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If you're serious about obtaining the LPIC-3 High Availability and Storage Clusters certification, practicing with Lpi 306-300 dumps questions is a must. By doing so, you'll become familiar with the exam format, identify knowledge gaps, develop time management skills, boost your confidence, and increase your chances of success. So, start practicing 306-300 exam dumps today and give yourself the best chance of passing the 306-300 exam! Test free LPIC-3: High Availability and Storage Clusters - Exam 306, version 3.0 306-300 exam dumps below.

Page 1 of 6

1. 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?

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

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

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

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

2. What is the purpose of configuring high availability aspects of GlusterFS?

To prevent unauthorized access to storage volumes.

To ensure continuous availability of storage services.

To optimize storage performance for specific workloads.

To enable replication of data across multiple storage nodes.

3. Which actions should be taken in a load balanced cluster in order to protect the load balancer against outages?

Load balancers cannot be protected against outages which is why they should always be built on dedicated hardware.

No actions are necessary as a load balancer cannot become a single point of failure.

Two or more load balancers should be deployed as a cascade that passes packets from one to the other.

Two load balancers should be deployed as a failover cluster.

Load balancers are used for performance and scalability reasons only and cannot be used to archive high availability clusters.

4. Which configuration file is used to manage and configure Corosync in conjunction with Pacemaker?

corosync.conf

authkey

stonith_admin

sbd

5. What is the purpose of CRUSH maps in Ceph?

To distribute data across OSDs based on predefined rules.

To encrypt data at rest in Ceph storage pools.

To manage access control for CephFS volumes.

To monitor the health and availability of OSDs.

6. Which configuration file is typically used to define DRBD resources and their settings?

/etc/drbd.conf

/etc/drbd.d/

/proc/drbd

/etc/drbd.d/drbd.conf

7. Which replication mode in DRBD provides three-way replication?

Protocol A

Protocol B

Protocol C

Synchronous replication

8. How can you configure VLANs on network interfaces?

By modifying the /etc/network/interfaces file.

By using the nmcli command with appropriate options.

By configuring VLANs in the switch configuration.

By running the ifenslave command with VLAN parameters.

9. What is the purpose of DRBD quorum and split brain handlers?

To detect and resolve split brain situations

To manage the replication mode used by DRBD

To configure automatic recovery and error handling

To monitor the health and status of DRBD devices

10. What is the purpose of a Storage Area Network (SAN)?

To provide network connectivity for servers

To store and retrieve data from remote block storage devices

To connect multiple servers together in a cluster

To manage file systems on distributed storage

Page 2 of 6

11. Which utility is used to manage iSCSI targets and initiators in Linux?

tgtadm

iscsiadm

targets.conf

iscsid.conf

12. Which of the following commands displays only the resources of the cluster information base of a pacemaker cluster?

cibquery -o resources

cibadmin -R

cibadmin -Q -o resources

cibquery -L resources

cib_admin -L resources

13. Which configuration file is used to set up and define the behavior of keepalived in a Load Balanced Cluster?

HAProxy configuration file

genhash configuration file

ldirectord configuration file

keepalived configuration file

14. What is the purpose of configuring monit for alerts in case of resource exhaustion?

To monitor network traffic on the system.

To monitor CPU usage and temperature.

To monitor disk space and memory usage.

To monitor power supply status.

15. Which utility can be used to manage network bonding in Linux?

nmcli

ifenslave

bonding.ko

16. What is the purpose of restoring and verifying the integrity of a Ceph cluster after an outage?

To repair data corruption in storage pools.

To ensure that all OSDs are functioning properly.

To synchronize the metadata between MDS instances.

To rebalance the data across OSDs.

17. What is the purpose of the lvextend command?

To create a new logical volume in LV

To extend the size of an existing logical volume.

To display information about logical volumes.

To remove a logical volume from LV

18. What is the purpose of VRRP (Virtual Router Redundancy Protocol) in a Load Balanced Cluster?

Load balancing algorithm selection

Backend server configuration

IP address failover

ACL management

19. Which resource class in Pacemaker is used to monitor the health of cluster nodes based on CPU usage?

ocf:pacemaker:ping

ocf:pacemaker:NodeUtilization

ocf:pacemaker:ocf:SysInfo

ocf:pacemaker:HealthCPU

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

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.

