Oracle Cloud Infrastructure 2019 Developer Associate — Question 93

You deployed a compute instance (VM.Standard2.16) to run a SQL database. After a few weeks, you need to increase disk performance by using NVMe disks; the number of CPUs will not change. As a first step you terminate the instance and preserve the boot volume.
What is the next step?

Answer options

• A. Create a new instance using a VM.DenseIO2.16 shape using the preserved boot volume and move the SQL Database data to block volume
• B. Create a new instance using a VM.DenseIO2.8 shape using the preserved boot volume and move the SQL Database data to NVMe disks
• C. Create a new instance using a VM.Standard1.16 shape using the preserved boot volume and move the SQL Database data to NVMe disks
• D. Create a new instance using a VM.DenseIO2.16 shape using the preserved boot volume and move the SQL Database data to NVMe disks

Correct answer: A

Explanation

The correct answer is A because it specifies using a VM.DenseIO2.16 shape, which is appropriate for high disk performance, and suggests moving the SQL Database data to block volume. Options B and C do not use the optimal DenseIO shape, which is necessary for improved performance, while option D suggests moving data to NVMe disks, but does not involve preserving the data correctly as required.