1. What advantages does binary rewriting provide? Please choose all correct answers?

A. Has lower CPU overhead.

B. Uses less amount of memory

C. Does not require guest OS to be modified.

D. Does not require physical CPU being fully virtualizable.

2. With fair share scheduling algorithm, which of the following choices will effectively increase the chance a process being scheduled to CPU?

A. The process itself used more CPU recently.

B. All other processes in its group used more CPU recently.

C. All other processes not in its group used more CPU recently.

D. Starting more processes.

3. Assuming that the VM is configured with 2 virtual processors. Which of the following choices will a hypervisor scheduler try to do as possible as it could?

A. Schedules two virtual processors from the same VM to two threads on the same physical core.

B. Schedules two virtual processors from the same VM to two physical cores on the same NUMA node.

C. Schedules two virtual processors from the same VM independently.

D. Schedules a virtual processors to a different physical core than it was last running on.

4. Which of the following scheduling policies is preferred for a large VM, which is configured with more virtual processors than the physical cores on a single NUMA node?

A. Schedules all virtual processors randomly, to have an even distribution.

B. Schedules all virtual processors to a single NUMA node so that the guest OS can treat them uniformly.

C. Splits the virtual processors into groups (virtual NUMA nodes) that are placed to separate physical NUMA nodes, maps VM memory interleaved among the NUMA nodes, so that the guest OS does not have to be NUMA aware.

D. Splits the virtual processors into groups (virtual NUMA nodes) that are placed to separate physical NUMA nodes, exposes the virtual NUMA topology to the guest OS and have it handle the memory allocation.