Podcast
Questions and Answers
What was the primary motivation behind the development of virtualization in the 1960s?
What was the primary motivation behind the development of virtualization in the 1960s?
- To reduce the cost of mainframe computers
- To simplify the management of business services
- To increase the processing power of individual users
- To enable concurrent running of diverse workloads on the same physical hardware (correct)
What is the term for the combination of an operating system, its applications, and its virtual resources?
What is the term for the combination of an operating system, its applications, and its virtual resources?
- Guest domain
- Hypervisor
- Virtual resource
- Virtual machine (correct)
What is the primary function of the virtualization layer?
What is the primary function of the virtualization layer?
- To manage the allocation of real hardware resources
- To provide isolation guarantees across VMs
- To support the coexistence of multiple VMs and provide isolation guarantees (correct)
- To enable multiple VMs to exist on a single physical machine
What is the term for the underlying functionality that enables virtual machines to exist?
What is the term for the underlying functionality that enables virtual machines to exist?
What is a virtual machine, according to the definition?
What is a virtual machine, according to the definition?
What is the term used to refer to the operating systems that are deployed on the same physical platform?
What is the term used to refer to the operating systems that are deployed on the same physical platform?
Which company has the largest share of server cores and has mandated device manufacturers to develop drivers that can be used by the hypervisor?
Which company has the largest share of server cores and has mandated device manufacturers to develop drivers that can be used by the hypervisor?
What is the primary responsibility of a VMM in terms of hardware representation?
What is the primary responsibility of a VMM in terms of hardware representation?
What is the goal of the VMM in terms of performance?
What is the goal of the VMM in terms of performance?
What type of virtualization model uses a full-fledged host OS that manages all of the hardware resources?
What type of virtualization model uses a full-fledged host OS that manages all of the hardware resources?
What is the benefit of consolidation in virtualization?
What is the benefit of consolidation in virtualization?
What is the benefit of the hosted model in terms of functionality development?
What is the benefit of the hosted model in terms of functionality development?
What is the advantage of virtualization in terms of migration?
What is the advantage of virtualization in terms of migration?
What is the purpose of the QEMU hardware emulator in the KVM setup?
What is the purpose of the QEMU hardware emulator in the KVM setup?
What is the advantage of virtualization in terms of availability and reliability?
What is the advantage of virtualization in terms of availability and reliability?
What is the main advantage of the KVM virtualization solution?
What is the main advantage of the KVM virtualization solution?
What is the primary responsibility of the VMM module in the hosted model?
What is the primary responsibility of the VMM module in the hosted model?
What is the purpose of a service VM in bare-metal virtualization?
What is the purpose of a service VM in bare-metal virtualization?
What is the name of the privileged domain in the Xen virtualization software?
What is the name of the privileged domain in the Xen virtualization software?
What is the purpose of protection levels in virtualization setups?
What is the purpose of protection levels in virtualization setups?
What is the issue with device drivers in bare-metal virtualization?
What is the issue with device drivers in bare-metal virtualization?
What is the term for the process of switching control from the guest OS to the hypervisor in a virtualization setup?
What is the term for the process of switching control from the guest OS to the hypervisor in a virtualization setup?
What is the term for the process of switching control from the hypervisor back to the guest OS in a virtualization setup?
What is the term for the process of switching control from the hypervisor back to the guest OS in a virtualization setup?
What is the primary benefit of virtualization for operating systems research?
What is the primary benefit of virtualization for operating systems research?
What is the advantage of virtualization for supporting legacy operating systems?
What is the advantage of virtualization for supporting legacy operating systems?
What happens when a privileged instruction is issued by the guest OS?
What happens when a privileged instruction is issued by the guest OS?
What was the issue with the 17 hardware instructions in x86 platforms before 2005?
What was the issue with the 17 hardware instructions in x86 platforms before 2005?
What is the goal of binary translation?
What is the goal of binary translation?
