Exam CISSP topic 1 question 410 discussion

PKI is what you want here.

Answer D) Using public key-based authentication method. https://nvlpubs.nist.gov/nistpubs/ir/2015/nist.ir.7966.pdf

D. Using public key-based authentication method. Public key-based authentication is particularly well-suited for scripted functions because it allows for automated, passwordless access to remote systems. With this method, a public key is generated and stored on the server, and a corresponding private key is used on the client-side for authentication. Since there are no passwords involved, scripted processes can use the private key to authenticate securely without manual password entry.

D. Once the app ID's public key is on the target server, the script just runs.

D is correct