Which of the following is NOT a required endpoint operating system for Tanium Cloud?

Tanium Cloud is designed to support a range of operating systems for endpoint management, which typically includes widely used systems like Windows and macOS. These operating systems are crucial for the functioning and deployment of Tanium’s services, as they represent a significant portion of the endpoints in many business environments.

In contrast, Solaris represents a more specialized and less common platform when it comes to endpoint monitoring and management. While it may be utilized in specific enterprise environments, it is not a standard requirement for Tanium Cloud deployment. This is why it is correct to identify that this operating system is not explicitly required for Tanium Cloud's operation.

Additionally, Unix is a broad family of operating systems, and many variations are utilized in enterprise settings, making it a more relevant choice in the context of endpoint compatibility for Tanium Cloud. Therefore, Windows and macOS are essential, while Solaris does not fit the standard requirement set by Tanium Cloud, confirming its status as the correct answer.