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.
But What is KVM, and how does it provide a virtual platform for the Cloud? Hypervisor Technology. KVM is the acronym for Kernel-based Virtual Machine, a hypervisor technology that is part of the mainline Linux kernel and it can be used on nearly every distribution of Linux available on the market. Basically, KVM is a type-2 hypervisor (installed on top of another OS, in this case some flavor of Linux). It runs, however, like a type-1 hypervisor and can provide the power and functionality of even the most complex and powerful type-1 hypervisors, depending on the tools that are used with the KVM package itself.