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LPI 304-200 LPI Level 3 Exam 304 Exam Practice Test

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Total 120 questions

LPI Level 3 Exam 304 Questions and Answers

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Question 1

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

Options:

A.

user

B.

dlm

C.

heartbeat

D.

kernel

Question 2

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

Options:

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.

Question 3

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

Options:

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.

Question 4

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

Options:

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.

Question 5

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?

Options:

A.

rsyncd

B.

drbd

C.

clraid

D.

clmirror

Question 6

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

Options:

A.

cat /proc/drdb/status

B.

cat /proc/drdb

C.

drbdadm dstate all

D.

drbdadm diskstatus all

E.

drbdadm state --disk all

Question 7

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

Options:

A.

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

B.

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

C.

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

D.

Ensure isolation and eliminate any interference between virtual machines.

E.

Manage authentication to network services running inside a virtual machine.

Question 8

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.)

Options:

Question 9

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

Options:

A.

Paravirtualized guests (PV)

B.

Foreign architecture guests (FA)

C.

Fully virtualized guests (HVM)

D.

Container virtualized guests (CVM)

E.

Emulated guests (EMU)

Question 10

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

Options:

A.

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

B.

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

C.

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.

D.

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

E.

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.

Question 11

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

Options:

A.

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

B.

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

C.

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

D.

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

E.

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

Question 12

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.)

Options:

A.

ifconfig

B.

brctl

C.

tunctl

D.

ipconfig

E.

ebtables

Question 13

Which of the following statements are true regarding the handling of a hardware error in a high availability cluster? (Choose THREE correct answers.)

Options:

A.

High availability provides automatic recovery from software errors only and cannot mitigate hardware issues.

B.

After the cluster deals with an error, no manual actions are required to bring the cluster back to normal operation.

C.

Erroneous components are physically turned off as they are in an undefined state.

D.

Services are restarted on or redirected to other cluster nodes.

E.

The cluster management components monitor the health of all cluster components.

Question 14

In a Pacemaker cluster, which one of the following commands shows the right syntax for fencing the node on port 3 using the APC rack PDU device which can be found at IP address 192.168.1.145?

Options:

A.

apc_stonith -a 192.168.1.145 -l apc -n 3 -v -o shutdown -r now

B.

fence_apc -a 192.168.1.145 -l apc -p apc -n 3 -v -o shutdown -r now

C.

fence_apc -a 192.168.1.145 -l apc -p apc -n 3 -v -o reboot

D.

apc_stonith -a 192.168.1.145 -l apc -p apc -n 3 -v -o reboot

Question 15

Which of the following situations can result in a split brain situation in a high availability cluster?

Options:

A.

The load balancer of a load balanced cluster fails.

B.

The communication between the cluster nodes is interrupted.

C.

Cluster services are moved between cluster nodes.

D.

More than one node is active in a load balanced cluster.

E.

A cluster node has successfully been fenced.

Question 16

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

Options:

A.

Failover clusters are not operational without at least one dedicated load balancer.

B.

All response packages sent from a backend server to a client must pass through the load balancer.

C.

The load balancer is usually deployed on one of the backend servers.

D.

Load balancers may be able to analyze traffic.

E.

All incoming connections to the cluster services are received by the load balancer.

Question 17

How does high availability clustering relate to periodic storage backup? (Choose TWO correct answers.)

Options:

A.

Regular backups become generally unnecessary as any data loss or corruption is automatically recovered by the high availability cluster.

B.

Regular backups remain vital as they allow restoration of data that was accidentally deleted or corrupted.

C.

Regular backups may be reduced to the cluster configuration and cluster state data as this information is sufficient to recover any state of the cluster, including data, at any time.

D.

Backups should be located only on the local storage of the cluster and should not be backed up in order to prevent bandwidth congestion.

E.

Backup procedures may have to be adapted to the cluster to ensure complete and recoverable backups.

Question 18

In case one service in a Pacemaker cluster depends on another service running on the same node, which score should be assigned to the constraint describing that dependency?

Options:

A.

-1

B.

0

C.

1

D.

FORCE

E.

INFINITY

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Total 120 questions