CCAR-F Practice Exam

Instructions

60 items · 120 minutes. Average 2 minutes per item; flag and return to hard ones.
Scaled score 100–1000, pass 720. As a study proxy, aim for ≥ 80% raw (≥ 48/60) consistently before booking.
Items are multiple-choice (select one) and multiple-response (select two — the item states the count).
No guessing penalty — answer every item.
Each item is tagged [Dn · Sm] for its domain and source scenario. These are new items; the domain pages and scenarios page have others.

Domain distribution (matches the blueprint)

Domain	Weight	Items
D1 · Agentic Architecture and Orchestration	27%	16
D2 · Claude Code Configuration and Workflows	20%	12
D3 · Prompt Engineering and Structured Output	20%	12
D4 · Tool Design and MCP Integration	18%	11
D5 · Context Management and Reliability	15%	9

Score interpretation

Raw score (of 60)	Approx. band	Reading
54–60 (90–100%)	Well above pass	Exam-ready across all domains
48–53 (80–88%)	Above pass	Ready; shore up any single weak domain
43–47 (72–78%)	Around the line	Borderline; drill weakest domain before booking
36–42 (60–70%)	Below pass	Not ready; revisit D1 and the anti-patterns
< 36 (< 60%)	Well below	Restudy the domain pages before re-attempting

The real exam is scaled 100–1000 with a pass at 720; percent-correct is reported per domain. Treat ≥ 80% raw here as your go/no-go signal.

Take the practice exam

Two ways to use the questions below: the interactive mode runs a timed sitting one question at a time and ends with your score, a per-domain breakdown and a full correction; the review mode underneath lists every question with its options one per line and the answer hidden until you ask for it.

Interactive mode

Take the practice exam

60 questions · one at a time · 120-minute countdown · results with per-domain breakdown and full correction at the end. Your progress is saved in this browser if you leave the page.

Time limit Shuffle question order

CCAR-FPractice exam

Question 1 of 60

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All questions (review mode)

Options are listed one per line. The answer and explanation stay hidden until you click Show answer. Use the interactive mode above for a timed sitting.

