All connections to the Autonomous Data Warehouse cloud utilize which authentication methods?

The correct answer highlights the use of certificate-based authentication along with SSL in the context of connecting to the Autonomous Data Warehouse cloud. Certificate-based authentication is a secure method that relies on digital certificates to verify the identity of users or systems. This type of authentication establishes a strong trust framework, minimizing risks associated with password-based methods, such as phishing or weak passwords.

Secure Sockets Layer (SSL) provides encryption for the data in transit, ensuring that information sent between the client and the server cannot be easily intercepted by unauthorized parties. Together, certificate-based authentication and SSL create a robust security model for accessing sensitive data within the Autonomous Data Warehouse.

The other options involve methods that are either less secure or do not encapsulate the authentication standards typically used for cloud services of this nature. For example, password-based authentication may pose security risks due to the possibility of password theft, while methods involving SSH or token systems as highlighted in the incorrect answers may not align with the current protocols in use for accessing the Autonomous Data Warehouse.