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1. CORRECT TEXT.

When using direct Linux booting to start Linux within a KVM virtual machine, which KVM parameter is used to specify parameters for the Linux Kernel? (Specify ONLY the option name without any values or parameters.)

append, -append

2. What is libvirt?

An identity manager used to provide Single-Sign-On for different operating systems.

A driver package used to support 3D printers.

A cluster manager used to handle node access to shared storage.

A combined interface to several virtualization products.

A Linux-based virtualization hypervisor.

3. Which of the following products use container-based virtualization? (Choose THREE correct answers.)

KVM

Linux VServer

LXC

OpenVZ

Xen

4. What is the usual way to gain command line access to computing instances in an IaaS cloud?

By providing a public SSH key to the cloud management system and using the matching private SSH key to log into the instances.

Usually computing instances are accessed through a web frontend and do not allow command line access.

By either telnet or SSH using the credentials of the cloud management system account with administrative privileges.

By using a telnet session with the credentials set and publicized by the creator of the computing instance's system image.

By using a VNC console which does not require authentication when it is invoked via the cloud management system.

5. Which of the following commands boots a KVM virtual machine using Debian GNU/Linux?

qemu -create -drive file=debian.img -cdrom debian.iso -m 1024 -boot d

qemu-kvm -drive file=debian.img -cdrom debian.iso -m 1024 -boot d

kvm -create -drive file=debian.img -cdrom debian.iso -m 1024 -boot d

kvm -qemu -drive file=debian.img -cdrom debian.iso -m 1024 -boot d

6. Which one of the following tools can NOT be used to create virtual machines, including their configuration in a libvirt-based KVM environment?

virt-clone

virt-install

virt-img

virt-manager

7. Which of the following KVM monitor commands changes the image file in the first IDE CDROM drive of a virtual machine?

change ide1-cd0 /tmp/linux.iso

update ide1-cd0 /tmp/linux.iso

set ide1-cd0=/tmp/linux.iso

eject --reconnect ide1-cd0 /tmp/linux.iso

disc file=/tmp/linux.iso,device=/dev/sr0

8. Which of the following statements are true regarding hardware based virtualization? (Choose TWO correct answers.)

Hardware based virtualization requires special support in the host system's hardware which is present in all recent x86-based computers.

Hardware based virtualization implements a whole machine in software and therefore can run virtual machines of a given hardware platform on an arbitrary host system.

Hardware based virtualization relies on the host system's processor to call the hypervisor when critical instructions are executed by a virtual machine.

Hardware based virtualization is not available on x86-based CPU architectures and requires special virtualization host hardware.

9. Which statement is true regarding the Linux kernel module that must be loaded in order to use KVM?

It must be loaded into the kernel of each virtual machine to provide paravirtualization which is required by KV

It must be loaded into the kernel of the host system in order to use the virtualization extensions of the host system's CP

It must be loaded into the kernel of the host system only if the console of a virtual machine will be connected to a physical console of the host system.

It must be loaded into the kernel of each virtual machine that will access files and directories from the host system's file system.

It must be loaded into the kernel of the first virtual machine as it interacts with the KVM bare metal hypervisor and is required to trigger the start of additional virtual machines.

10. After the Xen guest configuration file debian.cfg has been created and successfully tested, which additional action must be performed in order to make this Xen guest start automatically every time the host system boots?

It is necessary to add xendomains_auto = yes to the virtual machine configuration file.

It is necessary to add an entry for debian.cfg to the file /etc/xen/guesttab.

It is necessary to run the command xl autostart debian.cfg.

It is necessary to add a symbolic link to the configuration file in the /etc/xen/auto/ directory.

It is not possible to use Xen and its tools to start virtual machines automatically.

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11. What action does the virsh restore command perform?

It restores a virtual machine that was stopped by a kernel panic.

It restores a virtual machine from a state file.

It reverts a virtual machine, including its storage devices, to a previously saved state.