What is done to the code blocks that contain one of the 17 hardware instructions in binary translation?
What is done to the code blocks that contain one of the 17 hardware instructions in binary translation?
What is the main difference between full virtualization and paravirtualization?
What is the main difference between full virtualization and paravirtualization?
What are the hypercalls similar to in paravirtualization?
What are the hypercalls similar to in paravirtualization?
Why does the guest OS assume that the change was successful when it issues a privileged instruction?
Why does the guest OS assume that the change was successful when it issues a privileged instruction?
What is the purpose of caching translated code fragments in binary translation?
What is the purpose of caching translated code fragments in binary translation?
What is the consequence of not modifying the guest OS in full virtualization?
What is the consequence of not modifying the guest OS in full virtualization?
What is the name of the strategy used by the hypervisor to handle privileged instructions?
What is the name of the strategy used by the hypervisor to handle privileged instructions?
What is a key requirement for full virtualization?
What is a key requirement for full virtualization?
What is the purpose of the hypervisor's shadow page table?
What is the purpose of the hypervisor's shadow page table?
Why does the hypervisor need to write-protect the page table?
Why does the hypervisor need to write-protect the page table?
What is the benefit of paravirtualization?
What is the benefit of paravirtualization?
What is the purpose of the MMU and TLB in memory virtualization?
What is the purpose of the MMU and TLB in memory virtualization?
What is the difference between physical addresses and machine addresses?
What is the difference between physical addresses and machine addresses?
What happens when the guest OS tries to establish new address mappings in full virtualization?
What happens when the guest OS tries to establish new address mappings in full virtualization?
Why does the hypervisor need to maintain consistency between the two page tables?
Why does the hypervisor need to maintain consistency between the two page tables?
What is the advantage of batching page table updates into a single hypercall in paravirtualization?
What is the advantage of batching page table updates into a single hypercall in paravirtualization?
What is the benefit of newer hardware platforms in terms of memory virtualization?
What is the benefit of newer hardware platforms in terms of memory virtualization?
What was the primary issue with the initial x86 architecture regarding virtualization?
What was the primary issue with the initial x86 architecture regarding virtualization?
What is the purpose of a VM control block?
What is the purpose of a VM control block?
What is the benefit of extended page tables and tagged TLBs in virtualization?
What is the benefit of extended page tables and tagged TLBs in virtualization?
What is the purpose of multiqueue devices in virtualization?
What is the purpose of multiqueue devices in virtualization?
What was added to the x86 architecture to support virtualization?
What was added to the x86 architecture to support virtualization?
What is the purpose of tagging memory structures with VM identifiers?
What is the purpose of tagging memory structures with VM identifiers?
What is the primary concern in the passthrough model of device virtualization?
What is the primary concern in the passthrough model of device virtualization?
Which device virtualization model allows for device sharing and easy migration of guest VMs?
Which device virtualization model allows for device sharing and easy migration of guest VMs?
What is the main benefit of the split device driver model compared to the hypervisor-direct model?
What is the main benefit of the split device driver model compared to the hypervisor-direct model?
What is the main limitation of the passthrough model in terms of device access?
What is the main limitation of the passthrough model in terms of device access?
Which device virtualization model requires modification of the front-end driver?
Which device virtualization model requires modification of the front-end driver?
What is the main benefit of the hypervisor-direct model in terms of device access?
What is the main benefit of the hypervisor-direct model in terms of device access?
Which device virtualization model is also known as the VMM-bypass model?
Which device virtualization model is also known as the VMM-bypass model?
What is the main challenge of the passthrough model in terms of migration of guest VMs?
What is the main challenge of the passthrough model in terms of migration of guest VMs?
Which device virtualization model involves a component that resides in a guest VM and a component that resides in a hypervisor layer?
Which device virtualization model involves a component that resides in a guest VM and a component that resides in a hypervisor layer?
What is the main benefit of the split device driver model in terms of device management?
What is the main benefit of the split device driver model in terms of device management?
