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The LPIC-3 Exam 306 covers a wide range of topics related to high-availability and storage clusters. Some of the key areas that are covered in 306-300 exam include cluster planning and configuration, cluster management and maintenance, cluster monitoring and troubleshooting, and data storage management. Candidates who pass 306-300 exam demonstrate their ability to design and implement highly available and fault-tolerant clusters using Linux-based technologies.
Lpi 306-300 (LPIC-3 Exam 306: High Availability and Storage Clusters) Certification Exam is a professional certification designed to validate the skills and knowledge of IT professionals who are responsible for designing, implementing, and managing high availability and storage clusters in Linux environments. LPIC-3 Exam 306: High Availability and Storage Clusters certification exam is intended for experienced Linux professionals who possess a strong understanding of Linux administration, networking, and storage technologies.
NEW QUESTION # 24
Which command is used to create a new physical volume in LVM?
- A. pvcreate
- B. pvdisplay
- C. vgcreate
- D. lvcreate
Answer: A
NEW QUESTION # 25
Which of the following Messaging Layers are supported by Pacemaker? (Choose TWO correct answers.)
- A. DRBD
- B. SCMP
- C. Slurm
- D. OpenAIS
- E. Heartbeat
Answer: D,E
NEW QUESTION # 26
When running a Linux Virtual Server (LVS) cluster, what is the purpose of a nanny process?
- A. 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.
- B. The nanny process changes the IP routing table in the Linux kernel according to the LVS configuration.
- C. The nanny process restarts the daemon of a failed service on a real server node.
- D. The nanny process powers off a nonfunctional backend server.
Answer: A
NEW QUESTION # 27
What does the term "split brain" refer to in the context of high availability clusters?
- A. Data inconsistency due to replication delays
- B. Network partition causing communication issues
- C. Nodes competing for resources after a failure
- D. Failure of the entire cluster
Answer: B
NEW QUESTION # 28
Which tool is used to configure and manage CephFS volumes?
- A. cephfs-admin
- B. cephfs-deploy
- C. cephfs-control
- D. cephfs-manager
Answer: C
NEW QUESTION # 29
What is a partitionable RAID?
- A. A RAID level that supports resizing of the array partitions.
- B. A RAID level that combines multiple arrays into a single container.
- C. A RAID configuration that allows multiple partitions on each disk.
- D. A RAID setup that uses partition tables for data distribution.
Answer: C
NEW QUESTION # 30
Which of the following should be used as a lowlevel device for DRBD?
- A. A loop device
- B. A EVMS volume
- C. Session handling
Answer: B
NEW QUESTION # 31
Which mechanism is used to ensure only one node has access to shared resources in a cluster?
- A. Fencing
- B. Split brain
- C. Replication
- D. Quorum
Answer: A
NEW QUESTION # 32
What is the purpose of the sysfs file /sys/class/net/bond*/bonding/miimon in network bonding?
- A. The file /sys/class/net/bond*/bonding/miimon does not exist.
- B. It manages the master-slave relationship between network interfaces.
- C. It displays the status of network interfaces in bonding mode.
- D. It configures the monitor interval for link status checking.
Answer: D
NEW QUESTION # 33
Which of the following statements is true about clustered file systems?
- A. They provide concurrent access to shared file systems in a cluster.
- B. They are limited to specific Linux distributions.
- C. They are only used for distributed file storage.
- D. They cannot be maintained and troubleshooted.
Answer: A
NEW QUESTION # 34
How can the state of the backing storage disks of a DRBD device be checked? (Choose TWO correct answers.)
- A. cat /proc/drdb
- B. drbdadm state --disk all
- C. cat /proc/drdb/status
- D. drbdadm dstate all
- E. drbdadm diskstatus all
Answer: A,D
NEW QUESTION # 35
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?
- 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
Answer: C
NEW QUESTION # 36
Which utility is used to resize a GFS2 file system?
- A. gfs2_grow
- B. mount.gfs2
- C. fsck.gfs2
- D. mkfs.gfs2
Answer: A
NEW QUESTION # 37
Which of the following are not valid load balancing algorithms for HAProxy?
- A. source
- B. leastconn
- C. weightedrr
Answer: C
NEW QUESTION # 38
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. clraid
- C. drbd
- D. clmirror
Answer: C
NEW QUESTION # 39
Which configuration file is used to set up and define the behavior of keepalived in a Load Balanced Cluster?
- A. genhash configuration file
- B. HAProxy configuration file
- C. ldirectord configuration file
- D. keepalived configuration file
Answer: D
NEW QUESTION # 40
Which command-line utility is used to manage the Pacemaker cluster configuration database?
- A. pcs
- B. crm_mon
- C. crm
- D. cibadmin
Answer: D
NEW QUESTION # 41
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