Which of the following are benefits of using resource pools? (Choose Three.)

A.
access control and delegation

B.
decreased virtualization overhead

C.
isolation between pools, sharing within pools

D.
improved network utilization

E.
flexible hierarchical organization

Explanation:
vSphere Resource Management Guide ESX 4.0 ESXi 4.0 vCenter Server 4.0, page 36.
Why Use Resource Pools?
Resource pools allow you to delegate control over resources of a host (or a cluster), but
the benefits are evident when you use resource pools to compartmentalize all resources in
a cluster. Create multiple resource pools as direct children of the host or cluster and
configure them. You can then delegate control over the resource pools to other
individuals or organizations.
Using resource pools can result in the following benefits.
Flexible hierarchical organization-Add, remove, or reorganize resource pools or change
resource allocations as needed.
Isolation between pools, sharing within pools-Top-level administrators can make a pool
of resources available to a department-level administrator. Allocation changes that are
internal to one departmental resource pool do not unfairly affect other unrelated resource
pools.
Access control and delegation-When a top-level administrator makes a resource pool
available to a department-level administrator, that administrator can then perform all
virtual machine creation and management within the boundaries of the resources to
which the resource pool is entitled by the current shares, reservation, and limit settings.
Delegation is usually done in conjunction with permissions settings.
Part 3: Deploy vApps (7 questions).