Q1D1 · Agentic Architecture and OrchestrationScenario 1Select one
Every support request follows the identical three steps: classify, look up, reply. An architect proposes an autonomous agent. What is the better choice?
- A. An autonomous agent for flexibility.
- B. A workflow (prompt chaining with gates), because the steps are fixed and known.
- C. A multi-agent coordinator system.
- D. Eight-way voting.
Show answer
Answer: B.
Fixed, known steps → workflow, not an agent. The other options over-engineer a deterministic sequence.
Q2D1 · Agentic Architecture and OrchestrationScenario 3Select one
A research coordinator must decide sub-questions based on what earlier searches reveal. Which pattern?
- A. Prompt chaining.
- B. Orchestrator-workers, because subtasks are decided at runtime.
- C. Routing.
- D. Sectioning.
Show answer
Answer: B.
Runtime-decided subtasks define orchestrator-workers. Chaining/routing/sectioning all presuppose predefined steps.
Q3D1 · Agentic Architecture and OrchestrationScenario 1Select one
An agent loop never terminates. It stops only when the response text says 'complete'. What is the correct redesign?
- A. Add more completion phrases.
- B. Key the loop off stop_reason: continue on tool_use, stop on end_turn, handle max_tokens/refusal explicitly.
- C. Lower the temperature.
- D. Cap at 3 iterations and stop.
Show answer
Answer: B.
Anti-pattern 1 — prose is not a control signal. More phrases (A) still parse prose, temperature (C) does not fix it, and a sole cap (D) is anti-pattern 2.
Q4D1 · Agentic Architecture and OrchestrationScenario 1Select two
Which TWO are valid escalation triggers for a support agent?
- A. The customer explicitly asks for a human.
- B. The customer's tone is angry.
- C. The task needs an authority the agent lacks, after attempting the resolvable parts.
- D. The model reports 55% confidence.
- E. The reply exceeds 300 words.
Show answer
Answer: A and C.
Explicit request (now) and capability gap (after attempting). Sentiment (B) is #5, confidence (D) is #4, length (E) is irrelevant.
Q5D1 · Agentic Architecture and OrchestrationScenario 3Select one
A subagent ignores the coordinator's earlier findings. Root cause?
- A. Its context is too small.
- B. Subagent contexts are isolated and do not auto-inherit; context must be passed explicitly.
- C. Wrong model.
- D. Thinking disabled.
Show answer
Answer: B.
Isolation is by design; pass context explicitly. Size/model/thinking do not supply missing context.
Q6D1 · Agentic Architecture and OrchestrationScenario 3Select one
A subagent errors midway. The system returns the other subagents' results as the complete answer. Which anti-pattern?
- A. #6 generic errors.
- B. #7 silent error suppression.
- C. #2 iteration cap.
- D. #10 aggregate metrics.
Show answer
Answer: B.
Presenting partial as complete without noting the gap is silent suppression (#7).
Q7D1 · Agentic Architecture and OrchestrationScenario 1Select one
A refund rule must always require human approval above $500. Correct enforcement?
- A. A system-prompt instruction.
- B. A PreToolUse hook that inspects the amount and exits 2 to block, routing to a human.
- C. Ask the model to self-check.
- D. A CLAUDE.md note.
Show answer
Answer: B.
Critical rules → deterministic hooks (#3). Prompt/CLAUDE.md/self-check are probabilistic.
Q8D1 · Agentic Architecture and OrchestrationScenario 1Select one
A billing tool is retried on 429 and double-charges. What is the fix?
- A. Longer backoff.
- B. An idempotency key so retries do not duplicate the write.
- C. Never retry.
- D. Bigger model.
Show answer
Answer: B.
Idempotency keys make write retries safe. Backoff (A) does not prevent duplication.
Q9D1 · Agentic Architecture and OrchestrationScenario 3Select one
A team must ship an agent fast with standard tools and minimal infra. Which hosting?
- A. Managed Agents (Anthropic hosts loop and sandbox).
- B. Agent SDK, self-hosted.
- C. A bespoke orchestration engine.
- D. Tool Runner with a custom sandbox.
Show answer
Answer: A.
Managed Agents minimise infrastructure and are fastest for standard tools.
