LPI 304-200 practice test

LPIC-3 Exam 304: Virtualization & High Availability


Question 1

Which of the following commands can be used to change properties such as the number of node
slots or the label of an existing OCFS2 filesystem?

  • A. ocfs2.setprops
  • B. ocfs2tool
  • C. crm_edit
  • D. tunefs.ocfs2
  • E. o2cbtool
Answer:

D

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Question 2

Which O2CB mode should be used for OCFS2 integration with heartbeat?

  • A. user
  • B. dlm
  • C. heartbeat
  • D. kernel
Answer:

A

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Question 3

Which of the following statements are true regarding OCFS2? (Choose TWO correct answers.)

  • A. OCFS2 is an integral part of Pacemaker and relies on Pacemaker services for functionality.
  • B. To avoid the need for shared storage, OCFS2 can replicate the content of its filesystems via the network.
  • C. When using OCFS2 with additional cluster software, OCFS2 must be integrated into the overall cluster manager to ensure consistent cluster behaviour.
  • D. OCFS2 can be used without any additional software as it contains its own cluster manager, O2CB.
  • E. In addition to filesystems, OCFS2 can handle other cluster services such as IP addresses and server daemons.
Answer:

C, D

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Question 4

Which kernel module must be loaded to initiate a RAID-1 like copy of data on two separate storage
devices for a clustered storage solution?

  • A. rsyncd
  • B. drbd
  • C. clraid
  • D. clmirror
Answer:

B

Discussions

Question 5

What is the task of the Cluster Logical Volume Manager, CLVM?

  • A. It segments the cluster nodes into several logical groups that are always fenced together.
  • B. It balances incoming TCP connections to a logical service to several backend nodes.
  • C. It makes logical volumes on shared storage available to all cluster nodes.
  • D. It allows several nodes to share file system locks in order to access the same files simultaneously.
Answer:

C

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Question 6

How can the state of the backing storage disks of a DRBD device be checked? (Choose TWO correct
answers.)

  • A. cat /proc/drdb/status
  • B. cat /proc/drdb
  • C. drbdadm dstate all
  • D. drbdadm diskstatus all
  • E. drbdadm state --disk all
Answer:

B, C

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Question 7

What is the name and path of the configuration file for the O2CB cluster that coordinates the nodes
using OCFS2 filesystems?

  • A. /etc/ocfs2/cluster.conf
  • B. /etc/ocfs/cluster.conf
  • C. /etc/ocfs2.conf
  • D. /etc/cluster.conf
Answer:

A

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Question 8

Which one of the following is NOT a required component for running an OCFS2 filesystem resource in
a Pacemaker cluster?

  • A. A clone resource for the OCFS2 file system.
  • B. A shared storage device accessible by all nodes using the OCFS2 filesystem.
  • C. The distributed lock manager (DLM).
  • D. The cluster logical volume manager (CLVM).
  • E. The O2CB service.
Answer:

D

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Question 9

Which of the following statements is true regarding journals of a GFS2 filesystem?

  • A. Each GFS2 filesystem has exactly one journal.
  • B. Once a GFS2 filesystem is created, the number of journals cannot be changed.
  • C. Every node that simultaneously mounts the filesystem requires its own GFS2 journal.
  • D. Journals were heavily used in GFS and are deprecated and optional in GFS2.
  • E. The GFS Cluster Journal Daemon, GCJD, handles the journaling in a GFS2 cluster.
Answer:

C

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Question 10

Which of the following can be used as a low level device for DRBD? (Choose TWO correct answers.)

  • A. A LVM logical volume
  • B. A physical hard disk
  • C. A rewritable CD
  • D. A virtual tape library
  • E. A tape streamer
Answer:

A, B

Discussions
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