LFCE High Availability Services Quiz

1. What does the term 'failover' mean in cluster terminology?

Automatic transfer of services to a backup node

Failure of all cluster nodes

Inability to connect to the network

Rollback of configuration changes

2. What does RPO (Recovery Point Objective) measure in disaster recovery?

Maximum acceptable data loss

Time to restore full functionality

Number of backup copies

Bandwidth required for replication

3. In session persistence (sticky sessions), requests from the same client are routed to the same backend. True or False?

True

False

4. Which command is used to check cluster status in Pacemaker?

Crm_mon

Cluster status

Pacemaker check

Ha_status

Submit

6. Resource constraints in Pacemaker define relationships between services. True or False?

True

False

7. RHCS (Red Hat Cluster Suite) uses which protocol for cluster communication?

Corosync

OpenAIS

Heartbeat

All of the above

8. What is the purpose of a health check in load balancing?

Verify backend servers are responsive and healthy

Encrypt client connections

Monitor CPU temperature

Update DNS records

9. Which file typically defines cluster resources and constraints in Pacemaker?

Cluster.conf

CIB (Cluster Information Base)

/etc/hosts

/etc/network/interfaces

Submit

11. What is the primary purpose of a heartbeat mechanism in a high availability cluster?

Monitor node health and detect failures

Encrypt network traffic between nodes

Distribute database queries

Compress log files

12. In active-passive clustering, resources run on only one node at a time. True or False?

True

False

13. Keepalived is primarily used for which high availability function?

Virtual IP failover and health checking

Database replication

File system synchronization

SSL certificate management

14. Which load balancing algorithm distributes requests in round-robin fashion?

Least connections

IP hash

Round robin

Weighted response time

15. What is the main role of a virtual IP (VIP) in a high availability setup?

Provide a single endpoint that clients connect to

Encrypt all cluster traffic

Manage DNS records

Monitor disk I/O

16. A quorum requires more than half the nodes to prevent split-brain. True or False?

True

False

17. Which protocol is used by Corosync for node communication in clusters?

UDP multicast

TCP unicast

ICMP echo

DHCP broadcast

18. What does STONITH stand for in cluster management?

Secure Transfer Of Network Information Through Hardware

Shoot The Other Node In The Head

Synchronize Traffic Over Network In The Host

Store The Operations Node In The Hypervisor

19. In a split-brain scenario, what happens when cluster nodes lose communication?

All nodes continue operating independently

All nodes automatically shut down

Both partitions may try to manage the same resources

Network traffic is automatically rerouted

20. Which tool is commonly used for managing high availability clusters on Linux?

Pacemaker

Apache

Nginx

Docker

LFCE High Availability Services Quiz

1. What does the term 'failover' mean in cluster terminology?

2.

What first name or nickname would you like us to use?

2. What does RPO (Recovery Point Objective) measure in disaster recovery?

3. In session persistence (sticky sessions), requests from the same client are routed to the same backend. True or False?

4. Which command is used to check cluster status in Pacemaker?

5. The minimum number of nodes required for a basic HA cluster is ____.

6. Resource constraints in Pacemaker define relationships between services. True or False?

7. RHCS (Red Hat Cluster Suite) uses which protocol for cluster communication?

8. What is the purpose of a health check in load balancing?

9. Which file typically defines cluster resources and constraints in Pacemaker?

10. HAProxy is a popular open-source tool for ____.

11. What is the primary purpose of a heartbeat mechanism in a high availability cluster?

12. In active-passive clustering, resources run on only one node at a time. True or False?

13. Keepalived is primarily used for which high availability function?

14. Which load balancing algorithm distributes requests in round-robin fashion?

15. What is the main role of a virtual IP (VIP) in a high availability setup?

16. A quorum requires more than half the nodes to prevent split-brain. True or False?

17. Which protocol is used by Corosync for node communication in clusters?

18. What does STONITH stand for in cluster management?

19. In a split-brain scenario, what happens when cluster nodes lose communication?

20. Which tool is commonly used for managing high availability clusters on Linux?