Q10D1 · Agentic Architecture and OrchestrationScenario 1Select one
stop_reason returns max_tokens. How should the loop treat it?
- A. As successful completion.
- B. As truncated output — raise the limit or chunk, then retry; do not treat as done.
- C. As a refusal.
- D. As a tool call.
Show answer
Answer: B.
max_tokens means truncation, not completion.
Q11D1 · Agentic Architecture and OrchestrationScenario 3Select one
Operators cannot tell which subagent caused a failure. Best fix?
- A. More retries.
- B. Per-agent trace spans plus a correlation ID threaded through coordinator and subagents.
- C. Upgrade all subagents to Opus 5.
- D. Raise the iteration cap.
Show answer
Answer: B.
Traces + correlation ID give per-task observability.
Q12D1 · Agentic Architecture and OrchestrationScenario 3Select one
An 8-subagent system is proposed where a 2-step workflow meets the accuracy bar, and cost/latency are constrained. Best call?
- A. Build the 8-subagent system.
- B. Use the 2-step workflow; add complexity only if it demonstrably improves outcomes.
- C. A single agent with 18 tools.
- D. 8-way voting.
Show answer
Answer: B.
Simplest solution that meets the bar. The others over-engineer (and C is #8).
Q13D1 · Agentic Architecture and OrchestrationScenario 1Select one
A tool returns 'Error' with no detail; the agent cannot decide whether to retry. Which anti-pattern and fix?
- A. #7; return empty.
- B. #6 generic errors; return a structured error with category and retryable flag.
- C. #3; use a hook.
- D. #8; reduce tools.
Show answer
Answer: B.
Generic errors hide diagnostics (#6); structured errors enable recovery.
Q14D1 · Agentic Architecture and OrchestrationScenario 3Select one
Three independent summaries must complete as fast as possible. Which pattern?
- A. Prompt chaining (serial).
- B. Parallelization by sectioning — independent work, latency bounded by the slowest branch.
- C. Evaluator-optimizer.
- D. Autonomous agent.
Show answer
Answer: B.
Independent subtasks + latency goal = sectioning.
Q15D1 · Agentic Architecture and OrchestrationScenario 1Select two
Which TWO make loop termination correct?
- A. end_turn is the primary completion signal.
- B. max_tokens means the task completed.
- C. An iteration/cost cap is a valid backstop.
- D. Parsing text for 'finished' is recommended.
- E. A cap should be the sole stop.
Show answer
Answer: A and C.
end_turn signals done; a cap backstops. B/D/E are anti-patterns.
Q16D1 · Agentic Architecture and OrchestrationScenario 3Select one
A customer fact must survive across sessions and compaction. Where should it live?
- A. Conversation history.
- B. The memory tool or an external database.
- C. A thinking block.
- D. max_tokens.
Show answer
Answer: B.
Durable, cross-session state needs the memory tool or a database.
Q17D2 · Claude Code Configuration and WorkflowsScenario 2Select one
Team build/test commands and conventions must be shared with everyone in the repo. Where?
- A. Each user's ~/.claude/CLAUDE.md.
- B. Project ./CLAUDE.md, checked into git.
- C. CLAUDE.local.md.
- D. Typed manually each session.
Show answer
Answer: B.
Shared repo context → checked-in project CLAUDE.md.
Q18D2 · Claude Code Configuration and WorkflowsScenario 2Select one
A mandatory, non-overridable org rule must apply everywhere. Where?
- A. Project CLAUDE.md.
- B. Managed-policy settings, which cannot be overridden.
- C. settings.local.json.
- D. A slash command.
Show answer
Answer: B.
Mandatory non-overridable rules → managed policy.
Q19D2 · Claude Code Configuration and WorkflowsScenario 2Select one
Which resolves with the highest authority in settings?
- A. ~/.claude/settings.json (user).
- B. Managed-policy settings.
- C. .claude/settings.json (project).
- D. .claude/settings.local.json.
Show answer
Answer: B.
Managed policy overrides local, project and user.
Q20D2 · Claude Code Configuration and WorkflowsScenario 2Select one
In permissions, what happens when a command matches both allow and deny?
- A. Allow wins.
- B. Deny wins.
- C. The user is always asked.
- D. Undefined.
Show answer
Answer: B.
deny takes precedence over allow, so a command matching both is blocked.
