Updated Dec-2024 Exam Materials for You to Prepare & Pass 306-300 Exam [Q12-Q34]

Updated Dec-2024 Exam Materials for You to Prepare & Pass 306-300 Exam.

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NEW QUESTION # 12
What is the purpose of the Cluster Configuration System (CCS)?

• A. It manages the cluster configuration information file.
• B. It fences a dropped node.
• C. It manages the network topology and settings for the cluster.
• D. It manages ACLs for cluster service access.

Answer: A

NEW QUESTION # 13
What is an autonomous system in the context of network high availability?

• A. A network with multiple VLANs for traffic separation.
• B. A collection of routers under a single administrative domain.
• C. A network with redundant uplinks for failover.
• D. A system that can operate independently without external connections.

Answer: B

NEW QUESTION # 14
How can you configure traffic shaping and control in Linux?

• A. By using the nmcli command with appropriate options.
• B. By using the ip command with appropriate options.
• C. By modifying the /etc/network/interfaces file.
• D. By configuring traffic shaping parameters in the switch.

Answer: B

NEW QUESTION # 15
What is the purpose of configuring DRBD networking connections and meshes?

• A. To specify the replication modes used by DRBD
• B. To configure automatic recovery and error handling
• C. To define the IP addresses and ports used for communication between nodes
• D. To manage split brain situations

Answer: C

NEW QUESTION # 16
Which of the following statements are true regarding the Red Hat Enterprise Linux High Availability Add-On? (Choose TWO correct answers.)

• A. It is built on top of several high availability components that are also available in other Linux distributions.
• B. It does not include any storage components.
• C. It uses its own messaging subsystem, RHMQ, for cluster communication.
• D. It can be managed using the regular Pacemaker commands like pcs.
• E. It offers support for load balanced clusters only and cannot manage failover clusters.

Answer: A,D

NEW QUESTION # 17
Which utility is used to perform testing and diagnostics on an APC UPS?

• A. nvme-cli
• B. apctest
• C. smartctl
• D. monit

Answer: B

NEW QUESTION # 18
Which O2CB mode should be used for OCFS2 integration with heartbeat?

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

Answer: B

NEW QUESTION # 19
What is the purpose of fencing in a high availability cluster?

• A. Prevent failed nodes from interfering with the remaining intact part of the cluster.
• B. Ensure a consistent assignment of all network connections from a client to the same cluster server.
• C. Define constraints on which services may run on the same cluster node.
• D. Provide multi-tenancy cluster configuration for cloud computing.
• E. Enforce storage quota and other resource limitations for each service provided by the cluster.

Answer: A

NEW QUESTION # 20
Which resource class in Pacemaker is used to monitor the health of cluster nodes based on CPU usage?

• A. ocf:pacemaker:HealthCPU
• B. ocf:pacemaker:ping
• C. ocf:pacemaker:NodeUtilization
• D. ocf:pacemaker:ocf:SysInfo

Answer: A

NEW QUESTION # 21
How can you configure VLANs on network interfaces?

• A. By modifying the /etc/network/interfaces file.
• B. By using the nmcli command with appropriate options.
• C. By configuring VLANs in the switch configuration.
• D. By running the ifenslave command with VLAN parameters.

Answer: A

NEW QUESTION # 22
How does high availability clustering relate to periodic storage backup? (Choose TWO correct answers.)

• A. Regular backups remain vital as they allow restoration of data that was accidentally deleted or corrupted.
• B. Backup procedures may have to be adapted to the cluster to ensure complete and recoverable backups.
• 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. Regular backups become generally unnecessary as any data loss or corruption is automatically recovered by the high availability cluster.
• E. Backups should be located only on the local storage of the cluster and should not be backed up in order to prevent bandwidth congestion.

Answer: A,B

NEW QUESTION # 23
What is the name and path of the configuration file for the O2CB cluster that coordinates the nodes using OCFS2 filesystems?

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

Answer: B

NEW QUESTION # 24
What is the purpose of a resource rule in Pacemaker?

• A. Controlling resource location
• B. Configuring resource templates
• C. Managing node health
• D. Setting resource order

Answer: A

NEW QUESTION # 25
How can the integrity of a DRBD device be restored and verified after an outage?

• A. By reconfiguring the networking connections and meshes
• B. By modifying the /etc/drbd.conf file
• C. By running drbdmeta verify command
• D. By restarting the DRBD service on all nodes

Answer: C

NEW QUESTION # 26
Which bonding mode in network bonding provides load balancing and fault tolerance by aggregating the bandwidth of all active interfaces?

• A. Balance-ALB
• B. Balance-RR
• C. 802.3ad
• D. Balance-XOR

Answer: B

NEW QUESTION # 27
Which function is not supported in a GFS2 filesystem?

• A. shrink
• B. withdraw
• C. repair
• D. grow

Answer: A

NEW QUESTION # 28
How can you replace a failed brick in a GlusterFS cluster?

• A. By creating a new volume and migrating data from the failed brick.
• B. By adding a new peer to the cluster.
• C. By reconfiguring the trusted storage pools.
• D. By detaching the failed brick and attaching a new one.

Answer: D

NEW QUESTION # 29
Which command is used to mount an OCFS2 file system?

• A. fsck.ocfs2
• B. tunefs.ocfs2
• C. mkfs.ocfs2
• D. mount.ocfs2

Answer: D

NEW QUESTION # 30
Which of the following best describes the architecture of DRBD (Distributed Replicated Block Device)?

• A. A file-based replication system
• B. A block-level replication system
• C. A distributed file system
• D. A network storage protocol

Answer: B

NEW QUESTION # 31
Which of the following situations can result in a split brain situation in a high availability cluster?

• A. A cluster node has successfully been fenced.
• B. The load balancer of a load balanced cluster fails.
• C. More than one node is active in a load balanced cluster.
• D. The communication between the cluster nodes is interrupted.
• E. Cluster services are moved between cluster nodes.

Answer: D

NEW QUESTION # 32
What is the purpose of an LVM snapshot?

• A. To allocate a portion of a physical volume for future use.
• B. To increase the size of a logical volume dynamically.
• C. To create a backup copy of a logical volume.
• D. To capture the current state of a logical volume for later reference.

Answer: D

NEW QUESTION # 33
Which replication mode in DRBD provides three-way replication?

• A. Protocol B
• B. Protocol A
• C. Protocol C
• D. Synchronous replication

Answer: C

NEW QUESTION # 34
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