304-200 Online Practice Questions and Answers

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

A. Fully virtualized and paravirtualized domains are managed using the same tools and commands.

B. Xen domains of all types require virtualization extensions in the host system's CPU.

C. All fully virtualized domains are called 'Dom0' while all paravirtualized domains are called 'DomU'.

D. Both paravirtualized and fully virtualized domains may run on the same host system.

E. Paravirtualized domains are significantly slower than fully virtualized domains.

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

A. vif

B. eth

C. vnet

D. vbr

E. net

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 of the following statements are true regarding VirtualBox?

A. It supports only Linux as a guest operating system.

B. It is available for Linux only.

C. It provides both a graphical user interface and command line tools to administer virtual machines.

D. It requires dedicated shared storage as it cannot store virtual machine disk images locally on block devices of the virtualization host.

E. It is a special kernel booted before the first regular operating system.

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.)

A. By saving the data to the memory of the computing instance using tmpfs.

B. By saving the data anywhere in the computing instance's file system.

C. By saving the data to /cloud/persistent/ which is provided in all common IaaS clouds.

D. By saving the data to object stores provided by a separate service in the cloud.

E. By saving the data on persistent block devices that must be explicitly connected to the computing instance.

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 situations can result in a split brain situation in a high availability cluster?

A. The load balancer of a load balanced cluster fails.

B. The communication between the cluster nodes is interrupted.

C. Cluster services are moved between cluster nodes.

D. More than one node is active in a load balanced cluster.

E. A cluster node has successfully been fenced.

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?

A. -1

B. 0

C. 1

D. FORCE

E. INFINITY

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

A. host server_x 10.1.0.1:80 cookie server_x

B. backend server_x 10.1.0.1:80

C. server server_x 10.1.0.1:80 check

D. pool server_x 10.1.0.1:80

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

A. Load balancers cannot be protected against outages which is why they should always be built on dedicated hardware.

B. No actions are necessary as a load balancer cannot become a single point of failure.

C. Two or more load balancers should be deployed as a cascade that passes packets from one to the other.

D. Two load balancers should be deployed as a failover cluster.

E. Load balancers are used for performance and scalability reasons only and cannot be used to archive high availability clusters.