It wakes up a virtual machine that was hibernated by the operating system running inside the virtual machine.

12. Which of the following statements are true regarding IaaS computing instances? (Choose TWO correct answers.)

Creation of new instances can be automated by using scripts or APIs and service interfaces.

The root file system of a computing instance is always persistent and can be accessed after the instance is destroyed.

Each and every user of an IaaS cloud has exactly one computing instance.

Once created, computing instances are seldom deleted in order to ensure the accessibility of the instance's data.

Instances may be created when needed and destroyed when they become obsolete.

13. Which of the following statements are true regarding emulation? (Choose TWO correct answers.)

Emulation can only provide distinct hardware components but no complete virtual machines.

Emulation requires changes to the guest operating system.

Emulation reimplements a whole computing system in software.

Emulation allows operating systems to be run on foreign architectures.

Emulation is one of the most resource efficient virtualization techniques.

14. Which of the following data should be copied to the virtual machine when migrating a physical machine to a virtual machine?

The block device buffers

The CPU flags

The file systems or their content

The CPU register's content

The memory

15. Which of the following commands can be used to determine whether the local machine is capable of running full virtualized Xen guests? (Choose TWO correct answers.)

dmesg |grep -i intel|grep -i vt; dmesg |grep -i amd|grep -i v

egrep '(vmx|svm)' /proc/cpuinfo

xl dmesg | grep -i hvm

grep -i "Full Virtualization" /proc/xen

grep -i "Full Virtualization" /etc/xen/*

16. CORRECT TEXT.

What is the name of the kernel module that is required to be loaded in order to use KVM on an Intel CPU architecture? (Specify ONLY the module name without any path information and with or without the module suffix.)

kvm-intel.ko, kvm-intel, kvm_intel.ko, kvm_intel

17. CORRECT TEXT.

Which virsh subcommand is used to change the CD-ROM image file attached to a virtual machine? (Specify ONLY the subcommand without any parameters.)

change-media, virsh change-media, qemu-monitor-command, virsh qemumonitor-command

18. Which of the following commands lists the snapshots existing in the disk image vm1.img?

qemu-info snapshots vm1.img

qemu-img snapshot -l vm1.img

qemu -hda snapshot -l vm1.img -noboot -list snapshots

qemu-snapshots -l vm1.img

qemu-monitor -snapshots -hda vm1.img

19. What is the effect of running the virsh vcpupin CLUSNODE-2 4 2 command?

It sets the affinity of virtual CPU 4 of virtual machine CLUSNODE-2 to physical processor 2.

It reduces the number of virtual CPUs in CLUSNODE-2 from 4 to 2.

It increases the number of virtual CPUs in CLUSNODE-2 from 2 to 4.

It sets the affinity for all virtual CPUs of virtual machine CLUSNODE-2 to the physical processors 2 and 4.

20. Which CPU flag indicates the hardware virtualization capability on an AMD CPU?

SVM

VIRT

VMX

PVM

HVM

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21. Which of the following KVM parameters is identical to the KVM parameter -hdb file.img?

-drive bus=ide1,type=slave,image=file.img

-drive image=file.img,if=ide,device=hdb

-drive bus=hd,busid=b,src=file.img

-drive file=file.img,index=1,media=disk,if=ide

-drive type=loop,src=file.img,dst=disk:hdb

22. CORRECT TEXT.

Which command was used in Xen 3.x as a predecessor of the xl command? (Specify ONLY the command without any path or parameters.)

23. CORRECT TEXT.

Which sub-command of xl changes the media inside a virtual CD-ROM drive of a Xen guest domain? (Specify ONLY the sub-command without any path or parameters.)

block-attach, xl cd-insert, cd-eject, xl cd-eject, cd-insert, xl block-attach, block-detach, xl block-detach

24. Which of the following tasks is performed by Vagrant?

It migrates virtual machines automatically between host systemsto distribute the load of all virtual machines equally to all hosts involved.

