4. What Citrix Xen Server feature permits the memory utilization of existing VMs to be compressed so that additional VMs can boot on the host?

a. Readyboost

b. Virtual memory

c. Memory ballooning

d. Dynamic Memory allocation

5. What virtual disk type is used to store changes made to an image when you decide to keep a copy of a previous version of the image?

a. differencing disk

b. disk version

c. versioning disk

d. disk snap

6. Which virtual disk type uses only as much datastore space as the disk initially needs?

a. thick provision eager zeroed

b. thin provision

c. thick provision lazy zeroed

d. thick provision

7. With which virtual disk type is space fully allocated at creation time?

a. thick provisioning

b. thin provisioning

c. fat provisioning

d. NTFS provisioning