Which operating system is NOT mentioned as being supported by OPM?

The correct answer identifies BSD as the operating system not mentioned as being supported by OPM, which stands for Operational Privileged Management. This is significant because OPM typically focuses on major and widely adopted operating systems that are prevalent in enterprise environments.

Linux, AIX, and Windows are commonly used in many corporate infrastructures and are therefore supported to ensure compatibility and security for their users. These operating systems have a large user base and are integral to various enterprise applications, making their inclusion in OPM's support list necessary for comprehensive management solutions.

In contrast, BSD, while respected and utilized in certain niches, does not have the same level of market penetration and enterprise demand that justifies dedicated support within OPM. This makes BSD the outlier in this context, highlighting the importance of choosing technologies that align with mainstream administrative and security tools.