High Availability DS0-001 Practice Questions (Page 5)

Questions 21–25

1. 21application · medium

   A database administrator is configuring a two-node failover cluster for a critical application. The application must automatically switch to the secondary node if the primary node becomes unresponsive. Which configuration is essential for automatic failover to work?

   • AConfigure the cluster service to monitor the health of the primary node and automatically start the application on the secondary node upon failure detection.
   • BPlace both nodes in the same rack without network redundancy.
   • CEnsure both nodes have identical IP addresses.
   • DSet the secondary node to be manually started by an administrator when the primary fails.
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2. 22expert · hard

   A company has a failover cluster for its application. The cluster is configured with automatic failover. During a failover event, the application takes longer than expected to come online on the secondary node. Users experience downtime. What is the most likely cause?

   • AThe secondary node needs time to mount the shared storage and start the application services.
   • BThe load balancer is not configured to send traffic to the secondary node.
   • CThe cluster is not configured to automatically fail over.
   • DThe secondary node is not powerful enough to run the application.
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4. 23application · medium

   A company runs a web application behind a load balancer. They want to monitor the performance of the load balancer and the backend servers to ensure optimal uptime. Which metrics should they monitor?

   • ACPU usage, memory usage, and request latency on the backend servers, and the health status of the load balancer.
   • BOnly the error rate of the application.
   • COnly the uptime of the load balancer.
   • DOnly the number of active connections on the load balancer.
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5. 24foundation · easy

   Which hardware solution provides redundancy for data storage by mirroring data across multiple disks?

   • ANetwork switch
   • BLoad balancer
   • CRAID 1
   • DUninterruptible power supply (UPS)
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6. 25foundation · easy

   What is the primary purpose of implementing a cluster in a high availability environment?

   • ATo combine multiple servers so they appear as a single system and provide continuous service if one server fails
   • BTo isolate applications in separate virtual machines for security
   • CTo distribute incoming network traffic evenly across multiple servers to improve performance
   • DTo store data redundantly across multiple disks to prevent data loss
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