I0 points] In virtualization (example: VitualBox, VMware, a host operating system can run several so-called "guest operating systems". Each guest operating system runs as a non-privileged user process, but is tricked into thinking it is running on the bare hardware. 60 a. 5 pointsl Briefly describe (at a very high level), how such a concept could be realized. b. 15 points] How is such a virtualization concept related to interrupts/exceptions