What is the function of a hypervisor?

What is the function of a hypervisor?

• A. Manages the distribution of the physical resources of a server to the VMs.
• B. Provides DNS resolution for domain names.
• C. Stores virtual machine images for backup.
• D. Encrypts traffic between host and VMs.

Answer: (A)

A hypervisor’s main role is to manage how the server’s physical resources are allocated to and shared by multiple virtual machines. It sits between the hardware and the VMs and handles scheduling CPU time, assigning memory, and directing storage and network I/O so each VM can run independently as if it had its own hardware. This virtualization layer provides isolation and efficient resource use, which is the core function of a hypervisor. DNS resolution, storing VM images for backup, and encrypting traffic are not the primary duties of a hypervisor. DNS is a network service for translating domain names, typically handled by DNS servers. VM image storage for backups is a job for backup or storage systems. Encrypting traffic between the host and VMs is a security measure implemented via encryption tools or secure networking configurations, not the fundamental role of the hypervisor.

A hypervisor’s main role is to manage how the server’s physical resources are allocated to and shared by multiple virtual machines. It sits between the hardware and the VMs and handles scheduling CPU time, assigning memory, and directing storage and network I/O so each VM can run independently as if it had its own hardware. This virtualization layer provides isolation and efficient resource use, which is the core function of a hypervisor.

DNS resolution, storing VM images for backup, and encrypting traffic are not the primary duties of a hypervisor. DNS is a network service for translating domain names, typically handled by DNS servers. VM image storage for backups is a job for backup or storage systems. Encrypting traffic between the host and VMs is a security measure implemented via encryption tools or secure networking configurations, not the fundamental role of the hypervisor.