______________ helps prevent virtual machines from hoarding idle memory. The approach in ESX Server ensures that a virtual machine from which idle memory has been reclaimed can ramp up quickly to its full sharebased allocation once it starts using its memory more actively.

A.
Virtual Memory

B.
Memory overallocation

C.
Memory tax

D.
Memory Ballooning

Explanation:

Memory tax helps prevent virtual machines from hoarding idle memory. The approach in ESX Server ensures that a virtual machine from which idle memory has been reclaimed can ramp up quickly to its full share-based allocation once it starts using its memory more actively.