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2021 Oct 304-200 exam prep
Q41. Which of the following statementsaretrue 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 domainsare significantly slower than fully virtualized domains.
Answer: A, D
Q42. What action does the virsh restore command perform?
A. It restores a virtual machine that was stopped by a kernel panic.
B. It restores a virtual machine from a state file.
C. It reverts a virtual machine, including its storage devices, to a previously saved state.
D. It wakes up a virtual machine that was hibernated by the operating system running inside the virtual machine.
Answer: B
Q43. 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?
A. option reverseproxy
B. option forwardfor
C. option clientlog
D. option exposeclient
Answer: B
Q44. Which of the following commands displays only the resources of the cluster information base of a pacemaker cluster?
A. cibquery -o resources
B. cibadmin -R
C. cibadmin -Q -o resources
D. cibquery -L resources
E. cib_admin -L resources
Answer: C
Q45. CORRECT TEXT Which command in the KVM monitor restores a snapshot? (Specify ONLY the command without any path or parameters.)
Answer:
loadvm
Renovate 304-200 practice:
Q46. CORRECT TEXT
Which command is used to edit and display the running Linux Virtual Server (LVS) configuration? (Specify ONLY the command without any path or parameters.)
Answer:
ipvsadm
Section 3: Sec Three (109 to 120)
Details:Topic 3, High Availability Cluster Storage
Q47. 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.
Answer: A
Q48. What is the usual way to gain command line access to computing instances in an IaaS cloud?
A. By providing a public SSH key to the cloud management system and using the matching private SSH key to log into the instances.
B. Usually computing instances are accessed through a web frontend and do not allow command line access.
C. By either telnet or SSH using the credentials of the cloud management system account with administrative privileges.
D. By using a telnet session with the credentials set and publicized by the creator of the computing instance's system image.
E. By using a VNC console which does not require authentication when it is invoked via the cloud management system.
Answer: A
Q49. 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?
A. rsyncd
B. drbd
C. clraid
D. clmirror
Answer: B
Q50. Which O2CB mode should be used for OCFS2 integration with heartbeat?
A. user
B. dlm
C. heartbeat
D. kernel
Answer: A