EMT Practice Test

1. Question Content...

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Question1: 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?

Question2: 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?

Question3: Which of the following products use container-based virtualization? (Choose THREE correct answers.)

Question4: What is XAPI?

Question5: Which of the following is true regarding the CPU of a KVM virtual machine? (Choose TWO correct answers.)

Question6: After the Xen guest configuration file debian.cfg has been created and successfully tested, which additional action must be performed in order to make this Xen guest start automatically every time the host system boots?

Question7: When migrating a physical machine to a full virtualized machine, which of the following properties should be expected to change from the perspective of the guest operating system? (Choose TWO correct answers.)

Question8: Which of the following commands provides a detailed list of all image files contained in the libvirt storage pool vol1?

Question9: Which of the following statements is true regarding journals of a GFS2 filesystem?

Question10: SIMULATION
Which command is used to perform all central management and configuration operations regarding OpenVZ containers? (Specify ONLY the command without any path or parameters.)

Question11: Which of the following commands lists the snapshots existing in the disk image vm1.img?

Question12: Which one of the following options represents a valid declaration of a backend server with HAProxy?

Question13: Which of the following KVM monitor commands changes the image file in the first IDE CDROM drive of a virtual machine?

Question14: Which of the following are valid KVM parameters? (Choose THREE correct answers.)

Question15: SIMULATION
Which sub-command of xl changes the media inside a virtual CD-ROM drive of a Xen guest domain?
(Specify ONLY the sub-command without any path or parameters.)

Question16: When preparing a public machine image for the provisioning of new cloud computing instances, which of the following steps should be done? (Choose TWO correct answers.)

Question17: Which of the following are tools or services that manage a Linux Virtual Server (LVS) setup? (Choose TWO correct answers.)

Question18: Which of the following commands can be used to safely test and preview Pacemaker configuration changes? (Choose TWO correct answers.)

Question19: Which of the following statements are true for full virtualization? (Choose TWO correct answers.)

Question20: Which of the following data should be copied to the virtual machine when migrating a physical machine to a virtual machine?

Question21: How can data be shared between several virtual machines running on the same Linux-based host system?

Question22: Which CPU flag indicates the hardware virtualization capability on an AMD CPU?

Question23: Which of the following are Pacemaker components? (Choose TWO correct answers.)

Question24: Which of the following statements are true about container-based virtualization? (Choose TWO correct answers.)

Question25: Which of the following sections are found in the Pacemaker configuration XML file?

Question26: Which of the following situations can result in a split brain situation in a high availability cluster?

Question27: Which command within virsh lists the virtual machines that are available on the current host?

Question28: Which of the following statements is true regarding XenStore?

Question29: Which of the following technologies is the most important component of IaaS clouds?

Question30: Which of the following commands are needed to establish a private network between two (or more) KVM virtual machines that is not visible to other KVM instances on the same KVM host? (Choose THREE correct answers.)

Question31: SIMULATION
Which command in the KVM monitor ejects the first IDE CDROM drive? (Specify the KVM monitor command INCLUDING ALL REQUIRED PARAMETERS.)

Question32: Which of the following directives is used in the configuration file of a Xen guest domain in order to define network interfaces?

Question33: SIMULATION
Which virsh subcommand is used to change the CD-ROM image file attached to a virtual machine?
(Specify ONLY the subcommand without any parameters.)

Question34: Which of the following commands can be used to determine whether the local machine is capable of running full virtualized Xen guests? (Choose TWO correct answers.)

Question35: When using the gatewaying/direct routing forwarding method of Linux Virtual Server (LVS), which of the following statements is true?

Question36: How does high availability clustering relate to periodic storage backup? (Choose TWO correct answers.)

Question37: Which of the following types of guest systems does Xen support? (Choose TWO correct answers.)

Question38: What does IaaS stand for?

Question39: Which of the following resources are directly (i.e. without specialized machine images) available to users of an OpenStack cloud? (Choose THREE correct answers.)