Q21D2 · Claude Code Configuration and WorkflowsScenario 5Select one
A CI job must review PRs, emit JSON, and fail the build on issues. Correct invocation?
- A. Interactive claude, copy results.
- B. claude -p "…" --output-format json --allowedTools "Read,Grep,Bash(git diff:*)", parse JSON, gate on exit code.
- C. --permission-mode bypassPermissions with all tools.
- D. claude -p and grep prose.
Show answer
Answer: B.
Headless JSON, minimal allowlist, exit-code gating.
Q22D2 · Claude Code Configuration and WorkflowsScenario 2Select one
A capability is needed only occasionally and bundles a helper script. Which mechanism?
- A. Project CLAUDE.md.
- B. A Skill (SKILL.md) loaded progressively by its description.
- C. Managed policy.
- D. A deny rule.
Show answer
Answer: B.
Occasional, script-bundling capability → Skill with progressive disclosure.
Q23D2 · Claude Code Configuration and WorkflowsScenario 2Select one
A diff-review subagent must never edit or push. How is this enforced?
- A. A prompt telling it not to.
- B. A subagent tool allowlist excluding Edit and push (e.g. Read, Grep, Bash(git diff:*)).
- C. Give it all tools.
- D. Manual plan mode.
Show answer
Answer: B.
Least privilege via the subagent's tool allowlist.
Q24D2 · Claude Code Configuration and WorkflowsScenario 2Select one
Enforce 'tests pass before commit' unbypassably. Which mechanism?
- A. CLAUDE.md instruction.
- B. A PreToolUse hook that runs tests on commit and exits 2 on failure.
- C. A slash command.
- D. Ask developers to remember.
Show answer
Answer: B.
Exit code 2 from a PreToolUse hook blocks deterministically.
Q25D2 · Claude Code Configuration and WorkflowsScenario 2Select one
A large, unfamiliar multi-file refactor. Best first step in Claude Code?
- A. Direct execution.
- B. Plan mode: read-only exploration then a reviewable plan.
- C. Delete failing tests.
- D. Increase max_tokens.
Show answer
Answer: B.
Large/unfamiliar/multi-file → plan mode.
Q26D2 · Claude Code Configuration and WorkflowsScenario 4Select one
A team wants an MCP server available to everyone who clones the repo. Where configured?
- A. Each user's user-scope config.
- B. A checked-in project .mcp.json.
- C. settings.local.json.
- D. CLAUDE.md prose.
Show answer
Answer: B.
Project-scope .mcp.json shares it with the team.
Q27D2 · Claude Code Configuration and WorkflowsScenario 5Select two
Which TWO implement least privilege for a headless CI review that only reads code?
- A. --allowedTools "Read,Grep,Bash(git diff:*)".
- B. --permission-mode bypassPermissions.
- C. Deny rules for Bash(rm -rf:*) and writes to protected paths.
- D. Allow all Bash commands.
- E. Grant Edit and WebFetch just in case.
Show answer
Answer: A and C.
Narrow allowlist + explicit denies. B/D/E widen the blast radius.
Q28D2 · Claude Code Configuration and WorkflowsScenario 5Select one
A 4,000-line PR does not fit one review pass. Best approach?
- A. Truncate to 500 lines.
- B. Multi-pass: partition by module, review each pass/subagent, aggregate and rank.
- C. One giant prompt.
- D. Skip review.
Show answer
Answer: B.
Partition-review-aggregate preserves quality.
Q29D2 · Claude Code Configuration and WorkflowsScenario 2Select one
Which belongs in git-ignored CLAUDE.local.md?
- A. Team build commands.
- B. A developer's personal scratch notes and local paths.
- C. Architecture conventions.
- D. A mandatory security rule.
Show answer
Answer: B.
Personal, non-shared notes go in the git-ignored local file.
Q30D2 · Claude Code Configuration and WorkflowsScenario 2Select one
A repeatable review prompt invoked by name with a PR number. Which mechanism?
- A. A subagent.
- B. A slash command in .claude/commands/review.md using $ARGUMENTS.
- C. Managed policy.
- D. A PostToolUse hook.
Show answer
Answer: B.
Invoked-by-name prompt template → slash command with $ARGUMENTS.
Q31D3 · Prompt Engineering and Structured OutputScenario 6Select one
On Fable 5.1, an extraction sets forced tool_choice and gets 400s. Correct fix?
- A. Backoff.
- B. tool_choice: 'auto' + instruction, or strict: true tools, or structured outputs.
- C. tool_choice: 'any'.
- D. Lower max_tokens.
