Which type of memory allows a virtual machine to adjust its RAM based on workload demands?

Dynamic memory allows a virtual machine to adjust its RAM allocation based on real-time workload demands. This feature is particularly beneficial in cloud environments, where varying workloads can lead to fluctuations in memory requirements. For example, when a virtual machine needs more memory due to increased activity, dynamic memory can allocate additional resources seamlessly. Conversely, if the workload decreases, it can release underutilized memory back to the resource pool, optimizing resource utilization and reducing overall costs.

This functionality enhances the efficiency of virtualized environments, promoting better performance and resource management. Static memory, on the other hand, allocates a fixed amount of RAM that does not change regardless of workload, which can lead to inefficient resource usage. Virtual memory is a separate concept that refers to a memory management capability that provides an "idealized abstraction" of main memory, allowing the system to use disk space to simulate additional RAM but doesn't directly adjust RAM allocation for VMs. Startup RAM is the default memory assigned to a VM on boot and does not represent adaptability based on workload. Thus, dynamic memory is the correct choice as it embodies the flexibility needed in cloud computing scenarios.