Which of the following types of guest systems does Xen support? (Choose two.)

Question

Options

• AForeign architecture guests (FA)
• BParavirtualized quests (PVI
• CEmulated guests
• DContainer virtualized guests
• EFully virtualized guests

• A
  12% (6)
• B
  80% (41)
• C
  2% (1)
• D
  6% (3)

Explanation

Xen supports two types of guest systems: paravirtualized guests (PV) and fully virtualized guests Paravirtualized guests (PV) are guests that have been modified to run on the Xen hypervisor. They use a special kernel that communicates with the hypervisor through hypercalls, and use paravirtualized drivers for I/O devices. PV guests can run faster and more efficiently than HVM guests, but they require the guest operating system to be ported to Xen and to support the Xen Fully virtualized guests (HVM) are guests that run unmodified operating systems on the Xen hypervisor. They use hardware virtualization extensions, such as Intel VT-x or AMD-V, to create a virtual platform for the guest. HVM guests can run any operating system that supports the hardware architecture, but they incur more overhead and performance penalties than PV guests. HVM guests can also use paravirtualized drivers for I/O devices to improve their performance.

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