Question40: Which of the following statements is true regarding VirtualBox?

Question41: SIMULATION
What is the name of the global configuration file for the xl tool stack? (Specify the file name only without any path.)

Question42: Which of the following statements describes the concept behind paravirtualization?

Question43: Which of the following commands displays only the resources of the cluster information base of a pacemaker cluster?

Question44: 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.)

Question45: 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?

Question46: A configuration file for a Xen virtual machine was created with file name slack.cfg within Xen's configuration directory. Which of the following commands starts the virtual machine defined in this configuration file and opens the virtual machine's console on the current command line?

Question47: In order to use the option dom0_mem to limit the amount of memory assigned to the Xen Domain-0, where must this option be specified?

Question48: How can data in a computing instance in an IaaS cloud be permanently saved and accessed even after the recreation of the computing instance? (Choose TWO correct answers.)

Question49: Which file format is used by libvirt to store configuration data?

Question50: Using Linux Virtual Server (LVS) without any additional tools provides which of the following features?

Question51: SIMULATION
Which subcommand of virsh opens the XML configuration of a virtual network in an editor in order to make changes to that configuration? (Specify ONLY the subcommand without any parameters.)

Question52: Which of the following statements describes fencing resources in a high availability cluster?

Question53: Which of the following statements are true regarding a load balancer? (Choose TWO correct answers.)

Question54: Which statement is true regarding the Linux kernel module that must be loaded in order to use KVM?

Question55: Which of the following statements is true regarding networking with libvirt?

Question56: SIMULATION
Which value must be set in the option builder in the configuration file of a Xen guest domain in order to create a fully virtualized machine instead of a paravirtualized one? (Specify ONLY the value without any option name, quotes or operators.)

Question57: Which of the following statements are true regarding VirtualBox?

Question58: In keepalived, what is configured by the configuration option sorry_server?

Question59: Which of the following statements are true regarding resource management for full virtualization? (Choose TWO correct answers.)

Question60: What is the usual way to gain command line access to computing instances in an IaaS cloud?

Question61: Which one of the following is NOT a required component for running an OCFS2 filesystem resource in a Pacemaker cluster?

Question62: SIMULATION
Which sub-command of xl lists the block devices that are currently attached to a Xen guest domain?
(Specify ONLY the sub-command without any path or parameters.)

Question63: Which of the following can be used as a low level device for DRBD? (Choose TWO correct answers.)

Question64: Which of the following tasks is performed by Vagrant?

Question65: Within the graphical output of a KVM virtual machine, which key sequence switches to the KVM monitor of the VM?

Question66: Which of the following statements is true regarding the following output of xl list:
Name ID Mem VCPUs State Time(s)
Domain-0 0 384 1 r----- 498.7
Debian 2 305 1 --p--- 783.5
Slack 6 64 1 -b---- 313.6
CentOS 7 512 2 r----- 455.1

Question67: What is the task of the Cluster Logical Volume Manager, CLVM?

Question68: Which of the following are valid load balancing algorithms for HAProxy? (Choose TWO correct answers.)

Question69: Which of the following restrictions is true when using KVM with the User Network?

Question70: SIMULATION
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.)

Question71: Which of the following Messaging Layers are supported by Pacemaker? (Choose TWO correct answers.)

Question72: Which of the following technologies are parts of the Red Hat Enterprise Linux High Availability Add-On?
(Choose THREE correct answers.)

Question73: Which of the following tools is used to interact with XenStore?

Question74: SIMULATION
In order to determine if a virtualization host offers Intel VT-x support, which CPU flag must be searched for in the file /proc/cpuinfo? (Specify the name of the CPU flag as it is mentioned in the given file only without any additional information.)

Question75: When used with KVM, which of the following block device image formats support snapshots?

Question76: Which of the following statements are true regarding the Red Hat Enterprise Linux High Availability Add- On? (Choose TWO correct answers.)

