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

A clone resource for the OCFS2 file system.

A shared storage device accessible by all nodes using the OCFS2 filesystem.

The distributed lock manager (DLM).

The cluster logical volume manager (CLVM).

The O2CB service.

ocfs2.setprops

ocfs2tool

crm_edit

tunefs.ocfs2

o2cbtool

OCFS2 is an integral part of Pacemaker and relies on Pacemaker services for functionality.

To avoid the need for shared storage, OCFS2 can replicate the content of its filesystems via the network.

When using OCFS2 with additional cluster software, OCFS2 must be integrated into the overall cluster manager to ensure consistent cluster behaviour.

OCFS2 can be used without any additional software as it contains its own cluster manager, O2CB.

In addition to filesystems, OCFS2 can handle other cluster services such as IP addresses and server daemons.

user

dlm

heartbeat

kernel

A LVM logical volume

A physical hard disk

A rewritable CD

A virtual tape library

A tape streamer

Each GFS2 filesystem has exactly one journal.

Once a GFS2 filesystem is created, the number of journals cannot be changed.

Every node that simultaneously mounts the filesystem requires its own GFS2 journal.

Journals were heavily used in GFS and are deprecated and optional in GFS2.

The GFS Cluster Journal Daemon, GCJD, handles the journaling in a GFS2 cluster.

It supports only Linux as a guest operating system.

It is available for Linux only.

It provides both a graphical user interface and command line tools to administer virtual machines.

It requires dedicated shared storage as it cannot store virtual machine disk images locally on block devices of the virtualization host.

It is a special kernel booted before the first regular operating system.

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

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

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

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

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

Paravirtualized guests (PV)

Foreign architecture guests (FA)

Fully virtualized guests (HVM)

Container virtualized guests (CVM)

Emulated guests (EMU)

It sets the affinity of virtual CPU 4 of virtual machine CLUSNODE-2 to physical processor 2.

It reduces the number of virtual CPUs in CLUSNODE-2 from 4 to 2.

It increases the number of virtual CPUs in CLUSNODE-2 from 2 to 4.

It sets the affinity for all virtual CPUs of virtual machine CLUSNODE-2 to the physical processors 2 and 4.

Each nanny process checks the state of one configured service on one real server, and tells LVS if the service on that real server is malfunctioning.

The nanny process powers off a nonfunctional backend server.

The nanny process restarts the daemon of a failed service on a real server node.

The nanny process changes the IP routing table in the Linux kernel according to the LVS configuration.

Heartbeat

OpenAIS

DRBD

SCMP

Slurm

ccmd

crmd

fencer

pengine

keepalived

keepalived

ldirectord

lvproxy

roundrobind

vserverd

The load balancer of a load balanced cluster fails.

The communication between the cluster nodes is interrupted.

Cluster services are moved between cluster nodes.

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

A cluster node has successfully been fenced.

Clusters with one or two nodes cannot have a quorum and require no quorum configuration.

In a two node cluster, quorum can be determined and handled just as in a cluster with a higher number of nodes.

In a two node cluster the quorum is always held by the node that first started the cluster software.

The default quorum policy in a two node cluster must be set to ignore in order to configure a working cluster.