LPIC-3 Exam 306: High Availability and Storage Clusters

Question 1

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 forwardfor

B. option clientlog

C. option reverseproxy

D. option exposeclient

Correct Answer: A

Question 2

Which load balancing algorithm selects backend servers based on the source IP address of incoming requests?

A. Source IP Hash

B. NAT (Network Address Translation)

C. Direct Routing

D. Tunneling

Correct Answer: A

Question 3

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

A. To specify the replication modes used by DRBD

B. To configure automatic recovery and error handling

C. To define the IP addresses and ports used for communication between nodes

D. To manage split brain situations

Correct Answer: C

Question 4

Which Pacemaker feature allows multiple resources to be grouped and managed together?

A. Groups

B. Multi-state resources

C. Clone resources

D. Templates

Correct Answer: A

Question 5

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

A. It segments the cluster nodes into several logical groups that are always fenced together.

B. It makes logical volumes on shared storage available to all cluster nodes.

C. It balances incoming TCP connections to a logical service to several backend nodes.

D. It allows several nodes to share file system locks in order to access the same files simultaneously.

Correct Answer: B

Question 6

In keepalived, what keyword starts the configuration section for one of the failover servers?

A. lvs_server

B. vrrp_instance

C. vrrp_sync_group

D. virtual_server

Correct Answer: D

Question 7

Which components of Ceph are responsible for managing storage devices in the cluster?

A. OSD and MON

B. MON and MDS

C. MGR and MON

D. OSD and MGR

Correct Answer: D

Question 8

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

A. It uses its own messaging subsystem, RHMQ, for cluster communication.

B. It offers support for load balanced clusters only and cannot manage failover clusters.

C. It can be managed using the regular Pacemaker commands like pcs.

D. It does not include any storage components.

E. It is built on top of several high availability components that are also available in other Linux distributions.

Correct Answer: C,E

Question 9

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

A. Volumes

B. Peers

C. Bricks

D. Trusted storage pools

Correct Answer: B

Question 10

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

A. smartctl

B. mdadm

C. fdisk

D. lvm

Correct Answer: B

Lpi LPIC-3 Exam 306: High Availability and Storage Clusters - 306-300 Exam Practice Test

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