Anthropic · CCAR-F
Plan mode and iterative refinement
CCAR-F · Lesson 11 of 18 · 1:22:35
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In this lesson
Prepare for the Claude Certified Architect – Foundations exam, on the exam guide version 1.0, effective July 2026. In this lesson: when to use plan mode or direct execution, the Explore subagent, combining planning and execution, input and output examples, test-driven iteration, the interview pattern, and when to group or separate problems. Includes three original practice questions.
Preview the topics
- A developer has a stack trace that points to one function, and the fix is a missing null check. Which approach fits?
- Claude keeps formatting Kestrel’s product names differently from what the team expects, despite a careful written description. What is the most effective fix?
- A change reveals three bugs: a rounding error in the totals, a tax calculation that depends on those totals, and an unrelated typo in an error message. How should the developer give these to Claude?