What is Virtualization? Flashcards
Virtual Machines are a virtualized instance of what?
a entire operating system
a virtual machine may full the role of what two possiblities?
- server
2. desktop/workstation
the outside world sees the VM as what ?
an actual physical machine
applications are generally unaware of what in a VM environment ?
their non-physical environment
when doing performance tuning , what area do you need to tune?
the physical system and the virtual machine.
w.r.t VM what is the host ?
the underlying physical operation system managing one or more VM.
w.r.t VM what is the guest?
is the VM which is an instance of a complete operating system, running one or more applications.
what is sometimes called the client?
the guest or VM.
low level performance tuning is best done on what?
the host device
application tuning is done mostly on what ?
the guest or VM .
the first implementations of virtualization on the pc were done through what?
emulators
an emulator runs completely in what ?
software
what is hardware virtualization?
the guest system runs without being aware it is running as a virtualized guest, and does not require modifcations to be run in this fushion. it is also known as full Virtualization
What is Full Virtualization?
the guest system runs without being aware it is running as a virtualized guest, and does not require modifcations to be run in this fushion. it is also known as full Virtualization
What is para-vritualization?
the guest system is aware it is running in a visualized environment , and has been modified specifically to work with it.