It automates the installation of a virtual machine according to a configuration file describing the desired V

It monitors the functionality of a virtual machine and restarts the VM in case of failure.

It is a hypervisor optimized for the usage in embedded systems based on the ARM CPU architecture.

It is a programming interface used to create reports from collected performance and resource usage data of a libvirt-based virtualization infrastructure.

25. Which of the following componentsare partsof XAPI? (Choose TWO correct answers.)

The XADB configuration management database.

The XAPI virtual file system available at /xen.

The xm command.

The xe command.

The xapi daemon.

26. A configuration file for a Xen virtual machine was created with file name slack.cfg withinXen's configuration directory.Which of the following commands starts the virtual machine defined in this configuration file and opens the virtual machine's console on the current command line?

xl start slack

xl create slack.cfg --show-console

xl create slack.cfg

xl start slack.cfg -c

xl create slack.cfgCc

27. What does IaaS stand for?

Integration as a Service

Intelligence as a Service

Instances as a Service

Infrastructure as a Service

Information as a Service

28. How can data be shared between several virtual machines running on the same Linuxbased host system?

By mounting other VM's file systems from /dev/virt-disks/remote/.

By using a network file system or file transfer protocol.

By default, Linux-based virtualization products provide full access to the host system to all virtual machines.

By setting up a ramdisk in one virtual machine and mounting it using its UUID in the other VMs.

By attaching the same virtual hard disk to all virtual machines and activating EXT4 sharing extensions on it.

29. When used with KVM, which of the following block device image formats support snapshots?

qcow

dmg

qed

qcow2

raw

30. Which of the following restrictions is true when using KVM with the User Network?

Virtual Machines must use a SOCKS proxy to connect to the internet.

Virtual Machines can communicate with the host system and with other virtual machines using User Network.

Virtual Machines can only communicate with other virtual machines but not with the host system.

Virtual Machinescannotuse ICM

Virtual Machines are restricted to only use IPv6 and not IPv4.

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31. CORRECT TEXT.

Which command is used to perform all central management and configuration operations regarding OpenVZ containers? (Specify ONLY the command without any path or parameters.)

vzctl, virsh

32. Which of the following is true regarding the CPU of a KVM virtual machine? (Choose TWO correct answers.)

Each KVM virtual machine can only have one CPU with one core.

KVM virtual machines support multiple virtual CPUs in order to run SMP systems.

The CPU architecture of a KVM virtual machine is independent of the host system's architecture.

For each KVM virtual machine one dedicated physical CPU core must be reserved.

KVM uses the concept of virtual CPUs to map the virtual machines to physical CPUs.

33. Which of the following statements describes the concept behind paravirtualization?

Guest operating systems are modified to actively cooperate with the hypervisor in order to ease virtualization costs and gain better performance.

Instead of running full virtual machines, containers are used to separate distinct parts of one commonly shared operating system that appear as a virtual machine.

To avoid the need for virtualization, special security measures are taken to allow different applications to coexist on one physical machine.

Each operating system is trusted to use only those resources assigned to it, thereby eliminating the need of an additional virtualization layer.

34. CORRECT TEXT.

In order to determine if a virtualization host offers Intel VT-x support, which CPU flag must be searched for in the file /proc/cpuinfo? (Specify the name of the CPU flag as it is mentioned in the given file only without any additional information.)

vmx, VMX

35. In order to use the option dom0_mem to limit the amount of memory assigned to the Xen Domain-0, where must this option be specified?

In its Makefile, when Xen is built.

In the configuration file /etc/xen/Domain-0.cfg, when Xen starts.

In the bootloader configuration, when Xen is booted.

In its .config file, when the Domain-0 kernel is built.

In any of Xen's global configuration files.

