00 — Quiz: foundations

Pick an answer. The quiz checks it and shows the explanation.

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1. Claude Code runs npm test. Who executes the command?

a) the model

b) the host

c) an MCP server

d) Anthropic's servers

b — the model only requests the command. The host (Claude Code) runs built-in tools like Bash.

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2. You add a plugin that ships two skills and one hook. Does it need MCP?

a) yes, plugins are MCP servers

b) no

c) only for the hook

d) only for the skills

b — a plugin is a package of extensions. MCP config is optional.

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3. Yesterday you saved "staging is eu-west-3" to memory. Today Claude knows it. What happened?

a) the model was retrained

b) Anthropic stored it server-side

c) a file was loaded into today's context

d) a hook injected it

c — memory is files loaded into context in later sessions. It never retrains the model.

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