Page 3 of 6

21. In a cluster with shared-nothing architecture, how is data shared between nodes?

Nodes share a common disk

Data is replicated across all nodes

Each node has its own copy of data

Data is distributed across multiple disks

22. Which utility is used to manage software RAID devices on Linux?

smartctl

fdisk

lvm

mdadm

23. What is the purpose of fencing in a high availability cluster?

Prevent failed nodes from interfering with the remaining intact part of the cluster.

Ensure a consistent assignment of all network connections from a client to the same cluster server.

Define constraints on which services may run on the same cluster node.

Enforce storage quota and other resource limitations for each service provided by the cluster.

Provide multi-tenancy cluster configuration for cloud computing.

24. Which component of a Failover Cluster is responsible for managing cluster resources and making resource-related decisions?

CIB

CRMd

PEngine

LRMd

25. What is the purpose of quorum in a Pacemaker cluster?

Managing node health

Controlling resource location

Preventing split brain scenarios

Configuring resource templates

26. Which clustered file system is commonly used for high-performance computing and large-scale data storage?

AFS (Andrew File System)

Lustre

GFS2 (Global File System 2)

OCFS2 (Oracle Clustered File System 2)

27. In the command: pcs constraint order VHost1IPv4 ____ HTTPD which missing word is required in order to ensure that the service HTTPD is always started after the service VHost1IPv4?

Solution: then -or- THEN

Determine whether the given solution is correct?

Correct

Incorrect

28. What is the purpose of the Cluster Configuration System (CCS)?

It manages the cluster configuration information file.

It fences a dropped node.

It manages ACLs for cluster service access.

It manages the network topology and settings for the cluster.

29. Which function is not supported in a GFS2 filesystem?

repair

grow

shrink

withdraw

30. What is the purpose of the o2info utility?

To create an OCFS2 file system.

To mount an OCFS2 file system.

To check the status of an OCFS2 file system.

To resize an OCFS2 file system.

Page 4 of 6

31. When using DRBD in a Pacemaker cluster, which configuration objects must be managed in order to use the DRBD device as storage for other cluster services? (Choose TWO correct answers.)

A security resource in order to permit other cluster services to access the data on the DRBD device.

A health resource in order to check the integrity of the file system.

A file system resource to mount the device.

A replication resource that synchronizes the DRBD device's data to all nodes that may take over the device after a failover.

A constraint to ensure the device is mounted before the dependent services are started.

32. When running a Linux Virtual Server (LVS) cluster, what is the purpose of a nanny process?

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.

33. In GlusterFS, what is the purpose of recovering from a physical media failure?

To restore data from backups.

To rebuild the storage cluster configuration.

To repair corrupted data on the failed media.

To replace the failed physical media.

34. Which utility is used to manage Distributed Lock Manager (DLM) and LVM with Pacemaker?

tgtadm

iscsiadm

multipath

pacemaker

35. Which load balancing algorithm selects backend servers based on the source IP address of incoming requests?

NAT (Network Address Translation)

Direct Routing

Tunneling

Source IP Hash

36. Which of the following statements are true regarding the determination of the capacity of a high availability cluster? (Choose TWO correct answers.)

The overall capacity of all components in the cluster doesn't have to be larger than the resources needed in a regular setup.

The number of nodes in a cluster has no effect on the availability as long as the sum of the available computing resources is equal.

Failover clusters can be used to scale a single service beyond the capacity of a single cluster node.

In regular cluster operation, not all resources are used.

In case of the failure of any component, enough resources must remain to provide all cluster services.

37. What is LVM (Logical Volume Manager)?

A file system used in Linux for managing storage devices.

A utility for partitioning hard drives into multiple logical volumes.

A software layer that provides flexible management of disk space.

A command-line tool for creating RAID arrays.

38. What is the purpose of an LVM snapshot?

To create a backup copy of a logical volume.

To capture the current state of a logical volume for later reference.

To increase the size of a logical volume dynamically.

To allocate a portion of a physical volume for future use.

