304-200 Online Practice Questions and Answers

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.)

A. 'hvm' -or- andquot;hvmandquot; -or- hvm

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

A. All floppy, CDROM, and hard disk drives in that order.

B. No devices are searched and the user is prompted to choose the boot device.

C. All network interfaces attached to the VM.

D. All hard disks and no other devices.

E. No devices are searched in order to support directly booting a Linux kernel.

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

A. destroy

B. remove

C. shutdown

D. stop

E. halt

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

A. Each KVM virtual machine can only have one CPU with one core.

B. KVM virtual machines support multiple virtual CPUs in order to run SMP systems.

C. The CPU architecture of a KVM virtual machine is independent of the host system's architecture.

D. For each KVM virtual machine one dedicated physical CPU core must be reserved.

E. KVM uses the concept of virtual CPUs to map the virtual machines to physical CPUs.

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

A. change-media -or- virsh change-media -or- qemu-monitor-command -or- virsh qemu-monitor-command

Which of the following statements describes the concept behind paravirtualization?

A. Guest operating systems are modified to actively cooperate with the hypervisor in order to ease virtualization costs and gain better performance.

B. Instead of running full virtual machines, containers are used to separate distinct parts of one commonly shared operating system that appear as a virtual machine.

C. To avoid the need for virtualization, special security measures are taken to allow different applications to coexist on one physical machine.

D. Each operating system is trusted to use only those resources assigned to it, thereby eliminating the need of an additional virtualization layer.

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

A. virt-clone

B. virt-install

C. virt-img

D. virt-manager

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

A. Failover clusters are not operational without at least one dedicated load balancer.

B. All response packages sent from a backend server to a client must pass through the load balancer.

C. The load balancer is usually deployed on one of the backend servers.

D. Load balancers may be able to analyze traffic.

E. All incoming connections to the cluster services are received by the load balancer.

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

A. The addresses of backend servers that were overloaded in the past and should be scheduled with a reduced priority.

B. The hostnames of the servers that, despite the remaining configuration, should always be scheduled by the Serial Operation Round Robin algorithm.

C. The addresses of backend servers that should not get assigned any new connections.

D. The default virtual host that is assigned to incoming HTTP requests missing a Host: header before forwarding them to a backend server.

E. The address of a server to which requests are redirected in case no real server is available.

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

A. High availability provides automatic recovery from software errors only and cannot mitigate hardware issues.

B. After the cluster deals with an error, no manual actions are required to bring the cluster back to normal operation.

C. Erroneous components are physically turned off as they are in an undefined state.

D. Services are restarted on or redirected to other cluster nodes.

E. The cluster management components monitor the health of all cluster components.

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. Enforce storage quota and other resource limitations for each service provided by the cluster.

E. Provide multi-tenancy cluster configuration for cloud computing.

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.)

A. -c -or- c -or- clustered -or- --clustered

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

A. user

B. dlm

C. heartbeat

D. kernel

Which configuration setting ultimately determines which server will be the MASTER with keepalived?

A. advert_int

B. state

C. type

D. priority

Where are paravirtualized device drivers installed?

A. In the Guest OS

B. In the Host OS

C. Compiled into the hypervisor

D. No special drivers are required for paravirtualization.