CCAR Prep

Objective 3.7 · Domain 3 · 19% of the exam

Evaluate connection protocols and select the appropriate integration mechanism (MCP, API/CLI, agent-to-agent)

Choosing the connection mechanism, whether that is the Model Context Protocol, a direct API or CLI integration, or agent-to-agent communication. MCP is the answer when you want a standard, discoverable interface reusable across clients and tools. A direct API call is the answer when the integration is one-off, latency-critical or already built. Reach for agent-to-agent only when the other side genuinely needs autonomy, and not when it is a function you could call.

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The rest of domain 3: Integration

This domain is 19% of a scored form, about 12 of the 63 questions, spread across 8 objectives. Drill the whole domain or pick another objective below.

One objective is a narrow slice. A full-length timed mock is what tells you whether the whole thing holds together.

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