded edits to the intended source locations, update compatible call signatures and run the relevant package, integration and regression suites. Compare the final search against the original inventory to ensure legitimate uses were covered and excluded lookalikes stayed unchanged. This balances efficient bulk work with evidence-based scoping rather than a single blind repository-wide replacement.

Incorrect Answers

A:

Updating only the first of 120 call sites would leave the migration incomplete and could produce inconsistent API usage across packages. One passing unit test in the edited package would not guarantee that other callers still compile or behave correctly. Inventory all relevant references with path and type information, then plan bounded changes and verify affected test suites. Avoid declaring success before the source search shows the expected remaining call pattern.

B:

A global text replacement can change comments, string literals or different APIs that happen to share a symbol name. Some call sites may use overloads or versions with different parameter contracts, so syntax-only substitution can introduce subtle regressions. Read representative call contexts, group genuine uses and apply scoped edits with tests. Matching words is not enough to establish identical semantics across 120 occurrences.

D:

A one-shot rewrite of the entire repository creates a huge, difficult-to-review diff and may change unrelated functionality. It also makes it harder to identify which modification caused a test failure. Partition work by package or API contract, verify each cohort against the current revision, and integrate changes with targeted tests. A large migration can still be executed efficiently without abandoning ownership boundaries and post-change validation.

Question 474

A long codebase investigation finds contradictory comments about an authentication default. What should be treated as authoritative?

  1. Current executable configuration and tests for the deployed version, with comments treated as hypotheses
  2. The oldest comment because it documents original intent
  3. The number of comments supporting a setting
  4. Whichever comment uses stronger adjectives

Explanation

Correct Answer

A:

Executable configuration, current deployed-version behavior and relevant tests provide stronger evidence of an authentication default than conflicting source comments. Inspect the exact release and environment first, then treat comments as hypotheses about intended or historical behavior. If the runtime and documentation differ, record the discrepancy and avoid claiming a universal default. The controlling answer should be tied to the actual deployed configuration, not to which developer wrote a more confident annotation years ago. Tests should target the same build identity being evaluated.

Incorrect Answers

B:

The oldest comment may describe the original implementation before migrations or a security hardening change. Age alone does not make it applicable to the deployed version; in fact it can indicate staleness. Compare the current executable configuration and tests with the comment, and update misleading documentation through an authorized process. Historical intent is useful for provenance but does not override current observed behavior.

C:

Counting comments measures the number of assertions, not whether the configuration truly enables an authentication check. Several files can copy the same obsolete statement, creating correlated misinformation. Consult the runtime configuration and authoritative tests for the target release. If those are unavailable, report uncertainty rather than settling a technical fact by vote among comments.

D:

Strong adjectives in source comments are not execution evidence. A comment calling a default 'definitely secure' might be stale, wrong or scoped to a different environment. Check actual configuration loading, relevant flags and provider behavior for the deployed version. The assistant should not promote confidence wording into a verified product fact when two comments disagree.

Question 475

An agent has explored multiple packages and is near its context budget. Which checkpoint helps it resume a specific bug investigation?

  1. Drop failed hypotheses because they are no longer interesting
  2. Store every line it has ever read without hierarchy
  3. Save entry point, narrowed call graph, exact paths, revision, tested hypotheses and the next source location
  4. Record only that the bug concerns authentication

Explanation

Correct Answer

C:

Save the bug's current entry point, narrowed call graph, relevant file paths with revision or hashes, reproduced failure, hypotheses tested and which were ruled out. Include the next precise source location or command to inspect and any read/write authorization boundary. That gives a resumed assistant a deterministic starting point without rereading hundreds of unrelated files. Preserve references to full logs and source artifacts for verification. A compact checkpoint should distinguish observed test failures from conjectures, and it should not imply the bug is fixed merely because the investigation was summarized.

Incorrect Answers

A:

Dropping all failed hypotheses loses valuable information about which paths were tested and why they did not explain the bug. The resumed agent may repeat the same dead-end searches or treat an earlier rejected idea as new. Preserve a compact list of materially ruled-out causes with the evidence and target revision, while discarding irrelevant exploratory prose. Negative findings help define the remaining investigation scope.

B:

Storing every line of every opened file without hierarchy recreates the context-budget problem rather than solving it. A useful checkpoint should retain the exact entry point, key call graph edges, source locations and tested decisions, with stable references to raw content. Large logs can remain retrievable by artifact ID. Prioritization does not require deleting evidence; it means selecting decision-relevant facts for the summary.

D:

Recording only that the issue concerns authentication gives the resumed agent almost no navigation or diagnostic state. It may restart the repository search, guess at the affected component or repeat tests already performed. Include targeted paths, relevant revisions and actual failure evidence to make the next step clear. A broad topic label is useful as a heading, not a continuation checkpoint for a complex code investigation.

