AI-102 Implement an agentic solution Practice Question
A company uses Microsoft Copilot Studio to create an agent that books meetings. The agent calls an external API to check room availability. The API requires a client certificate for authentication. Which authentication method should the developer configure in the custom connector?
⚠ Common exam trap
A common mix-up: candidates confuse 'Client Certificate' with 'API Key' or 'OAuth 2.0' because they all involve secrets, but only client certificates provide mutual TLS authentication where the server verifies the client's identity via a cryptographic certificate rather than a shared token or key.
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Client Certificate
The custom connector in Microsoft Copilot Studio must authenticate with an external API that requires a client certificate. The 'Client Certificate' authentication method is specifically designed for this scenario, where the connector presents an X.509 certificate to the API during the TLS handshake to prove its identity. This is the only option that directly supports certificate-based mutual TLS (mTLS) authentication.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
OAuth 2.0
Why it's wrong here
Not for client certificates.
- ✗
Windows Authentication
Why it's wrong here
Used for integrated Windows auth.
- ✗
API Key
Why it's wrong here
Not for certificates.
- ✓
Client Certificate
Why this is correct
Correct for certificate-based authentication.
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Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
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