36. Which of the following technologies is the most important component of IaaS clouds?

Database replication

DNS delegation

Emulation

Mandatory Access Control

Virtualization

37. Which of the following statements are true regarding resource management for full virtualization? (Choose TWO correct answers.)

The hypervisor may provide fine-grained limits to internal elements of the guest operating system such as the number of processes.

Full virtualization cannot pose any limits to virtual machines and always assigns the host system's resources in a first-come-first-serve manner.

It is up to the virtual machine to use its assigned hardware resources and create, for example, an arbitrary amount of network sockets.

The hypervisor provides each virtual machine with hardware of a defined capacity that limits the resources of the virtual machine.

All processes created within the virtual machines are transparently and equally scheduled in the host system for CPU and I/O usage.

38. Which of the following statements are true about container-based virtualization? (Choose TWO correct answers.)

All containers run within the operating system kernel of the host system.

Different containers may use different distributions of the same operating system.

Each container runs its own operating system kernel.

Container-based virtualization relies on hardware support from the host systems CP

Linux does not support container-based virtualization because of missing kernel APIs.

39. When preparing a public machine image for the provisioning of new cloud computing instances, which of the following steps should be done? (Choose TWO correct answers.)

Remove all default users and groups, including root and nobody.

Remove all configuration files from /etc/ that were not manually modified.

Remove all confidential data from the image.

Remove all remote login services (i.e. SSH) from the image.

Remove all private SSH keys from the image.

40. Which of the following circumstances prevent the usage of container based virtualization? (Choose TWO correct answers.)

More than one container requires access to block devices available in the host system.

Remote access via SSH is required to all containers.

Each container needs to have its own user accounts and user groups.

Administrators of containers must be able to install customized Linux kernels.

Different operating systems are to be used within containers on the same virtualization host.

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41. Which of the following statements is true regarding VirtualBox?

VirtualBox uses container-based virtualization and can only run virtual machines using the operating system of the host system.

VirtualBox can only be run from a graphical desktop environment and not from the text console.

VirtualBox provides special device drivers for several operating systems to enhance the virtual machine's performance.

VirtualBox contains a hypervisor that runs independently from any other operating system on a bare metal host.

VirtualBox is part of the vanilla Linux kernel and does not require any additional software installation on recent Linux distributions.

42. Which of the following commands are needed to establish a private network between two (or more) KVM virtual machines that is not visible to other KVM instances on the same KVM host? (Choose THREE correct answers.)

ifconfig

brctl

tunctl

ipconfig

ebtables

43. Which of the following statements are true for full virtualization? (Choose TWO correct answers.)

Full virtualization does not require changes to the guest operating systems.

Full virtualization has no performance impact compared to a non-virtualized bare-metal installation on the same machine.

Full virtualization has a severe performance impact and should not be used in production environments.

Full virtualization may be supported by special CPU extensions that provide better performance.

Full virtualization always requires additional software components and cannot be done using Linux only.

44. CORRECT TEXT.

Which command in the KVM monitor ejects the first IDE CDROM drive? (Specify the KVM monitor command INCLUDING ALL REQUIRED PARAMETERS.)

eject ide1-cd0, eject -f ide1-cd0

45. How can data in a computing instance in an IaaS cloud be permanently saved and accessed even after the recreation of the computing instance? (Choose TWO correct answers.)

By saving the data to the memory of the computing instance using tmpfs.

By saving the data anywhere in the computing instance's file system.

By saving the data to /cloud/persistent/ which is provided in all common IaaS clouds.

By saving the data to object stores provided by a separate service in the cloud.

By saving the data on persistent block devices that must be explicitly connected to the computing instance.