Question 476

A model sees an old path from a prior bug report, but the repository has since moved the module. What should it do before editing?

  1. Use the stale reported path as the edit target if its old directory name still appears anywhere in the repository history
  2. Assume the new module behaves exactly like the old one
  3. Locate the current file and verify symbol identity in the checked-out revision
  4. Use the old file path as a shell redirect target without inspection

Explanation

Correct Answer

C:

The bug report's historical path is evidence about the older repository, not a guaranteed edit target today. Search the current tree for the referenced symbol or call sites, resolve active imports and verify the implementation’s identity and revision before changing it. If the function was split or removed, explain which current path now implements the behavior and what tests reproduce the original defect. Only then apply a scoped patch and validate the active build. This prevents a stale filename from directing writes to an abandoned or unrelated module.

Incorrect Answers

A:

Historical paths can be valid evidence of where code used to live, but they are not proof of the current target. Editing an obsolete location may have no effect on the actual bug or recreate deprecated code. Search the live repository for the moved module and its current references, inspect the implementation and track the version before applying a change. Git history informs provenance; active source controls execution.

B:

A module moved to another path may also have been refactored, renamed, split or replaced with a different interface. The fact that a prior bug report describes a former file does not prove its old behavior still exists at the new location. Search current symbols and imports, inspect the checked-out revision and identify the active implementation before proposing a change. Assuming equivalence could cause an agent to patch the wrong behavior or ignore new security controls added since the original report.

D:

Shell redirection to a historical path can create a new file in a directory that no longer contains the active module. The edit might appear successful while the running application continues using a different implementation, or it could overwrite unrelated content in a reused path. Verify the checked-out tree and actual source symbol first, then use an authorized edit operation on the current target. The absence of current path evidence is a reason to investigate, not permission to write to a guessed historical location.

Question 477

A security agent is tasked with auditing a package but its search returns thousands of matches from vendored dependencies. Which pruning rule helps?

  1. Report each vendored copy as an independent custom vulnerability
  2. Separate first-party source paths from generated and vendored code before prioritizing findings
  3. Exclude the vendored tree from analysis without recording dependency versions or exposure
  4. Keep only first-party code in the final report because vendor findings belong to a different team

Explanation

Correct Answer

B:

Third-party duplicates can bury the relevant implementation and cause repeated reports of one dependency. Use inventories that preserve package provenance, version and whether a match is directly reachable. Vendored dependencies and generated output can overwhelm first-party audit findings. Separate path classes, prioritize the owned package and track which external code is in scope to avoid misleading blanket conclusions. Do not change third-party source without an explicit supported patch or upgrade plan. Dependencies still matter for supply-chain exposure, but warrant separate analysis.

Incorrect Answers

A:

Vendored packages can contain real vulnerabilities, but thousands of copied library matches do not each represent a new first-party custom-code defect. Reporting every duplicate copy as an independent finding inflates counts and hides which upstream package version and deployed paths actually matter. Separate owned source from dependencies, identify package and version provenance, and assess reachable affected copies under the relevant threat model. Distinct findings should reflect separate vulnerable assets or conditions, not repetitions of the same scanner phrase.

C:

Removing vendored matches from the immediate first-party code review can reduce noise, but treating the dependencies as entirely out of scope loses information about vulnerable transitive packages and supply-chain exposure. The correct approach separates first-party findings from generated/vendor paths, then evaluates dependency risk using appropriate package inventories or advisories. Exclusion should be visible as a filter, not an assertion that vendored components cannot matter.

D:

Ownership boundaries can help route remediation, but they do not erase the security implications of dependencies executed within the product. Vendor issues should be separated or deduplicated and assigned to the appropriate owner while remaining visible to risk management. The immediate code search can prioritize original source to avoid repeated copies, yet a documented dependency-risk path should remain. Hiding all dependency findings would understate the system’s exposure.

Question 478

A code assistant finds a failing unit test but its output exceeds the model window and omits the stack trace location. What targeted retrieval should follow?

  1. Read the failing test identifier, assertion, stack trace and relevant source segment from the stored log
  2. Increase log verbosity indefinitely and paste everything
  3. Assume the test passed because the final summary is truncated
  4. Write a speculative fix before viewing the failing assertion

Explanation

Correct Answer

A:

Retrieve the specific failed test identifier, its assertion failure, stack-trace location and the relevant source segment from the saved log. This targeted read restores the missing diagnostic evidence without reintroducing an oversized tool response. Preserve the run revision and environment so the exception can be connected to the correct code path. Only after inspecting the actual failure should the assistant propose a narrow fix or test a hypothesis. Truncated output is incomplete evidence, not a green result, and a guessed repair would lack a causal basis.

