What are three true statements about quiescing virtual machine snapshots? (Choose three.)

An administrator has deployed a vSphere 5 implementation. Due to security reasons the system state of a virtual machine must be reverted on a regular basis.

What feature will meet this requirement?

An administrator is upgrading an application running in a virtual machine. Before performing the upgrade, a snapshot called pre-upgrade is created. No other snapshots exist. The upgrade operation succeeds and the administrator wants to keep the changes from the snapshot.

Which two operations can the administrator perform to ensure that the upgrade cannot be reverted? (Choose two.)

Which two migration techniques can be used to move virtual disk files to another datastore? (Choose two.)

Users are experiencing performance issues when updating their database hosted on a virtual machine. The administrator determines that disk I/O is high across all HBAs on the ESXi host containing the virtual machine.

What action will most likely correct the issue without significantly impacting other users?

Which two statements are true about High Priority vMotion requests in vSphere 5.x? (Choose two.)

Which two conditions must exist on all hosts in the cluster if Enhanced vMotion Compatibility (EVC) is used? (Choose two.)

An administrator is enabling Enhanced vMotion Compatibility in a DRS cluster. The administrator wants the greatest degree of flexibility when adding new hosts to the cluster.

Which setting satisfies this requirement?

Under which two situations does the dead space reclamation feature of VAAI Thin Provisioning offer the ability to reclaim blocks of a thin provisioned LUN on a array? (Choose two.)

When migrating a machine with vMotion, what are two differences between high priority and standard priority? (Choose two.)