What is the primary function of a virtual machine manager (hypervisor)?

The primary function of a virtual machine manager, also known as a hypervisor, is to control virtual machines. A hypervisor allows multiple virtual machines to run on a single physical host by abstracting the underlying hardware resources. This enables these virtual machines to operate as independent systems, sharing the same physical resources while isolating their operations from one another.

This capability is essential for maximizing hardware utilization, enabling efficient resource allocation, and supporting various operating systems on a single hardware platform. Through the hypervisor, administrators can manage the lifecycle of virtual machines, including creation, suspension, and deletion, allowing for flexible and dynamic IT environments.

In contrast, options like providing physical security, managing storage systems, and enhancing server cooling are not core functions of a hypervisor. While these activities are crucial for an overall IT infrastructure, they fall outside the specific responsibilities of a virtual machine manager.