CompTIA Cloud+ Practice Test

Which of the following allows dynamic allocation of memory to a virtual machine based on its workload?

1. Static memory

2. Dynamic memory

3. Virtual memory

4. Startup RAM

The correct answer is: Dynamic memory

Dynamic memory is a feature that enables the allocation of memory resources to a virtual machine based on its current workload demands. This capability allows a virtual machine to adjust its memory usage in real-time, allocating more memory when it is under heavy load and reducing it when the demand decreases. This is particularly beneficial in environments where workloads can be highly variable, as it optimizes resource usage and enhances overall system performance. With dynamic memory, virtualization platforms can manage the available physical memory more efficiently, allowing multiple virtual machines to share resources without overcommitting physical RAM. This flexibility helps to ensure that each virtual machine operates optimally according to its needs at any given moment, leading to better resource utilization across the server. In contrast, static memory would allocate a fixed amount of RAM to a virtual machine regardless of its workload, which could lead to inefficiencies and unutilized resources. Virtual memory pertains to an abstraction that allows a system to use disk space as if it were additional RAM, but does not dynamically allocate RAM resources like dynamic memory does. Startup RAM refers to the initial amount of RAM allocated when a virtual machine boots up, which is not adjusted based on workload during its operation.