CompTIA Cloud+ Practice Test

What technology allows multiple virtual machines to operate on a single physical server?

1. Virtualization

2. Containerization

3. Clustering

4. Grid computing

The correct answer is: Virtualization

Virtualization is the technology that allows multiple virtual machines to operate on a single physical server. It creates a software-based representation of hardware resources, which enables the partitioning of a physical server into multiple isolated environments called virtual machines (VMs). Each VM can run its operating system and applications independently, sharing the underlying physical resources of that single server. This separation allows for efficient resource utilization, as multiple VMs can run on a single server, reducing hardware and energy costs. It also provides flexibility in managing workloads, as VMs can be easily created, moved, or modified as needed. Containerization, while similar in the sense that it allows for multiple applications to run on a single server, focuses on encapsulating applications along with their dependencies in containers rather than emulating entire virtual machines with separate operating systems. Clustering involves linking multiple servers to work together as a single system for increased performance or redundancy, but it does not allow multiple VMs on a single physical server. Grid computing is a distributed computing model that involves a network of computers working together on shared tasks but does not directly relate to running multiple VMs on one physical machine.