Lpi LPIC-3 304-150 Questions & Answers

• Question 31:

  Which memory management subsystem does KVM use?

  A. QEMM

  B. Xen's memory management module

  C. KVMMM

  D. The default memory management of the Host OS kernel

  Correct Answer: D

• Question 32:

  A configuration file for a Xen virtual machine was created in the directory /etc/xen with filename slack.cfg. What is the command to start the virtual machine defined in this configuration file including displaying its console on screen?

  A. xm start slack

  B. xm create slack.cfg showconsole

  C. xm create slack.cfg

  D. xm start slack.cfg c

  E. xm create slack.cfg c

  Correct Answer: E

• Question 33:

  What is the effect of running the virsh setvcpus CLUSNODE1 2 command?

  A. It adds 2 virtual CPUs to the virtual machine CLUSNODE1.

  B. It sets virtual machine CLUSNODE1 to have 2 virtual CPUs.

  C. It sets all virtual CPUs of virtual machine CLUSNODE1 to physical processor 2.

  D. It restricts the virtual machine CLUSNODE1 to using, at most, 2 physical processors.

  Correct Answer: B

• Question 34:

  Which of the following statements are TRUE regarding KVM virtualization? (Select THREE correct answers)

  A. Qemu is needed to create virtual machines on top of the KVM kernel module.

  B. There is no support for Windows virtual machines.

  C. The /proc/cpuinfo file can be checked to determine if the CPU is able to handle the KVM virtual machines.

  D. For paravirtualized virtual machines, there is no special CPU support required.

  E. Any tool that works with libvirt can be used to manage the KVM environment.

  Correct Answer: ACE

• Question 35:

  What is the correct configuration stanza for a Xen virtual machine?

  A. kernel "/boot/vmlinuz2.6.18.8xwnU"; ramdisk "/boot/initrd.img2.6.18.8xwnU"; memory "256"; name"Centos"; disk['phy:/dev/sdb1,xvda1,w']; root"/dev/xvda1";

  B. kernel "/boot/vmlinuz2.6.18.8xwnU" ramdisk "/boot/initrd.img2.6.18.8xwnU" memory "256" name"Centos" disk['phy:/dev/sdb1,xvda1,w'] root"/dev/xvda1"

  C. kernel = "/boot/vmlinuz2.6.18.8xwnU" ramdisk = "/boot/initrd.img2.6.18.8xwnU" memory = "256" name= "Centos" disk= ['phy:/dev/sdb1,xvda1,w'] root= "/dev/xvda1"

  D. kernel ['/boot/vmlinuz2.6.18.8xwnU'] ramdisk ['/boot/initrd.img2.6.18.8xwnU'] memory ['256'] name['Centos'] disk['phy:/dev/sdb1,xvda1,w'] root['/dev/xvda1']

  Correct Answer: C

• Question 36:

  Which one of the following options represent a valid declaration of a backend server with HAProxy?

  A. host server_x 10.1.0.1:80 cookie server_x

  B. backend server_x 10.1.0.1:80

  C. server server_x 10.1.0.1:80 check

  D. pool server_x 10.1.0.1:80

  Correct Answer: C

• Question 37:

  Xen was correctly installed, configured and initialized. Some virtual machines have been successfully started, and after that, the xend daemon has been stopped by issuing the command /etc/init.d/xend stop. In this scenario, what is the impact of stopping the xend daemon?

  A. Virtual machines will not start automatically on the next boot.

  B. All of the running virtual machines will be turned off.

  C. The xm command will stop working.

  D. The Domain0 will halt.

  E. The hypervisor will be stopped.

  Correct Answer: C

• Question 38:

  When using the user mode network stack with qemu, TCP and UDP connections work fine but ping does not work. Why is this?

  A. The Qemu user mode network stack does not implement ICMP.

  B. The problem is caused by incorrect routing.

  C. The Qemu user mode network stack blocks all ICMP traffic.

  D. The Qemu user mode network stack requires explicit permission for ping to work.

  Correct Answer: A

• Question 39:

  Which of the following tools could be used to create a OCFS2 cluster filesystem? (Select TWO correct answers)

  A. ocfs2_init

  B. o2cb_svc

  C. o2cb_ctl

  D. ocfs2console

  E. mkocfs2

  Correct Answer: CD

• Question 40:

  Which of the following statements are true when comparing full virtualization and paravirtualization in Xen? (Select THREE correct answers)

  A. Paravirtualization demands changes to operating systems designed to be installed directly on the hardware when using those operating systems as guests.

  B. It is possible to use, without changes, operating systems designed to be installed directly on the hardware when using it as guest in full virtualization.

  C. The number of virtual CPUs can be configured only in the full virtualization mode.

  D. Paravirtualization depends on special CPU features like IntelVT or AMDV.

  E. The virtual network resources are available for both types of virtualization.

  Correct Answer: ABE