You need to run a business-critical workload on a fixed set of Compute Engine instances for several months. The workload is stable with the exact number of resources allocated to it. You want to lower the costs for this workload without any performance implications. What should you do?
A. Purchase Committed Use Discounts.
B. Migrate the instances to a Managed Instance Group.
C. Convert the instances to preemptible virtual machines.
D. Create an Unmanaged Instance Group for the instances used to run the workload.
Disclaimer
This is a practice question. There is no guarantee of coming this question in the certification exam.
Answer
A
Explanation
Key points are underlined.
You need to run a business-critical workload on a fixed set of Compute Engine instances for several months. The workload is stable with the exact number of resources allocated to it. You want to lower the costs for this workload without any performance implications. What should you do?
A. Purchase Committed Use Discounts.
(When you know that you will have a workload running on a fixed set of instances for several months, you can take advantage of Committed Use Discounts to lower the costs. These discounts provide a lower, sustained usage rate for a committed period of time in exchange for committing to use a certain number of virtual machine (VM) instances or n1-standard hours. This is a good choice because you can lower costs without any performance implications and the workload is stable with the exact amount of resources allocated to it.)
B. Migrate the instances to a Managed Instance Group.
(It will increase the cost.)
C. Convert the instances to preemptible virtual machines.
(Business-critical workload, so preemptible VMs is not the right choice.)
D. Create an Unmanaged Instance Group for the instances used to run the workload.
(It will not lower the cost.)