Incorrect Answers

B:

Increasing log verbosity indefinitely can make the response even larger and more likely to truncate before the decisive trace appears. The useful action is to retrieve a bounded relevant range from persistent output, not paste every compiler message again. Identify the failed test and fetch its assertion and stack section, with source references. Context size is a resource constraint, not a reason to abandon evidence-based diagnosis.

C:

A truncated final summary does not change the underlying failed unit test into a pass. The test runner's observed exit status and error record remain authoritative. If the stack trace was omitted from model context, mark that diagnostic detail missing and fetch it before concluding root cause. Reporting success from absence of visible error text would misrepresent an actual failed run.

D:

Writing a speculative fix before inspecting the failed assertion risks modifying unrelated code or masking the true defect. The trace may point to a different function or environment issue than the assistant first assumes. Reopen the relevant log range and source segment, then form and test a bounded hypothesis against the exact revision. The proposed edit should be justified by observed behavior, not by the desire to finish quickly after truncation.

Question 479

A reviewer must understand why a CLI command differs between Windows and Linux across a large repository. What source material should it inspect?

  1. Compare only the application entry-point source files and assume build and packaging scripts cannot affect platform behavior
  2. Assume POSIX syntax works on every platform
  3. Rewrite all commands using one fixed path separator without testing
  4. Platform-specific scripts, execution environment conditions and cross-platform test evidence

Explanation

Correct Answer

D:

To explain differing CLI behavior, follow the command from its repository entry point into platform-specific scripts, package tasks and environment branches. Check the intended shell, path conventions, executable resolution, build flags and operating-system conditions, then compare actual test or CI results for Windows and Linux. A simple source-file scan may omit the script that transforms or invokes the command. This evidence-based approach identifies whether the difference is expected platform adaptation or a reproducible bug on one target, without assuming identical syntax across all hosts.

Incorrect Answers

A:

CLI behavior commonly depends on wrappers, shell scripts, package entry points, executable extensions and environment configuration. Platform-specific failures can occur even when the core source function is identical. A cross-platform audit should inspect the actual invoked command path, packaging metadata and relevant startup scripts on Windows and Linux. Excluding those files can miss exactly the portability distinction the reviewer is investigating.

B:

POSIX shell syntax is not universally valid in Windows command interpreters, and even familiar commands can refer to different executables or path conventions. Assuming cross-platform portability without checking the repository's scripts could make a suggested build command fail or behave differently on another operating system. Inspect the actual Windows and Linux task definitions, environment variables and execution toolchains, then compare test evidence for each target. Platform distinctions belong to the source contracts, not to a model's preference for one shell dialect.

C:

Replacing every path separator with a single symbol addresses only one superficial compatibility issue. Platform behavior can also depend on quoting rules, environment variable syntax, executable extensions, line endings and shell availability. An untested global rewrite might break valid scripts while missing those deeper differences. Examine the project’s OS-specific build and packaging commands, identify the actual target shell, and verify equivalent behavior with relevant cross-platform tests before recommending a change.

Question 480

A large repository contains multiple definitions of a function behind build tags. Which conclusion is appropriate before a patch?

  1. Select the first textual function definition returned by search as the universal implementation across platforms
  2. Assume all definitions execute sequentially
  3. Identify the active build target and conditional compilation flags for the deployed artifact
  4. Edit the function definition with the most repository references, assuming popularity identifies the compiled implementation

Explanation

Correct Answer

C:

A correct patch depends on the build artifact actually used by the target environment. The agent should identify the selected platform, compiler or build flags and the definitions included under those conditions before editing a symbol that appears in several files. Inspect the relevant active implementation and run tests for that target, then consider whether parallel variants also need coordinated changes. A plain search result does not determine reachability under conditional compilation, and modifying the most popular or first file may leave production behavior unchanged.

Incorrect Answers

A:

Build tags, conditional compilation and alternate source files can make several definitions valid for different targets. Search order does not establish which implementation is compiled for the affected platform or build configuration. Inspect build constraints and platform selection before assigning responsibility or recommending an edit. A fix for one target must be evaluated without incorrectly modifying or discarding other platform-specific implementations.

B:

Conditional compilation generally selects one applicable implementation for a given build target; multiple definitions are not simply executed one after another in source-search order. Assuming sequential execution would misrepresent which code path ships on Windows, Linux or another configured target. The reviewer should inspect build tags, conditional flags and the actual compilation settings to identify the active definition. Source presence alone cannot establish that every variant participates in the deployed binary.

D:

Reference counts can be skewed by tests, examples, inactive build tags or generated code. The function most often mentioned in a search index may not be included in the artifact that users actually run. Conditional compilation is controlled by the selected platform, target and build flags, so the agent must identify those conditions and inspect the active definition before patching. Popularity can guide exploration but is not proof of executable deployment relevance.


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