What is nested virtualization?

• Virtualizing only storage

• Running a VM inside another VM

• Virtualizing physical RAM

• Cloning virtual disks

Which command can check whether KVM modules are loaded in a Linux system?

• lspci

• lsmod | grep kvm

• ifconfig -a

• virsh vmstat

What is SR-IOV in virtualization?

• Backup feature

• Secure hypervisor mode

• Allows a single physical device to be accessed by multiple VMs as virtual devices

• Software-defined storage

Which hypervisor supports direct pass-through of PCI devices to guest OSes?

• VirtualBox

• VMware Workstation

• KVM

• QEMU only

Which of the following describes NUMA-aware scheduling in virtualization?

• Uses GPU instead of CPU

• Avoids shared memory

• Places VM threads close to memory in the same NUMA node

• Disables paging

Which open-source project provides APIs and CLI tools to manage VMs, networks, and storage on KVM?

• libvirt

• lxc

• podman

• qemu-guest-agent

What is a major disadvantage of full virtualization without hardware assistance?

• It cannot emulate BIOS

• Higher overhead due to binary translation

• Incompatible with VMs

• Unable to share memory

Which file describes a domain (VM) configuration in KVM using libvirt?

• .qcow2

• .cfg

• .xml

• .iso

What’s the purpose of VM live migration?

• Clone VM to another disk

• Snapshot system settings

• Move a running VM to another host without downtime

• Encrypt disk I/O

Which virtualization feature ensures a VM has dedicated access to specific hardware components?

• Paravirtualization

• PCI Passthrough

• Ballooning

• Soft interrupts