Show answer
Answer: B.
Fable 5.1 forbids forced tool choice; use auto+instruction, strict, or structured outputs.
Q32D3 · Prompt Engineering and Structured OutputScenario 6Select one
Overall extraction accuracy is 94% but contracts fail often. Correct evaluation change?
- A. Increase sample size.
- B. Report per-document-type accuracy and gate on the worst type.
- C. Raise temperature for contracts.
- D. Average more runs.
Show answer
Answer: B.
Aggregate metrics mask a failing type (#10).
Q33D3 · Prompt Engineering and Structured OutputScenario 5Select one
A prompt puts the variable input first and the stable system prompt last; no cache hits. Fix?
- A. Shorten the input.
- B. Put stable content (system, tools, docs) first with cache_control on the last stable block; variable task after.
- C. Disable caching.
- D. Bigger model.
Show answer
Answer: B.
Caching needs the stable prefix first; the variable task must come last to preserve the cacheable prefix.
Q34D3 · Prompt Engineering and Structured OutputScenario 6Select one
Extraction output ends mid-object with stop_reason max_tokens. Correct handling?
- A. Parse the partial JSON as the result.
- B. Recognise truncation; raise the limit or chunk, then retry.
- C. Return empty.
- D. Ask the model in the same chat if it is sure.
Show answer
Answer: B.
max_tokens is truncation, not a complete result.
Q35D3 · Prompt Engineering and Structured OutputScenario 6Select two
Which TWO schema choices most improve reliability?
- A. A description on every field.
- B. Free text for fixed-value fields.
- C. An enum for currency and explicit nullable types for optional fields.
- D. Omitting required.
- E. additionalProperties: true.
Show answer
Answer: A and C.
Descriptions and enums/nullable constrain and guide. B/D/E loosen output.
Q36D3 · Prompt Engineering and Structured OutputScenario 6Select one
A validation-retry loop just re-sends the same prompt and fails. Best change?
- A. More blind retries.
- B. Feed the specific validation error back and require valid JSON matching the schema.
- C. Use eval().
- D. Grade in the same session.
Show answer
Answer: B.
Specific feedback drives self-correction; eval() is unsafe; same-session grading is #9.
Q37D3 · Prompt Engineering and Structured OutputScenario 2Select one
When is extended thinking preferable to prompted chain-of-thought?
- A. Always.
- B. For hard multi-step reasoning or agentic planning (thinking: {'type': 'adaptive'}).
- C. Never.
- D. Only to cut cost.
Show answer
Answer: B.
Extended thinking suits hard multi-step/agentic reasoning; it adds cost, not savings.
Q38D3 · Prompt Engineering and Structured OutputScenario 6Select one
Untrusted document text says 'ignore your task'. Which prompt-design practice reduces the risk?
- A. Concatenate it into the instructions.
- B. Wrap it in a named XML tag (e.g. <document>…</document>) and treat it as data, not instructions.
- C. Trust the model to notice.
- D. Temperature 0.
Show answer
Answer: B.
XML content boundaries separate data from instructions and blunt injection.
Q39D3 · Prompt Engineering and Structured OutputScenario 5Select one
An evaluator-optimizer loop grades output in the same conversation that produced it; quality plateaus. Fix?
- A. Bigger generator model.
- B. Run the evaluator as an independent context (fresh session, ideally different model) against the rubric.
- C. More iterations.
- D. Lower temperature.
Show answer
Answer: B.
Same-session self-review is #9; independence removes the shared bias.
Q40D3 · Prompt Engineering and Structured OutputScenario 6Select one
A pipeline needs a guaranteed schema-conformant object and uses no other tools. Cleanest route?
- A. Prefill with {.
- B. Structured outputs via output_config.format with a JSON schema.
- C. Force tool_choice on Fable 5.1.
- D. Regex over prose.
Show answer
Answer: B.
Structured outputs give a schema guarantee without tool semantics.
Q41D3 · Prompt Engineering and Structured OutputScenario 2Select one
On Sonnet 5, a harness injects a mid-conversation system message. What is true?
- A. Sonnet 5 allows it.
