CompTIA Cloud+ Practice Test

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What is the key benefit of memory ballooning in virtualized environments?

Increased Storage Capacity
Improved Network Speed
Efficient Memory Usage
Easier Backup Processes

The correct answer is: Efficient Memory Usage

The key benefit of memory ballooning in virtualized environments is efficient memory usage. This technique allows a hypervisor to reclaim unused memory from virtual machines (VMs) and reallocate it to other VMs that may require more memory at any given time. This dynamic adjustment ensures that the available physical memory is utilized effectively, optimizing the performance of all VMs running on the host. By allowing the hypervisor to manage memory more flexibly, memory ballooning can enhance the performance of applications running in VMs, as they can receive additional memory when needed without requiring a complete reboot. This efficient usage of physical memory helps prevent situations where VMs are under or over-provisioned, leading to better overall resource management within the virtualized environment.