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Virtualization Quiz - Basic 03 to Basic 04

Total questions: 40

Worksheet time: 20mins

Name
Class
Date
1.

What is nested virtualization?

a)

Virtualizing only storage

b)

Running a VM inside another VM

c)

Virtualizing physical RAM

d)

Cloning virtual disks

2.

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

a)

lspci

b)

lsmod | grep kvm

c)

ifconfig -a

d)

virsh vmstat

3.

What is SR-IOV in virtualization?

a)

Backup feature

b)

Secure hypervisor mode

c)

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

d)

Software-defined storage

4.

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

a)

VirtualBox

b)

VMware Workstation

c)

KVM

d)

QEMU only

5.

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

a)

Uses GPU instead of CPU

b)

Avoids shared memory

c)

Places VM threads close to memory in the same NUMA node

d)

Disables paging

6.

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

a)

libvirt

b)

lxc

c)

podman

d)

qemu-guest-agent

7.

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

a)

It cannot emulate BIOS

b)

Higher overhead due to binary translation

c)

Incompatible with VMs

d)

Unable to share memory

8.

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

a)

.qcow2

b)

.cfg

c)

.xml

d)

.iso

9.

What’s the purpose of VM live migration?

a)

Clone VM to another disk

b)

Snapshot system settings

c)

Move a running VM to another host without downtime

d)

Encrypt disk I/O

10.

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

a)

Paravirtualization

b)

PCI Passthrough

c)

Ballooning

d)

Soft interrupts

11.

In VMware vSphere, what is DRS used for?

a)

Disaster Recovery Snapshot

b)

Distributed Resource Scheduler to balance workloads

c)

Domain Routing Scheme

d)

Disk Recovery System

12.

Which hypervisor uses dom0 and domU terminology?

a)

KVM

b)

Xen

c)

Hyper-V

d)

VMware ESXi

13.

What is the main benefit of using a thin-provisioned disk?

a)

Disk encryption

b)

Deduplication

c)

Allocates space on-demand to save storage

d)

Faster boot time

14.

What is "dirty page tracking" used for in VM migration?

a)

Monitoring network latency

b)

Identifying modified memory pages during live migration

c)

Analyzing corrupted sectors

d)

Checking disk fragmentation

15.

Which type of virtualization is typically used in Kubernetes environments?

a)

Full virtualization

b)

Emulation

c)

Container-based virtualization

d)

Nested virtualization

16.

Which technology allows cloud providers to reset a VM to a clean state automatically?

a)

Ephemeral instance

b)

VM cloning

c)

Backup snapshot

d)

Paravirtualization

17.

What’s the purpose of the “virtio” driver in KVM-based VMs?

a)

Increases encryption

b)

Provides high-performance I/O between host and guest

c)

Launches virtual desktop

d)

Configures BIOS settings

18.

Which of the following defines a virtual switch in hypervisor networks?

a)

Physical NIC

b)

Host firewall

c)

Software-based Layer 2 switch for connecting VMs

d)

DHCP relay

19.

Which Linux tool can convert a physical machine into a VM image?

a)

virt-top

b)

virt-p2v

c)

virt-clone

d)

kvm-img

20.

What is the default location of KVM virtual machine disk images in most Linux systems?

a)

/etc/libvirt/

b)

/var/lib/kvm/

c)

/mnt/virt/

d)

/var/lib/libvirt/images/

21.

Which virtualization security risk occurs when a compromised VM gains access to the hypervisor or other VMs?

a)

VM Drift

b)

VM Escape

c)

Hyperjacking

d)

VM Sprawl

22.

In KVM, what is the role of QEMU when paired with the kernel module?

a)

Allocates host memory

b)

Manages only GUI components

c)

Emulates hardware and device models for the VM

d)

Detects network latency

23.

Which technology allows a VM to be restarted on another host with preserved disk and memory state after failure?

a)

Cold migration

b)

High Availability (HA)

c)

Cloning

d)

Load Balancer

24.

Which method can optimize performance in a virtual environment by removing unused VM snapshots and stale templates?

a)

VM Encryption

b)

Snapshot Shredding

c)

Virtual Infrastructure Hygiene

d)

CPU Pinning

25.

Which virtualization solution provides secure, lightweight, microVMs suitable for serverless computing (e.g., AWS Firecracker)?

a)

XenServer

b)

QEMU

c)

Firecracker

d)

vSphere

26.

What does Vt-x or AMD-V enable in modern CPUs?

a)

GPU acceleration

b)

Hardware-assisted virtualization

c)

Filesystem encryption

d)

Virtual RAID

27.

Which VMware feature uses machine learning to predict and optimize VM placement?

a)

DRS

b)

vSAN

c)

vSphere with Tanzu

d)

DPM (Distributed Power Management)

28.

In a cloud hypervisor environment, what is the key difference between orchestration and automation?

a)

Automation is manual, orchestration is not

b)

Orchestration handles multiple automated tasks with dependencies

c)

Orchestration is faster

d)

Automation can’t scale

29.

Which feature isolates containers from each other on the same kernel?

a)

Snapshots

b)

VirtualBox

c)

Linux namespaces and cgroups

d)

BIOS security

30.

Which hypervisor is used in AWS EC2 instances?

a)

Xen and Nitro

b)

VMware

c)

KVM

d)

Hyper-V

31.

Which of the following helps avoid performance penalties when accessing PCI devices in virtual environments?

a)

IOMMU + PCI Passthrough

b)

vMotion

c)

Memory ballooning

d)

Virtual Switch Bridging

32.

What is the primary function of `virt-sysprep` in KVM/libvirt?

a)

Create VMs

b)

Prepare VMs for cloning by removing unique host identifiers

c)

Mount disks

d)

Encrypt the VM image

33.

Which tool in Linux can display and manage VM I/O performance metrics?

a)

sar

b)

iotop

c)

virt-top

d)

netstat

34.

Which technology ensures persistent memory access with very low latency for VMs?

a)

vSAN

b)

NVDIMM

c)

SSD RAID

d)

NUMA

35.

Which technique allows thin provisioning across multiple VMs while ensuring space savings?

a)

vCPU allocation

b)

Storage deduplication

c)

VM live snapshotting

d)

High Availability

36.

Which of the following is a security best practice for hypervisors?

a)

Enable promiscuous mode

b)

Share images across tenants

c)

Minimize host OS footprint and patch regularly

d)

Use shared passwords

37.

What is a vApp in the context of virtualization platforms like vSphere?

a)

A virtual file system

b)

A pre-configured software stack packaged with VMs

c)

An encrypted image

d)

A mobile hypervisor

38.

What is the primary limitation of PCI passthrough in virtual environments?

a)

Cannot assign more than 2 devices

b)

Poor memory performance

c)

The assigned device is no longer available to the host

d)

Requires Linux guests only

39.

Which component provides device emulation and control in the Xen hypervisor architecture?

a)

dom0

b)

domU

c)

VTPM

d)

VIF

40.

Which standard allows remote hypervisor management using a common API?

a)

REST

b)

SOAP

c)

libvirt

d)

RPC

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