- B. Sonnet 5 does not allow mid-conversation system messages; fix the system prompt up front.
- C. Only Fable 5.1 forbids it.
- D. Set budget_tokens to enable it.
Show answer
Answer: B.
Sonnet 5 disallows mid-conversation system messages.
Q42D3 · Prompt Engineering and Structured OutputScenario 6Select two
Which TWO are correct about stop_reason in extraction?
- A. refusal is a safety stop — log and reframe legitimately or escalate; do not retry to bypass.
- B. max_tokens output is complete and safe to parse.
- C. max_tokens indicates truncation — raise limit or chunk.
- D. end_turn means the model wants a tool.
- E. refusal is a validation error to retry unchanged.
Show answer
Answer: A and C.
Refusal is a safety stop; max_tokens is truncation.
Q43D4 · Tool Design and MCP IntegrationScenario 1Select one
An order agent has 18 tools and calls the wrong ones. Best fix?
- A. Longer prompt listing all 18.
- B. Reduce to 4–5 focused tools, split to subagents, or use tool search + defer_loading.
- C. Bigger model.
- D. Force tool_choice: any.
Show answer
Answer: B.
Anti-pattern 8 — reduce to 4–5 focused tools, split to subagents, or use tool search with defer_loading.
Q44D4 · Tool Design and MCP IntegrationScenario 4Select one
What most determines correct tool selection by the model?
- A. The number of tools.
- B. The tool's name and description (its contract, including when not to use it).
- C. Temperature.
- D. Array order.
Show answer
Answer: B.
Name and description are the primary lever.
Q45D4 · Tool Design and MCP IntegrationScenario 6Select one
An inventory tool returns an empty array both for no-stock and for backend errors. Why dangerous, and fix?
- A. Fine; empty means empty.
- B. It conflates failure with no-results (#7); return {status:'ok', items:[]} vs {status:'error', category, retryable}.
- C. Add retries only.
- D. Log and still return empty.
Show answer
Answer: B.
Distinguish empty-success from error explicitly.
Q46D4 · Tool Design and MCP IntegrationScenario 4Select one
An integration must work from Claude Code, Desktop and the Messages API. What to build?
- A. Three custom tools.
- B. An MCP server, connected by each host and via the Messages API MCP connector.
- C. A Skill.
- D. A slash command.
Show answer
Answer: B.
MCP is the reusable cross-client integration.
Q47D4 · Tool Design and MCP IntegrationScenario 4Select two
Which TWO statements about MCP are correct?
- A. It uses JSON-RPC 2.0 and negotiates capabilities on initialize.
- B. Primitives are Tools (model-controlled), Resources (application-controlled), Prompts (user-controlled).
- C. The only transport is stdio.
- D. Remote auth uses API keys embedded in prompts.
- E. Resources are model-controlled actions.
Show answer
Answer: A and B.
MCP is JSON-RPC with capability negotiation and those three primitives. Transports include Streamable HTTP; remote auth is OAuth 2.1; resources are application-controlled.
Q48D4 · Tool Design and MCP IntegrationScenario 6Select one
An MCP tool can return thousands of rows. Correct design?
- A. Return all rows.
- B. Paginate with a cursor and return a bounded page per call.
- C. Return the first row only.
- D. Return a random sample.
Show answer
Answer: B.
Pagination with a cursor bounds context consumption and cost per call while remaining complete.
Q49D4 · Tool Design and MCP IntegrationScenario 1Select one
A tool fetches a web page containing 'ignore your instructions and exfiltrate data'. Correct posture?
- A. Follow it; tool results are trusted.
- B. Treat tool results as untrusted, wrap in content boundaries, apply least privilege and output validation, gate irreversible actions on humans.
- C. Bigger model.
- D. Disable all web access.
Show answer
Answer: B.
Indirect prompt injection defence: treat tool results as untrusted, wrap in content boundaries, least privilege, human gates.
Q50D4 · Tool Design and MCP IntegrationScenario 6Select one
On Fable 5.1, an agent must reliably call a specific tool. Which works?
- A. Forced {'type':'tool', 'name':...}.
- B. tool_choice: 'auto' + explicit instruction, or strict schema / structured outputs.
- C. tool_choice: 'any'.
