Oracle Cloud Infrastructure 2019 Developer Associate — Question 81

You are the Cloud Architect of a company, and are designing a solution on Oracle Cloud Infrastructure where you want to have all your compute instances resistant to hardware failure.
Which two are recommended best practices to achieve the requirement on Oracle Cloud Infrastructure? (Choose two.)

Answer options

• A. Create a custom image of your system drive each time you change the image.
• B. Attach block volumes from different Availability Domains to compute instances in different Availability Domains for high availability.
• C. Design your system with redundant compute modes in different Availability Domains to support the failover capability.
• D. Create backups of your block volumes that are associated with compute instances in different regions.

Correct answer: A, C

Explanation

Option A is correct because creating a custom image ensures that you have a backup of your system configuration, making recovery easier in case of failure. Option C is also correct as having redundant compute modes in different Availability Domains allows for failover capabilities, enhancing resilience. Options B and D do not directly address the requirement of ensuring compute instance availability during hardware failures as effectively as A and C do.