46. Which of the following are valid KVM parameters? (Choose THREE correct answers.)

-drive file=iscsi://user%password@fileserver/iqn.2001-04.com.example/1

-drive file=rsync://user%password@fileserver:/tmp/file.iso,media=cdrom,readonly

-drive file=ssh://user@host/tmp/file.img

-drive file=imap://user:password@mailserver:/INBOX/Wufnc6MjYp@mailgate

-drive file=http://user:password@fileserver/pub/linux.iso,media=cdrom,readonly

47. Which command within virsh lists the virtual machines that are available on the current host?

view

show

list-vm

list

list-all

48. Which options to the xl command will deactivate a running Xen virtual machine? (Choose TWO correct answers.)

destroy

remove

shutdown

stop

halt

49. Which of the following circumstances prevent the usage of container based virtualization? (Choose TWO

correct answers.)

More than one container requires access to block devices available in the host system.

Remote access via SSH is required to all containers.

Each container needs to have its own user accounts and user groups.

Administrators of containers must be able to install customized Linux kernels.

Different operating systems are to be used within containers on the same virtualization host.

50. When migrating a physical machine to a full virtualized machine, which of the following properties should be expected to change from the perspective of the guest operating system? (Choose TWO correct answers.)

The user accounts within the guest operating system.

The properties of the CPU and other hardware devices.

The MAC address of the network interfaces.

The version of the guest operating system.

The software and applications installed on the guest system.

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51. Which of the following statements are true regarding IaaS computing instances? (Choose TWO correct answers.)

Creation of new instances can be automated by using scripts or APIs and service interfaces.

The root file system of a computing instance is always persistent and can be accessed after the instance is destroyed.

Each and every user of an IaaS cloud has exactly one computing instance.

Once created, computing instances are seldom deleted in order to ensure the accessibility of the instance's data.

Instances may be created when needed and destroyed when they become obsolete.

52. Which of the following technologies is the most important component of IaaS clouds?

Database replication

DNS delegation

Emulation

Mandatory Access Control

Virtualization

53. Which of the following statements are true regarding Xen domains? (Choose TWO correct answers.)

Fully virtualized and paravirtualized domains are managed using the same tools and commands.

Xen domains of all types require virtualization extensions in the host system's CP

All fully virtualized domains are called 'Dom0' while all paravirtualized domains are called 'DomU'.

Both paravirtualized and fully virtualized domains may run on the same host system.

Paravirtualized domains are significantly slower than fully virtualized domains.

54. Which of the following directives is used in the configuration file of a Xen guest domain in order to define network interfaces?

vif

eth

vnet

vbr

net

55. Fill in the blank.

Which value must be set in the option builder in the configuration file of a Xen guest domain in order to create a fully virtualized machine instead of a paravirtualized one? (Specify ONLY the value without any option name, quotes or operators.)

56. Fill in the blank.

Which sub-command of xl changes the media inside a virtual CD-ROM drive of a Xen guest domain? (Specify ONLY the sub-command without any path or parameters.)

57. Which of the following components are parts of XAPI? (Choose TWO correct answers.)

The XADB configuration management database.

The XAPI virtual file system available at /xen.

The xm command.

The xe command.

The xapi daemon.

58. Which of the following tools is used to interact with XenStore?

xenstore-ls

xendo

xl store

xstore

59. Which of the following KVM parameters is identical to the KVM parameter -hdb file.img?

-drive bus=ide1,type=slave,image=file.img

-drive image=file.img,if=ide,device=hdb

-drive bus=hd,busid=b,src=file.img

-drive file=file.img,index=1,media=disk,if=ide

-drive type=loop,src=file.img,dst=disk:hdb

60. Fill in the blank.

Which command in the KVM monitor ejects the first IDE CDROM drive? (Specify the KVM monitor command INCLUDING ALL REQUIRED PARAMETERS.)

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61. When KVM is launched with the parameter -boot order=n, which of the following devices will be searched for a bootable operating system?

All floppy, CDROM, and hard disk drives in that order.

No devices are searched and the user is prompted to choose the boot device.

All network interfaces attached to the V

All hard disks and no other devices.

No devices are searched in order to support directly booting a Linux kernel.