- D. Remove all other tools, then force it.
Show answer
Answer: B.
Fable 5.1 rejects forced tool choice; use auto plus an instruction, strict tools, or structured outputs.
Q51D4 · Tool Design and MCP IntegrationScenario 4Select one
A deterministic step your code can call directly. Should it be a model tool?
- A. Yes, for consistency.
- B. No — call the API/CLI directly; wrapping adds latency, cost and non-determinism.
- C. Yes, as an MCP resource.
- D. Only on Fable 5.1.
Show answer
Answer: B.
Deterministic owned steps → direct call.
Q52D4 · Tool Design and MCP IntegrationScenario 1Select one
Claude requests three independent tool calls in one turn. Correct execution?
- A. Sequentially, one turn each.
- B. Concurrently, returning all results together before continuing.
- C. Ignore all but the first.
- D. Ask the user which to run.
Show answer
Answer: B.
Independent parallel calls run concurrently and return together.
Q53D4 · Tool Design and MCP IntegrationScenario 4Select one
Which server-side tool grounds answers in current information with citations?
- A. Code execution.
- B. Web search.
- C. Computer use.
- D. Memory.
Show answer
Answer: B.
Web search grounds answers in current information with citations; the others do not.
Q54D5 · Context Management and ReliabilityScenario 3Select one
A long-running agent degrades as the window fills with large, no-longer-needed tool outputs. Best fix?
- A. Bigger-window model.
- B. Context editing to clear stale tool results, preserving the conversation narrative.
- C. Restart each time.
- D. Increase max_tokens.
Show answer
Answer: B.
Clearing stale tool results is context editing.
Q55D5 · Context Management and ReliabilityScenario 3Select one
The conversation itself is too long but its thread must be preserved. Which mechanism?
- A. Context editing.
- B. Compaction: summarise server-side, preserving the narrative.
- C. Delete oldest turns.
- D. Switch to Haiku 4.5 for its window.
Show answer
Answer: B.
Compaction condenses the narrative when the conversation is too long.
Q56D5 · Context Management and ReliabilityScenario 3Select one
On Fable 5.1, editing earlier turns makes later responses inconsistent. Cause and fix?
- A. A model bug.
- B. Editing turns invalidates later thinking blocks; make the harness append-only and reclaim space via context editing/compaction.
- C. Bigger window.
- D. Turn thinking off.
Show answer
Answer: B.
Fable 5.1 is append-only; editing turns breaks thinking-block binding.
Q57D5 · Context Management and ReliabilityScenario 1Select one
A fallback from Fable 5.1 to an older model changes behaviour unexpectedly. Most likely reason?
- A. The older model has a bigger window.
- B. Fable 5.1 thinking blocks are readable only by that model or newer, so the older fallback silently drops them.
- C. Expired API key.
- D. Cold cache.
Show answer
Answer: B.
Thinking-block binding drops thinking on older fallbacks.
Q58D5 · Context Management and ReliabilityScenario 1Select two
Which TWO errors should be retried with backoff and jitter?
- A. 429 rate_limit.
- B. 400 invalid_request.
- C. 529 overloaded.
- D. 401 authentication.
- E. 413 request_too_large.
Show answer
Answer: A and C.
429 and 529 are transient; 400/401/413 are client-side.
Q59D5 · Context Management and ReliabilityScenario 6Select one
10,000 latency-tolerant extraction jobs must run cheaply overnight. Best choice?
- A. Real-time API at high concurrency.
- B. The Message Batches API (50% discount, results within 24h).
- C. One giant request.
- D. Haiku 4.5 in a tight synchronous loop.
Show answer
Answer: B.
Batch API fits latency-tolerant bulk at half price.
Q60D5 · Context Management and ReliabilityScenario 3Select one
An SRE monitors only average latency and misses 8-second tail responses. What should be added?
- A. Total request count.
- B. p95 (and p99) latency to capture the tail.
- C. Tool count.
- D. Model name.
Show answer
Answer: B.
p95/p99 expose the tail that averages hide.

Instructions

Domain distribution (matches the blueprint)

Score interpretation

Take the practice exam

Take the practice exam

By domain

Correction

All questions (review mode)