What defines the functionality of virtual machines?

The hypervisor is a software layer that creates and runs virtual machines (VMs) by abstracting the physical hardware. It allocates and manages the virtualized CPU, memory, storage, and network resources that each VM uses, allowing multiple operating systems and applications to run concurrently on a single physical server. Incorrect options: The hypervisor operates at a lower level than Layer 3 (network layer) and its communication with VMs is not solely dependent on Layer 3. A hypervisor is designed to support multiple virtual machines and can manage multiple virtual switches to connect them. While virtualized servers can connect to physical switches, their efficiency is primarily determined by the hypervisor's resource management and the underlying physical server's capabilities, not by a separate physical switch for the hypervisor itself.