1. b Explanation::Virtual machine uses the datastore continues to run. 2. b Explanation:DVS has capability to maintain a network runtime state for virtual machines as they are migrated from one physical system to another. 3. b Explanation:The key feature that makes virtual infrastructure so appealing for organizations implementing a cloud computing solution is flexibility. 4. a Explanation:Block-based storage such as those used in SANs use a feature called a Logical Unit Identifier (LUN) with specific addresses stored in the form of an offset called the Logical Block Address (LBA). 5. b Explanation:Instantiating a virtual machine is a very fast process, typically only a few seconds in length. 6. a Explanation:The system imaging program is used to make this image and can be used later to restore a system image. 7. a Explanation:OVF stands for pen Virtualization Format. 8. a Explanation:AMI stands for Amazon Machine Image. 9. d Explanation:An AMI can be for public use under a free distribution license, for pay-per-use with operating systems such as Windows, or shared by an EC2 user with other users who are given the privilege of access. 10. b Explanation:The term virtual appliance is meant to differentiate the software image from an operating virtual machine.