Oracle Cloud Infrastructure 2021 Architect Associate — Question 22

You are in the process of migrating several legacy applications from on-premises to Oracle Cloud Infrastructure (OCI). The current servers are already virtualized; however, you notice the version of CentOS currently running does not align with any of the Oracle-provided compute images.
How would you migrate your existing virtual server images to OCI?

Answer options

• A. Export your current image in QED format and copy to an object storage bucket. Import it as a custom image. Select emulated mode to ensure compatibility with legacy drivers
• B. Export your current image in QCOW2 format and copy to an object storage bucket. Import it as a custom image. Select emulated mode to ensure compatibility with legacy drivers.
• C. Export your current image in VMDK format and copy to an object storage bucket. Import it as a custom image. Select native mode to ensure the best possible performance.
• D. Export your current image in VDI format and copy to an abject storage bucket. Import it as a custom image. Select native mode to ensure the best possible performance.

Correct answer: A

Explanation

Option A is correct because exporting the image in QED format and using emulated mode ensures compatibility with legacy drivers, which is crucial for legacy applications. Options B, C, and D are incorrect because they use formats (QCOW2, VMDK, and VDI) that do not align with the requirements for ensuring compatibility with legacy drivers or do not use the correct emulation mode.