[Free] 2018(Jan) EnsurePass Testinsides LPI 304-200 Dumps with VCE and PDF 21-30

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LPI Level 3 Exam 304

Question No: 21 – (Topic 1)

Which of the following statements describes the concept behind paravirtualization?

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

  2. 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.

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

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

Answer: A

Question No: 22 – (Topic 1)

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

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

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

  3. Each container runs its own operating system kernel.

  4. Container-based virtualization relies on hardware support from the host systems CPU.

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

Answer: A,B

Question No: 23 CORRECT TEXT – (Topic 1)

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

Answer: /etc/xen/xl.conf, xl.conf

Question No: 24 – (Topic 1)

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.)

  1. ifconfig

  2. brctl

  3. tunctl

  4. ipconfig

  5. ebtables

Answer: A,B,C

Question No: 25 – (Topic 1)

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?

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

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

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

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

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

Answer: D

Question No: 26 – (Topic 1)

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

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

  2. Full virtualization cannot pose any limits to virtual machines and always assigns the host system#39;s resources in a first-come-first-serve manner.

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

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

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

Answer: C,D

Question No: 27 – (Topic 1)

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.)

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

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

  3. Remove all confidential data from the image.

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

  5. Remove all private SSH keys from the image.

Answer: C,E

Question No: 28 CORRECT TEXT – (Topic 1)

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.)

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

Question No: 29 – (Topic 1)

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

  1. vmd

  2. virtuald

  3. libvirtmgr

  4. libvirt-worker

  5. libvirtd

Answer: E

Question No: 30 CORRECT TEXT – (Topic 1)

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.)

Answer: kvm-intel.ko, kvm-intel, kvm_intel.ko, kvm_intel

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