Question77: SIMULATION
When using direct Linux booting to start Linux within a KVM virtual machine, which KVM parameter is used to specify parameters for the Linux Kernel? (Specify ONLY the option name without any values or parameters.)

Question78: Which actions should be taken in a load balanced cluster in order to protect the load balancer against outages?

Question79: What is true for a virtual IP address in the context of keepalived? (Choose TWO correct answers.)

Question80: Which daemon applies the configuration and commands of libvirt to the virtualization components of the host system?

Question81: 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?

Question82: Which of the following statements are true regarding OCFS2? (Choose TWO correct answers.)

Question83: How does the command to add a new resource to a Pacemaker cluster using crm begin?

Question84: When KVM is launched with the parameter -boot order=n, which of the following devices will be searched for a bootable operating system?

Question85: What is oVirt?

Question86: Which of the following tasks are parts of a hypervisor's responsibility? (Choose TWO correct answers.)

Question87: Which of the following statements are true regarding hardware based virtualization? (Choose TWO correct answers.)

Question88: SIMULATION
In the command
vzctl ____ 105 /usr/bin/apt-get install wget
which subcommand of vzctl is missing in order to install wget in the OpenVZ container 105?

Question89: What is the purpose of fencing in a high availability cluster?

Question90: Which of the following device classes are commonly used STONITH devices? (Choose THREE correct answers.)

Question91: Which of the following configuration settings specify that keepalived is to use the round robin algorithm?

Question92: 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?

Question93: Which one of the following tools can NOT be used to create virtual machines, including their configuration in a libvirt-based KVM environment?

Question94: Which of the following statements is true regarding a failover cluster?

Question95: Which of the following statements are true regarding Xen domains? (Choose TWO correct answers.)

Question96: SIMULATION
Which command is used to edit and display the running Linux Virtual Server (LVS) configuration? (Specify ONLY the command without any path or parameters.)

Question97: What is the name and path of the configuration file for the O2CB cluster that coordinates the nodes using OCFS2 filesystems?

Question98: Which of the following describes a split brain situation in a high availability cluster?

Question99: When running a Linux Virtual Server (LVS) cluster, what is the purpose of a nanny process?

Question100: How can the state of the backing storage disks of a DRBD device be checked? (Choose TWO correct answers.)

Question101: Which of the following commands boots a KVM virtual machine using Debian GNU/Linux?

Question102: Which O2CB mode should be used for OCFS2 integration with heartbeat?

Question103: Which of the following components are parts of XAPI? (Choose TWO correct answers.)

Question104: SIMULATION
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?

Question105: SIMULATION
What is the name of the kernel module that is required to be loaded in order to use KVM on an Intel CPU architecture? (Specify ONLY the module name without any path information and with or without the module suffix.)

Question106: Which of the following statements are true regarding IaaS computing instances? (Choose TWO correct answers.)

Question107: Which of the following KVM parameters is identical to the KVM parameter -hdb file.img?

Question108: 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?

Question109: SIMULATION
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?

Question110: SIMULATION
Which command in the KVM monitor restores a snapshot? (Specify ONLY the command without any path or parameters.)

Question111: What action does the virsh restore command perform?

Question112: Which options to the xl command will deactivate a running Xen virtual machine? (Choose TWO correct answers.)

Question113: What is the effect of running the virsh vcpupin CLUSNODE-2 4 2 command?

Question114: Which of the following statements is true regarding the quorum in a two node Pacemaker cluster?

Question115: SIMULATION
Which command was used in Xen 3.x as a predecessor of the xl command? (Specify ONLY the command without any path or parameters.)

Question116: Which of the following statements are true regarding emulation? (Choose TWO correct answers.)

Question117: Which of the following statements are true regarding the handling of a hardware error in a high availability cluster? (Choose THREE correct answers.)

Question118: Which of the following circumstances prevent the usage of container based virtualization? (Choose TWO correct answers.)

Question119: Which of the following statements are true regarding the determination of the capacity of a high availability cluster? (Choose TWO correct answers.)

Question120: What is libvirt?