62. When used with KVM, which of the following block device image formats support snapshots?

qcow

dmg

qed

qcow2

raw

63. Within the graphical output of a KVM virtual machine, which key sequence switches to the KVM monitor of the VM?

Ctrl-Alt-1

Ctrl-Alt-0

Ctrl-Alt-4

Ctrl-Alt-2

Ctrl-Alt-3

64. Fill in the blank.

Which command is used to perform all central management and configuration operations regarding

OpenVZ containers? (Specify ONLY the command without any path or parameters.)

65. Which of the following tasks is performed by Vagrant?

It migrates virtual machines automatically between host systems to distribute the load of all virtual machines equally to all hosts involved.

It automates the installation of a virtual machine according to a configuration file describing the desired V

It monitors the functionality of a virtual machine and restarts the VM in case of failure.

It is a hypervisor optimized for the usage in embedded systems based on the ARM CPU architecture.

It is a programming interface used to create reports from collected performance and resource usage data of a libvirt-based virtualization infrastructure.

66. What is libvirt?

An identity manager used to provide Single-Sign-On for different operating systems.

A driver package used to support 3D printers.

A cluster manager used to handle node access to shared storage.

A combined interface to several virtualization products.

A Linux-based virtualization hypervisor.

67. Which daemon applies the configuration and commands of libvirt to the virtualization components of the host system?

vmd

virtuald

libvirtmgr

libvirt-worker

libvirtd

68. Which of the following commands provides a detailed list of all image files contained in the libvirt storage pool vol1?

virsh list --volumes --pool vol1 --details

virsh vol-details vol1

virsh --show-pool vol1 --details

virsh vol-list vol1 --details

virsh volumes --source vol1 Cdetails

69. Fill in the blank.

Which subcommand of virsh opens the XML configuration of a virtual network in an editor in order to make changes to that configuration? (Specify ONLY the subcommand without any parameters.)

70. When preparing a public machine image for the provisioning of new cloud computing instances, which of the following steps should be done? (Choose TWO correct answers.)

Remove all default users and groups, including root and nobody.

Remove all configuration files from /etc/ that were not manually modified.

Remove all confidential data from the image.

Remove all remote login services (i.e. SSH) from the image.

Remove all private SSH keys from the image.

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71. What is the usual way to gain command line access to computing instances in an IaaS cloud?

By providing a public SSH key to the cloud management system and using the matching private SSH key to log into the instances.

Usually computing instances are accessed through a web frontend and do not allow command line access.

By either telnet or SSH using the credentials of the cloud management system account with administrative privileges.

By using a telnet session with the credentials set and publicized by the creator of the computing instance's system image.

By using a VNC console which does not require authentication when it is invoked via the cloud management system.

72. Which CPU flag indicates the hardware virtualization capability on an AMD CPU?

SVM

VIRT

VMX

PVM

HVM

73. Which of the following tasks are parts of a hypervisor's responsibility? (Choose TWO correct answers.)

Create filesystems during the installation of new VM guest operating systems.

Provide host-wide unique PIDs to the processes running inside the VMs in order to ease interprocess communication between virtual machines.

Map the resources of virtual machines to the resources of the host system.

Ensure isolation and eliminate any interference between virtual machines.

Manage authentication to network services running inside a virtual machine.

74. Which of the following statements are true for full virtualization? (Choose TWO correct answers.)

Full virtualization does not require changes to the guest operating systems.

Full virtualization has no performance impact compared to a non-virtualized bare-metal installation on the same machine.

Full virtualization has a severe performance impact and should not be used in production environments.

Full virtualization may be supported by special CPU extensions that provide better performance.

Full virtualization always requires additional software components and cannot be done using Linux only.

75. Which of the following statements are true regarding hardware based virtualization? (Choose TWO correct answers.)

Hardware based virtualization requires special support in the host system's hardware which is present in all recent x86-based computers.

