EMT Practice Test

1. Question Content...

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Question1: In a cluster with shared-nothing architecture, how is data shared between nodes?

Question2: Which of the following commands can be used to change properties such as the number of node slots or the label of an existing OCFS2 filesystem?

Question3: Which of the following device classes are commonly used STONITH devices? (Choose THREE correct answers.)

Question4: What is the purpose of GlusterFS in a high availability distributed storage system?

Question5: Which command is used to create a GFS2 file system?

Question6: What is the purpose of the sysfs file /sys/class/net/bonding_masters?

Question7: Which configuration file is used to manage and configure Corosync in conjunction with Pacemaker?

Question8: What is the purpose of the o2info utility?

Question9: True or False: It manages the cluster configuration information file is the purpose of the Cluster Configuration System (CCS).

Question10: What is the purpose of managing clustered LVM?

Question11: How can you mount and use an existing CephFS volume?

Question12: What are metadata formats and RAID geometries in the context of RAID arrays?

Question13: Which utility is commonly used to manage and control DRBD devices?

Question14: Which command-line utility is used to manage the Pacemaker cluster configuration database?

Question15: What is the purpose of configuring system shutdown at specific UPS events?

Question16: What is the purpose of integrating DRBD with Pacemaker?

Question17: What is the purpose of ACLs (Access Control Lists) in the context of Load Balanced Clusters?

Question18: Which command is used to manage and configure GlusterFS clusters?

Question19: Which utility is used to create device maps for multipathed devices in Linux?

Question20: What are the key concepts of Ceph updates?

Question21: What is the purpose of fencing in a high availability cluster?

Question22: Which utility is used to manage software RAID devices on Linux?

Question23: Which O2CB mode should be used for OCFS2 integration with heartbeat?

Question24: Which utility is used to generate and manage hash tables for load balancing in a Load Balanced Cluster?

Question25: Which of the following should be used as a lowlevel device for DRBD?

Question26: When using the gatewaying/direct routing forwarding method of Linux Virtual Server (LVS), which of the following statements is true?

Question27: How can the state of the backing storage disks of a DRBD device be checked? (Choose TWO correct answers.)

Question28: Which of the following are not valid load balancing algorithms for HAProxy?

Question29: Which utility is used to perform testing and diagnostics on an APC UPS?

Question30: Which component of GlusterFS is responsible for managing the individual storage nodes in a cluster?

Question31: What is the term used to describe the time interval between failures of a system component?

Question32: What is the purpose of the rados command-line tool in Ceph?

Question33: Which configuration file is used to set up and define the behavior of keepalived in a Load Balanced Cluster?

Question34: What is the purpose of the nvme-cli utility?

Question35: While setting up a load-balanced HTTP service, Linux Virtual Server was configured with the commands:
ipvsadm -A -t 198.51.100.2:80 -s rr
ipvsadm -a -t 198.51.100.2:80 -r 192.168.10.1:80 -m
ipvsadm -a -t 198.51.100.2:80 -r 192.168.10.2:80 -m and all backend servers are using the LVS host as the default router.
Which additional command has to be issued on the LVS host in order to correctly handle incoming HTTP traffic?

Question36: What is the purpose of the lvextend command?

Question37: Which one of the following is NOT a required component for running an OCFS2 filesystem resource in a Pacemaker cluster?

Question38: 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.)

Question39: Which of the following statements is true regarding the quorum in a two node Pacemaker cluster?

Question40: How does high availability clustering relate to periodic storage backup? (Choose TWO correct answers.)

Question41: What is the purpose of RSTP (Rapid Spanning Tree Protocol) in switch configuration for high availability?

Question42: In Pacemaker, which component is responsible for obtaining node information and managing node health?

Question43: Which of the following Messaging Layers are supported by Pacemaker? (Choose TWO correct answers.)

Question44: What is the purpose of configuring monit for alerts in case of resource exhaustion?

