Lpi LPI Certifications 304-200 Questions & Answers

• Question 61:

  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.)

  A. ifconfig

  B. brctl

  C. tunctl

  D. ipconfig

  E. ebtables

  Correct Answer: ABC

• Question 62:

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

  A. virt-clone

  B. virt-install

  C. virt-img

  D. virt-manager

  Correct Answer: C

• Question 63:

  Which of the following statements is true regarding VirtualBox?

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

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

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

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

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

  Correct Answer: C

• Question 64:

  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.)

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

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

  C. xl dmesg | grep -i hvm

  D. grep -i "Full Virtualization" /proc/xen

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

  Correct Answer: BC

• Question 65:

  Which of the following statements is true regarding XenStore?

  A. It is a web interface used to provide self-service domain provisioning to users with sufficient privileges.

  B. It saves the persistent configuration of all defined Xen domains and restores them when the host system is started.

  C. It manages disk file images on behalf of all virtual machines and provides them as virtual devices to guest domains.

  D. It stores run time information regarding Xen and its domains using hierarchical namespaces shared between domains.

  E. It is a software repository located within the host system used to provide software packages to the guest domains.

  Correct Answer: D

• Question 66:

  A configuration file for a Xen virtual machine was created with file name slack.cfg within Xen'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?

  A. xl start slack

  B. xl create slack.cfg --show-console

  C. xl create slack.cfg

  D. xl start slack.cfg -c

  E. xl create slack.cfg -c

  Correct Answer: E

• Question 67:

  Which of the following statements is true regarding the following output of xl list:

  Name ID Mem VCPUs State Time(s) Domain-0 0 384 1 r----- 498.7 Debian 2 305 1 --p--- 783.5 Slack 6 64 1 -b---- 313.6 CentOS 7 512 2 r----- 455.1

  A. It is necessary to use the xl command to change Slack's state to running.

  B. CentOS is the domain which has consumed the most CPU time.

  C. The domain with ID 2 uses paravirtualization.

  D. Both Debian and Slack require xl commands to start running.

  E. Slack is idle or waiting for I/O.

  Correct Answer: E

• Question 68:

  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.)

  A. vmx -or- VMX

  Correct Answer: A

• Question 69:

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

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

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

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

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

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

  Correct Answer: CD

• Question 70:

  Which of the following statements describes the concept behind paravirtualization?

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

  B. 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.

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

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

  Correct Answer: A