Which of the following is not one of Popek and Goldberg's properties that a VMM would need to exhibit in order to be considered efficient: a) Isolation b) Fidelity c) Persistence d) Performance What two information technology trends helped drive the need for virtualization? a) The growing expense and decline of mainframe computer usage b) The explosive growth of Microsoft Windows on servers in corporate datacenters c) The expansion of Unix and Linux use for applications d) The constantly increasing capabilities of corporate servers due to Moore's Taw 5. Virtualization was developed and used on computers during which decade? a) 1960s b) 1970s c) 1980s d) 1990s e) 2000s Companies use virtualization to do all of the following except: a) Reduce the amount of datacenter floor space used b) Reduce the amount of electricity they consume in their datacenters c) Reduce the number of application in corporate datacenters d) Reduce the number of servers in the datacent