Black and Wiliam (1998a) also noted that for assessment to function formatively, the feedback information had to be used, and thus the differential treatments that are incorporated in response to the feedback are at the heart of effective learning.
A hypervisor is a unique type of software that allows a computer to run more than one operating system (OS). Through a process known as virtualization, the software tricks each OS into thinking it has exclusive access to a particular set of hardware.
The concept of Paravirtualization is very similar to that of the hypervisor principle. A software hypervisor is installed on a physical server and a guest OS is installed into the environment. The difference is that the guest OS needs to âknowâ that it is virtualized to take advantage of the functions.