What is the purpose of attestation boundary checks between zones?

• A. To verify the identity and integrity of components before allowing cross-zone access
• B. To rapidly route traffic between zones
• C. To replace encryption between zones
• D. To disable logs when crossing zones

Answer: (A)

Attestation boundary checks ensure trust at the boundary between zones by requiring a component to prove who it is and that its software and hardware haven’t been tampered with before it can cross into another zone. When a cross-zone request happens, the system gathers attestation evidence from a trusted source (such as a hardware root of trust or secure enclave) that confirms the component’s identity and the measured state of its software stack. If this evidence meets the security policy, access across the boundary is allowed; otherwise, it’s blocked or restricted. This prevents compromised or impersonated components from moving into a higher-trust area and helps maintain the system’s security integrity. It’s not primarily about routing traffic, it doesn’t replace encryption, and it doesn’t involve disabling logs.