CCARF Practice Question

Paper 5 · Question 28

D3 Claude Code Configuration & Workflows · Paper 5

[Scenario: Code Generation with Claude Code] You’re tasked with restructuring your team’s monolithic application into microservices. This impacts changes across dozens of files and requires decisions about service boundaries and module dependencies. Which approach should you choose?

• A.Switch to planning mode to explore the codebase, understand dependencies, and design the implementation approach before making changes.
• B.Start in direct execution mode and switch to planning only after encountering unexpected complexity during implementation.
• C.Start in direct execution mode and make incremental changes, letting implementation reveal natural service boundaries.
• D.Use direct execution with detailed upfront instructions that specify each service structure.

Show answer & explanations

Correct answer: A

A: Planning mode is the right strategy for complex architectural restructuring like splitting a monolith: it allows safe exploration and informed decisions about boundaries before committing to potentially expensive changes across many files.

B: Switching to planning after the first unexpected edit means some of the split is already written. Planning is for before that.

C: Boundaries discovered by editing are expensive to undo across dozens of files.

D: Instructions that name each service skip the exploration. The dependencies are not known yet.

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