Lpi LPIC Level 3 304-200 Questions & Answers

• Question 31:

  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?

  A. then -or- THEN

  Correct Answer: A

• Question 32:

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

  A. crm_test

  B. crm_simulate

  C. crm_dryrun

  D. crm_lab

  E. crm_shadow

  Correct Answer: BE

• Question 33:

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

  A. crm manage cluster

  B. crm configure resource

  C. crm service add

  D. crm configure primitive

  E. crm resource new

  Correct Answer: D

• Question 34:

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

  A. DRBD

  B. LVS

  C. cLVM

  D. Pacemaker

  E. OCFS2

  Correct Answer: BCD

• Question 35:

  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?

  A. echo "1" > /proc/sys/net/ipv4/ip_forward

  B. iptables -t nat -Z

  C. ipvsadmin -L -n

  D. ipmasq -A 192.168.10.1 -A 192.168.10.2 -p tcp --dport www -j DEMASQ

  E. netstat -r

  Correct Answer: A

• Question 36:

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

  A. The overall capacity of all components in the cluster doesn't have to be larger than the resources needed in a regular setup.

  B. The number of nodes in a cluster has no effect on the availability as long as the sum of the available computing resources is equal.

  C. Failover clusters can be used to scale a single service beyond the capacity of a single cluster node.

  D. In regular cluster operation, not all resources are used.

  E. In case of the failure of any component, enough resources must remain to provide all cluster services.

  Correct Answer: DE

• Question 37:

  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.

  Correct Answer: A

• Question 38:

  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.

  Correct Answer: D

• Question 39:

  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.

  Correct Answer: CDE

• Question 40:

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

  A. Uninterruptable Power Supplies, UPS

  B. CPU frequency management tools

  C. Blade Control Devices

  D. Remote Management Services like iLO or DRAC

  E. Local node storage

  Correct Answer: ACD