The Most Popular 306-300 Exam Dumps: Pass Your LPIC-3: High Availability and Storage Clusters Exam

1. Which of the following statements describes fencing resources in a high availability cluster?

2. True or False: Define constraints on which services may run on the same cluster node is the purpose of fencing in a high availability cluster.

3. Which utility is used to manage the low-level configuration and settings of DRBD devices?

4. How can you check the status and configuration of network bonding interfaces using the nmcli command?

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

6. What does the term "split brain" refer to in the context of high availability clusters?

7. 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?

8. Which parameter of vgchange controls whether a volume group is shared within a shared storage cluster? (Specify ONLY the option name without any values or parameters.)

Solution: -c -or- c -or- clustered -or- --clustered

Determine whether the given solution is correct?

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

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

11. What are the key concepts of Ceph updates?

12. Which utility is used for monitoring and managing system resources in monit?

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

14. What is true for a virtual IP address in the context of keepalived? (Choose TWO correct answers.)

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

16. Which of the following statements is true about clustered file systems?

17. Which of the following are tools or services that manage a Linux Virtual Server (LVS) setup? (Choose TWO correct answers.)

18. 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?

19. Using Linux Virtual Server (LVS) without any additional tools provides which of the following features?

20. What is the purpose of mdadm monitoring and reporting?

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

22. What does the /proc/mdstat file contain?

23. Which command-line utility is used to manage the fencing devices in a Pacemaker cluster?

24. How can you configure traffic shaping and control in Linux?

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

26. Which bond mode in network bonding provides fault tolerance by using one active interface and one standby interface?

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

28. Which one of the following is NOT a required component for running an OCFS2 filesystem resource in a Pacemaker cluster?

29. Which of the following configuration settings specify that keepalived is to use the round robin algorithm?

30. Load Balanced Clusters commonly utilize which of the following algorithms to distribute incoming traffic among backend servers?

31. Which of the following is not a device classes are commonly used STONITH devices?

32. 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?

33. How can you configure VLANs on network interfaces?

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

35. What is the purpose of monitoring S.M.A.R.T values using smartmontools?

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

37. Which one of the following options represents a valid declaration of a backend server with HAProxy?

38. What is the purpose of RSTP (Rapid Spanning Tree Protocol) in switch configuration for high availability?

39. Which of the following Messaging Layers are supported by Pacemaker? (Choose TWO correct answers.)

40. What is the purpose of ACLs (Access Control Lists) in the context of Load Balanced Clusters?

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

What is the primary function of HAProxy?

42. What is LVM (Logical Volume Manager)?

43. Which utility is used to create device maps for multipathed devices in Linux?

44. How does the command to add a new resource to a Pacemaker cluster using crm begin?

45. Which command is used to create a new physical volume in LVM?

46. What is the purpose of the drbdmon utility?

47. How can you add a new device to an existing RAID array?

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

49. Which of the following commands can be used to safely test and preview Pacemaker configuration changes? (Choose TWO correct answers.)

50. What is the purpose of the nvme-cli utility?

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

52. How can you recover a RAID device after a failure?

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

54. In the command: crm configure ____ http-after-ipv4 Mandatory: VHost1IPv4 HTTPD which missing word is required in order to ensure that the service HTTPD is always started after the service VHost1IP?

Solution: order -or- ORDER

Determine whether the given solution is correct?

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

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

57. Which command-line utility is used to manage the Pacemaker cluster configuration database?

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

59. What is the purpose of placement groups (PGs) in a Ceph cluster?

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

61. Which utility is commonly used to manage and control DRBD devices?

62. Which of the following sections are found in the Pacemaker configuration XML file?

63. Which cluster architecture involves a primary node and a standby node that takes over when the primary node fails?

64. What is network bonding?

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

66. What is the purpose of the lvextend command?

67. Which tool is used to configure system shutdown at specific UPS events?

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

69. When using HAProxy to load balance requests over a set of web servers, what directive is needed in the HAProxy configuration in order to be able to log, on the backend web servers, the IP address of the client making a request?

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