Hardware based virtualization implements a whole machine in software and therefore can run virtual machines of a given hardware platform on an arbitrary host system.

Hardware based virtualization relies on the host system's processor to call the hypervisor when critical instructions are executed by a virtual machine.

Hardware based virtualization is not available on x86-based CPU architectures and requires special virtualization host hardware.

76. Fill in the blank.

What is the name of the global configuration file for the xl tool stack? (Specify the file name only without any path.)

77. After the Xen guest configuration file debian.cfg has been created and successfully tested, which

additional action must be performed in order to make this Xen guest start automatically every time the host system boots?

It is necessary to add xendomains_auto = yes to the virtual machine configuration file.

It is necessary to add an entry for debian.cfg to the file /etc/xen/guesttab.

It is necessary to run the command xl autostart debian.cfg.

It is necessary to add a symbolic link to the configuration file in the /etc/xen/auto/ directory.

It is not possible to use Xen and its tools to start virtual machines automatically.

78. Which options to the xl command will deactivate a running Xen virtual machine? (Choose TWO correct answers.)

destroy

remove

shutdown

stop

halt

79. Fill in the blank.

What is the name of the kernel module that is required to be loaded in order to use KVM on an Intel CPU architecture? (Specify ONLY the module name without any path information and with or without the module suffix.)

80. Which of the following is true regarding the CPU of a KVM virtual machine? (Choose TWO correct answers.)

Each KVM virtual machine can only have one CPU with one core.

KVM virtual machines support multiple virtual CPUs in order to run SMP systems.

The CPU architecture of a KVM virtual machine is independent of the host system's architecture.

For each KVM virtual machine one dedicated physical CPU core must be reserved.

KVM uses the concept of virtual CPUs to map the virtual machines to physical CPUs.

Page 9 of 10

81. Which statement is true regarding the Linux kernel module that must be loaded in order to use KVM?

It must be loaded into the kernel of each virtual machine to provide paravirtualization which is required by KV

It must be loaded into the kernel of the host system in order to use the virtualization extensions of the host system's CP

It must be loaded into the kernel of the host system only if the console of a virtual machine will be connected to a physical console of the host system.

It must be loaded into the kernel of each virtual machine that will access files and directories from the host system's file system.

It must be loaded into the kernel of the first virtual machine as it interacts with the KVM bare metal hypervisor and is required to trigger the start of additional virtual machines.

82. Which of the following commands boots a KVM virtual machine using Debian GNU/Linux?

qemu -create -drive file=debian.img -cdrom debian.iso -m 1024 -boot d

qemu-kvm -drive file=debian.img -cdrom debian.iso -m 1024 -boot d

kvm -create -drive file=debian.img -cdrom debian.iso -m 1024 -boot d

kvm -qemu -drive file=debian.img -cdrom debian.iso -m 1024 -boot d

83. Which of the following products use container-based virtualization? (Choose THREE correct answers.)

KVM

Linux VServer

LXC

OpenVZ

Xen

84. What action does the virsh restore command perform?

It restores a virtual machine that was stopped by a kernel panic.

It restores a virtual machine from a state file.

It reverts a virtual machine, including its storage devices, to a previously saved state.

It wakes up a virtual machine that was hibernated by the operating system running inside the virtual machine.

85. How can data be shared between several virtual machines running on the same Linux-based host system?

By mounting other VM's file systems from /dev/virt-disks/remote/.

By using a network file system or file transfer protocol.

By default, Linux-based virtualization products provide full access to the host system to all virtual machines.

By setting up a ramdisk in one virtual machine and mounting it using its UUID in the other VMs.

By attaching the same virtual hard disk to all virtual machines and activating EXT4 sharing extensions on it.

86. Which of the following data should be copied to the virtual machine when migrating a physical machine to a virtual machine?

