CompTIA Security+ (SY0-501) — Question 143

User from two organizations, each with its own PKI, need to begin working together on a joint project. Which of the following would allow the users of the separate
PKIs to work together without connection errors?

Answer options

• A. Trust model
• B. Stapling
• C. Intermediate CA
• D. Key escrow

Correct answer: A

Explanation

The correct answer is A, as a Trust model enables different PKIs to recognize and validate each other's certificates, allowing users to communicate securely. The other options do not provide the necessary framework for trust between separate PKIs; Stapling is related to OCSP responses, Intermediate CA refers to a specific type of certificate authority, and Key escrow involves the storage of cryptographic keys, which does not directly address interoperability.