Which two guest operating systems can be deployed on a virtual machine? (Choose two.)

In the context of deploying guest operating systems on a virtual machine, MacOS and Microsoft Windows are both viable options.

Deploying MacOS on a virtual machine typically requires a Mac hardware base due to Apple's licensing policies. It's often leveraged for development purposes or testing of applications within a macOS environment. Virtualization solutions, like VMware Fusion, support running MacOS in a virtual machine on compatible Apple hardware.

Microsoft Windows is another commonly deployed guest operating system in virtual machines. Windows is natively supported by virtualization platforms such as VMware vSphere and Workstation, and it is widely used in enterprise environments for various applications. The support for different Windows versions is robust, facilitating easy management of Windows-based applications and services in a virtualized setup.

The other choices, such as T/TOS and iOS, are not typically deployable as guest operating systems in standard virtual environments. T/TOS, being a specialized system often used in specific high-availability environments, may have limited support in virtualization contexts. iOS, designed for mobile devices, is not intended to be run in a desktop or server virtualization environment due to its strict hardware requirements and licensing restrictions.