39. Which command is used to manage Ceph clusters?

ceph-admin

ceph-deploy

ceph-manager

ceph-control

40. What is the purpose of the sysfs file /sys/class/net/bond*/bonding/slaves in network bonding?

It displays the bonded network interfaces.

It lists the network interfaces that are part of a bonded interface.

It configures the bonding options for network interfaces.

The file /sys/class/net/bond*/bonding/slaves does not exist.

Page 5 of 6

41. HAProxy is commonly used as a load balancer in Load Balanced Clusters.

What is the primary function of HAProxy?

Backend server networking

Connection scheduling algorithms

Load balancing and proxying

IP address failover

42. What is an iSCSI initiator?

A storage device in a SAN

A server or client that connects to an iSCSI target

A protocol used for multipathing in SAN environments

A device used for managing distributed lock management

43. What is the purpose of configuring DRBD networking connections and meshes?

To specify the replication modes used by DRBD

To define the IP addresses and ports used for communication between nodes

To manage split brain situations

To configure automatic recovery and error handling

44. Which file is used to configure S.M.A.R.T monitoring using smartmontools?

/etc/smartd.conf

/etc/monit.conf

/etc/apcupsd.conf

/etc/nvme-cli.conf

45. In DRBD, what is the role of the "Primary" node?

It is the node responsible for initiating replication.

It is the node that stores the replicated data.

It is the node that handles split brain situations.

It is the node that provides read and write access to the replicated data.

46. Which one of the following should NOT be used as a lowlevel device for DRBD?

A LVM logical volume

A physical hard disk

A EVMS volume

A loop device

47. Which file is commonly used to persist network bonding and VLAN configuration in Linux?

/etc/network/interfaces

/etc/sysconfig/networking-scripts/ifcfg-*

/etc/systemd/network/.network

/etc/systemd/network/.netdev

48. Which of the following technologies are parts of the Red Hat Enterprise Linux High Availability Add-On? (Choose THREE correct answers.)

DRBD

LVS

cLVM

Pacemaker

OCFS2

49. How can you extend an LVM volume?

By adding a new physical volume to the volume group.

By resizing the underlying physical partition of the volume.

By adding more extents to the logical volume within the volume group.

By moving the logical volume to a different volume group.

50. Which load balancing algorithm considers the load and capacity of backend servers to distribute traffic efficiently?

NAT (Network Address Translation)

Direct Routing

Tunneling

Dynamic Round Robin

Page 6 of 6

51. How can you create and manage Rados Block Devices (RBDs) in Ceph?

By using the ceph-deploy command-line tool.

By configuring OSDs with the desired storage devices.

By interacting with the rados command-line tool.

By adjusting the CRUSH map to include RBD pools.

52. Which command is used to create a GFS2 file system?

mkfs.gfs2

mount.gfs2

fsck.gfs2

gfs2_grow

53. What is the primary function of the DRBD kernel module?

To handle replication between DRBD devices

To manage networking connections for DRBD

To monitor the health and status of DRBD devices

To provide high availability and automatic failover capabilities

54. Which command-line utility is used to manage Pacemaker resources?

crm_resource

crm_attribute

crm_node

crm_standby

55. What is the purpose of configuring system shutdown at specific UPS events?

To prevent data loss during power outages.

To optimize system performance during high resource usage.

To automatically restart the system after a hardware failure.

To extend the lifespan of storage devices.

56. What is the purpose of a resource rule in Pacemaker?

Managing node health

Controlling resource location

Setting resource order

Configuring resource templates

57. How can you add additional storage capacity to a GlusterFS cluster?

By creating new trusted storage pools

By adding bricks to existing volumes

By increasing the number of peers in the cluster

By creating new volumes

58. Which utility is used to resize a GFS2 file system?

mkfs.gfs2

mount.gfs2

fsck.gfs2

gfs2_grow

59. Which clustered file system is commonly used on Linux and has the acronym OCFS2?

Open Cluster File System 2

Oracle Clustered File System 2

Online Cluster File System 2

Open-source Cluster File System 2

60. What does a Service Level Agreement (SLA) typically define in the context of high availability?

The maximum number of nodes in a cluster

The duration of downtime allowed for a system

The number of resources shared between nodes

The type of load balancing algorithm used

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