Quiz on Cloud Computing and Virtualization

What is the primary purpose of virtualization?

• To enhance resource sharing and improve performance

• To increase hardware costs

• To limit application flexibility

• To reduce the number of physical machines

What is a hypervisor?

• A hardware component that manages memory

• A type of physical machine

• A software layer that allows multiple operating systems to run on a host machine

• A virtual machine that cannot be modified

Which level of virtualization involves modifying the guest operating systems?

• Para virtualization

• Library support level virtualization

• Full virtualization

• Operating system level virtualization

What is the main advantage of hardware-assisted CPU virtualization?

• It requires no modifications to the guest OS

• It reduces the number of virtual machines

• It increases the complexity of the system

• It simplifies the implementation of binary translation

What does I/O virtualization manage?

• The routing of I/O requests between virtual devices and shared physical hardware

• The installation of guest operating systems

• The allocation of CPU resources

• The memory management of virtual machines

What is a virtual cluster?

• A type of hypervisor

• A single physical machine

• A collection of VMs from one or more physical clusters

• A collection of physical machines

Which of the following is a disadvantage of full virtualization?

• It does not support multiple operating systems

• It is less flexible than para virtualization

• It can lead to lower performance due to binary translation

• It requires modifications to the guest OS

What is the role of Domain0 in the Xen architecture?

• It is a non-privileged guest OS

• It manages hardware resources and controls other guest OSes

• It runs all applications directly

• It is responsible for memory management only

What is the main function of a virtual machine monitor (VMM)?

• To run applications directly on hardware

• To provide network services

• To manage the execution of virtual machines

• To replace the host operating system

What is the purpose of live migration in virtual clusters?

• To permanently move a VM to a different physical machine

• To allow VMs to run on multiple physical machines simultaneously

• To transfer a VM while it is still running

• To shut down all VMs before moving them