The block device buffers

The CPU flags

The file systems or their content

The CPU register's content

The memory

87. What does IaaS stand for?

Integration as a Service

Intelligence as a Service

Instances as a Service

Infrastructure as a Service

Information as a Service

88. Which of the following types of guest systems does Xen support? (Choose TWO correct answers.)

Paravirtualized guests (PV)

Foreign architecture guests (FA)

Fully virtualized guests (HVM)

Container virtualized guests (CVM)

Emulated guests (EMU)

89. Fill in the blank.

Which sub-command of xl lists the block devices that are currently attached to a Xen guest domain? (Specify ONLY the sub-command without any path or parameters.)

90. What is XAPI?

An extension of libvirt which adds live migration of virtual servers between arbitrary hypervisors.

A ReSTful API which is used by xl to communicate with the Xen hypervisor.

The communication interface between a paravirtualized Linux Kernel and the Xen hypervisor.

A high level tool chain which provides advanced management tools and interfaces for Xen.

The internal messaging system within the Xen hypervisor.

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91. In order to use the option dom0_mem to limit the amount of memory assigned to the Xen Domain-0, where must this option be specified?

In its Makefile, when Xen is built.

In the configuration file /etc/xen/Domain-0.cfg, when Xen starts.

In the bootloader configuration, when Xen is booted.

In its .config file, when the Domain-0 kernel is built.

In any of Xen's global configuration files.

92. Fill in the blank.

Which command was used in Xen 3.x as a predecessor of the xl command? (Specify ONLY the command without any path or parameters.)

93. Which of the following KVM monitor commands changes the image file in the first IDE CDROM drive of a virtual machine?

change ide1-cd0 /tmp/linux.iso

update ide1-cd0 /tmp/linux.iso

set ide1-cd0=/tmp/linux.iso

eject --reconnect ide1-cd0 /tmp/linux.iso

disc file=/tmp/linux.iso,device=/dev/sr0

94. Which of the following are valid KVM parameters? (Choose THREE correct answers.)

-drive file=iscsi://user%password@fileserver/iqn.2001-04.com.example/1

-drive file=rsync://user%password@fileserver:/tmp/file.iso,media=cdrom,readonly

-drive file=ssh://user@host/tmp/file.img

-drive file=imap://user:password@mailserver:/INBOX/Wufnc6MjYp@mailgate

-drive file=http://user:password@fileserver/pub/linux.iso,media=cdrom,readonly

95. Fill in the blank.

When using direct Linux booting to start Linux within a KVM virtual machine, which KVM parameter is used to specify parameters for the Linux Kernel? (Specify ONLY the option name without any values or parameters.)

96. Which of the following commands lists the snapshots existing in the disk image vm1.img?

qemu-info snapshots vm1.img

qemu-img snapshot -l vm1.img

qemu -hda snapshot -l vm1.img -noboot -list snapshots

qemu-snapshots -l vm1.img

qemu-monitor -snapshots -hda vm1.img

97. Fill in the blank.

Which command in the KVM monitor restores a snapshot? (Specify ONLY the command without any path or parameters.)

98. Fill in the blank. In the command

vzctl 105 /usr/bin/apt-get install wget

which subcommand of vzctl is missing in order to install wget in the OpenVZ container 105?

99. Which of the following statements are true regarding VirtualBox?

It supports only Linux as a guest operating system.

It is available for Linux only.

It provides both a graphical user interface and command line tools to administer virtual machines.

It requires dedicated shared storage as it cannot store virtual machine disk images locally on block devices of the virtualization host.

It is a special kernel booted before the first regular operating system.

100. Which of the following statements is true regarding networking with libvirt?

Libvirt's network functionality is limited to connecting virtual machines to a physical network interface of the host system.

Libvirt networks appear, by default, as standard Linux bridges in the host system.

Libvirt assigns the same MAC address to all virtual machines and isolates their network interfaces at the link layer.

Libvirt requires a dedicated network interface that may not be used by the host system.

Libvirt supports exactly one virtual network and connects all virtual machines to it.