Section 7 – Establish Service Levels
- Objective 7.2 – Enable a Fault Tolerant Virtual Machine
QUESTION 24
NPIV (N-Port ID Virtualization) is not supported with Fault Tolerance?
A.True
B.False
Answer: A
Explanation:
Mastering VMware vSphere 4, page 494
N-Port ID Virtualization (NPIV) is not supported with VMware FT.
QUESTION 25
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
Answer: BCE
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]
QUESTION 26
Which of the following is the technology used by VMware Fault Tolerance?
A.VMware vSafe
B.VMware vCluster
C.VMware vShield
D.VMware vLockstep
Answer: D
Explanation:
VMware Fault Tolerance (FT) protects a virtual machine in a VMware HA cluster.
VMware FT creates a secondary copy of a virtual machine and migrates that copy onto another host in the cluster. VMware vLockstep technology ensures that the secondary virtual machine is always running in lockstep synchronization to the primary virtual machine.
QUESTION 27
An administrator views the Fault Tolerance pane of the summary tab of a VM and finds that the current status is Not Protected. Which of the following is a valid reason the VM might not be protected (Choose Two)?
A.Disabled – Fault Tolerance is currently disabled
B.Stopped – Fault Tolerance has been stopped on the Secondary VM
C.Need Secondary VM – The Primary VM is running without a Secondary VM and is not protected
D.Need Primary VM – The Secondary VM is running and a new Primary VM can not be generated
Answer: AC
Explanation:
vSphere Availability Guide ESX 4.0 ESXi 4.0 vCenter Server 4.0, Page 37.
Table 3-2. Reasons for Primary VM Not Protected Status
