Which of the following are valid use cases for VMware Fault Tolerance (Choose Three)?

A.
An administrator wants to provide continuous availability if a business critical application fails

B.
An administrator wants to provide on-demand fault tolerance for a virtual machine during a critical operation

C.
An administrator wants application high availability for applications that are not cluster aware

D.
An administrator wants to provide fault tolerance for one or more physical servers

E.
An administrator wants to provide continuous availability if a critical hardware component fails

Explanation:
vSphere Availability Guide ESX 4.0 ESXi 4.0 vCenter Server 4.0, Page 30.

Fault Tolerance Use Cases
1. Applications that need to be available at all times, especially those that have long-lasting client connections that users want to maintain during hardware failure. [E above]
2. Custom applications that have no other way of doing clustering. [C above]

Another key use case for protecting a virtual machine with Fault Tolerance can be described as On-Demand Fault Tolerance. In this case, a virtual machine is adequately protected with VMware HA during normal operation. During certain critical periods, you might want to enhance the protection of the virtual machine. [B above]