Which virtualization technology enables running multiple virtual machines on a single physical server?

Which virtualization technology enables running multiple virtual machines on a single physical server?

• A. Hypervisor
• B. Containerization
• C. Virtual Hard Disk
• D. Data deduplication

Answer: (A)

The correct answer is hypervisor. A hypervisor is a software layer that enables the creation and management of virtual machines (VMs) on a physical server. It sits directly on top of the hardware or on an operating system and allocates resources like CPU, memory, and storage to each VM. This allows multiple operating systems to run concurrently on a single physical server, providing a high level of efficiency in resource utilization and isolation between the different environments. Hypervisors can be categorized into two types: Type 1, which runs directly on the hardware (also known as bare-metal hypervisors), and Type 2, which runs on a host operating system. Both types enable the creation and management of multiple virtual instances, facilitating server consolidation, load balancing, and disaster recovery scenarios. The other choices refer to different technologies related to virtualization and resource management but do not specifically enable the running of multiple VMs on a physical server. Containerization, for example, focuses on packaging applications and their dependencies in containers that share the same OS kernel, but it is not the same as running full-fledged VMs. Virtual Hard Disk pertains to the storage aspect of virtualization, which is utilized for storing VM images but does not itself manage or run the VMs.

The correct answer is hypervisor. A hypervisor is a software layer that enables the creation and management of virtual machines (VMs) on a physical server. It sits directly on top of the hardware or on an operating system and allocates resources like CPU, memory, and storage to each VM. This allows multiple operating systems to run concurrently on a single physical server, providing a high level of efficiency in resource utilization and isolation between the different environments.

Hypervisors can be categorized into two types: Type 1, which runs directly on the hardware (also known as bare-metal hypervisors), and Type 2, which runs on a host operating system. Both types enable the creation and management of multiple virtual instances, facilitating server consolidation, load balancing, and disaster recovery scenarios.

The other choices refer to different technologies related to virtualization and resource management but do not specifically enable the running of multiple VMs on a physical server. Containerization, for example, focuses on packaging applications and their dependencies in containers that share the same OS kernel, but it is not the same as running full-fledged VMs. Virtual Hard Disk pertains to the storage aspect of virtualization, which is utilized for storing VM images but does not itself manage or run the VMs.