Question45: Which component of a Load Balanced Cluster is responsible for monitoring backend servers and making routing decisions?

Question46: How can you create an LVM RAID?

Question47: Which command is used to create a new physical volume in LVM?

Question48: What is the purpose of the Distributed Lock Manager (DLM) in a clustered file system?

Question49: What does S.M.A.R.T stand for in the context of hardware monitoring?

Question50: Which of the following can be used as a low level device for DRBD? (Choose TWO correct answers.)

Question51: How can you replace a failed brick in a GlusterFS cluster?

Question52: Which utility is used to resize a GFS2 file system?

Question53: What is an LVM pool?

Question54: Which of the following are valid load balancing algorithms for HAProxy? (Choose TWO correct answers.)

Question55: Which command-line utility is used to manage Pacemaker resources?

Question56: What is the purpose of restoring and verifying the integrity of a Ceph cluster after an outage?

Question57: What is the purpose of DRBD quorum and split brain handlers?

Question58: Which one of the following options represents a valid declaration of a backend server with HAProxy?

Question59: Which resource class in Pacemaker is used to monitor the health of cluster nodes based on CPU usage?

Question60: Which factor is important to consider when designing an appropriate cluster architecture?

Question61: Which command-line utility is used to manage the fencing devices in a Pacemaker cluster?

Question62: What is the purpose of VRRP (Virtual Router Redundancy Protocol) in a Load Balanced Cluster?

Question63: 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?

Question64: Which resource class in Pacemaker is used to manage the power control of cluster nodes?

Question65: What is the purpose of initializing a Ceph cluster?

Question66: What is the purpose of Device Mapper Multipath I/O (DM-MPIO)?

Question67: What is the purpose of the sysfs file /sys/class/net/bond*/bonding/slaves in network bonding?

Question68: 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?

Question69: Which of the following statements are true regarding the determination of the capacity of a high availability cluster? (Choose TWO correct answers.)

Question70: How can you recover a RAID device after a failure?

Question71: 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.

Question72: Which of the following statements describes fencing resources in a high availability cluster?

Question73: How can the integrity of a DRBD device be restored and verified after an outage?

Question74: Which bonding mode in network bonding provides load balancing and fault tolerance by aggregating the bandwidth of all active interfaces?

Question75: Which of the following statements is true regarding a failover cluster?

Question76: Which command is used to edit and display the running Linux Virtual Server (LVS) configuration?
(Specify ONLY the command without any path or parameters.)
Solution: ipvsadm
Determine whether the given solution is correct?

Question77: Which command is used to check the consistency of an OCFS2 file system?

Question78: What is the purpose of GlusterFS in a high availability distributed storage system?

Question79: What does the /proc/mdstat file contain?

Question80: What is the task of the Cluster Logical Volume Manager, CLVM?

Question81: What is the role of smartd in monitoring hardware failures?

Question82: What is the purpose of configuring DRBD networking connections and meshes?

Question83: What is a partitionable RAID?

Question84: What is true for a virtual IP address in the context of keepalived? (Choose TWO correct answers.)

Question85: 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?

Question86: Which Pacemaker feature is used to detect and handle split brain scenarios when shared storage is used?

Question87: What is the primary function of the DRBD kernel module?

Question88: Which of the following statements are true regarding the handling of a hardware error in a high availability cluster? (Choose THREE correct answers.)

Question89: When running a Linux Virtual Server (LVS) cluster, what is the purpose of a nanny process?

Question90: Which file is commonly used to persist network bonding and VLAN configuration in Linux?

Question91: Which bond mode in network bonding provides fault tolerance by using one active interface and one standby interface?

Question92: What is an iSCSI initiator?

Question93: True or False: shrink function is not supported in a GFS2 filesystem.

Question94: Which type of cluster architecture is designed for high scalability and performance by distributing workloads across multiple nodes?

Question95: Which of the following are Pacemaker components? (Choose TWO correct answers.)