Consider the features of virtualization modes.
Which three statements are correct?
A.
With full virtualization (FV), all aspects of a guest OS are virtualized. The guest OS running on a virtual machine (VM) can run unmodified.
B.
With paravirealization (PV), the paravidualized guests run a modified version of the guest OS, which communicates with the hypervisor by using hypercalls.
C.
PV takes advantage of the virtualization hardware extensions offered by the physical server. These hardware extensions are required to run paravidualized VMs.
D.
Xen is a type-2 hypervisor that allows guests to run either as fully paravidualized (PV guests) or as hardware vidualized (HVM guests), with or without paravidualized drivers.
E.
The Oracle Linux Unbreakable Enterprise Kernel (UEK) is a PVOPS kernel that contains all paravi dualized drivers and can determine whether the underlying system suppods FV or PV operations.
??? don’t know this one
A, B, E
o PV does not require virtualization extensions from the host CPU and thus
enables virtualization on hardware architectures that do not support
Hardware-assisted virtualization.
o The Xen Project hypervisor is an open-source type-1 or baremetal
hypervisor, which makes it possible to run many instances of an operating
system or indeed different operating systems in parallel on a single
machine (or host).
o Full Virtualization (FV) or Hardware-assisted virtualizion (HVM) uses
virtualization extensions from the host CPU to virtualize guests. HVM
requires Intel VT or AMD-V hardware extensions.
o A hypercall is to a syscall what a hypervisor is to an OS. Alternatively,
a hypercall is to a hypervisor what a syscall is to a kernel.
o Oracle Linux supports KVM, Xen Project, and Oracle VM Server for x86,
which is based on Xen.
A B E correct
D wrong type 2 only: workstation and virtual box
C wrong Hareware extion can work with PV but not required