Resource Optimization CV0-004 Practice Questions (Page 7)

Questions 31–35

1. 31application · medium

   An e-commerce application experiences predictable traffic spikes during weekday lunch hours and weekend evenings. The current deployment uses a fixed number of VMs sized for peak load, which results in low utilization during off-peak times. The company wants to reduce costs while maintaining performance during the predictable peaks. What should the administrator implement?

   • AKeep the fixed number of VMs but purchase reserved instances to lower the hourly cost.
   • BSet up autoscaling based on CPU utilization thresholds so instances are added when CPU exceeds 80%.
   • CReduce the VM size and rely on load balancing to distribute the increased load during peaks.
   • DConfigure autoscaling based on a schedule that adds instances before the expected peak and removes them after.
   Reveal Solution Discussion Select an answer first
2. 32application · medium

   An administrator suspects that a web server is under-provisioned because users report slow response times during peak hours. The administrator wants to confirm the bottleneck before making any changes. What should the administrator do?

   • AImmediately upgrade the server to a larger instance type to improve performance.
   • BReview the firewall logs to see if traffic is being blocked.
   • CReview the server's CPU, memory, disk I/O, and network metrics during the reported peak hours.
   • DCheck the server's uptime to ensure it has not rebooted recently.
   Reveal Solution Discussion Select an answer first
4. 33foundation · easy

   Which data is most important when determining the right size for a cloud virtual machine?

   • AThe age of the virtual machine
   • BThe number of users in the organization
   • CThe cost of the instance type
   • DHistorical CPU and memory utilization metrics
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5. 34foundation · easy

   Which metric is most useful for identifying a potential performance bottleneck in a cloud application?

   • ATotal cost of resources
   • BAge of the application
   • CNumber of virtual machines
   • DCPU utilization percentage
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6. 35expert · hard

   A company runs a stateful web application on multiple VMs. The application stores session data locally on each VM. The administrator wants to implement load balancing to distribute traffic evenly, but is concerned about session persistence. What should the administrator do to ensure a seamless user experience?

   • AConfigure the load balancer to use sticky sessions (session affinity) so that a user's requests are always sent to the same VM.
   • BDisable load balancing and use DNS round-robin to distribute traffic.
   • CIncrease the VM size to handle all sessions on a single VM.
   • DUse a round-robin load balancing algorithm to distribute traffic evenly, ignoring session state.
   Reveal Solution Discussion Select an answer first