1Z0-1072-25 Question 40
Select 2You have a mission-critical workload running on a VM.Compute shape in Oracle Cloud Infrastructure (OCI) within a single Availability Domain. OCI has announced a maintenance event scheduled for this weekend that requires a reboot of your instances. You want to keep downtime minimal and ensure a seamless user experience. Which two actions should you take to reduce the impact of this maintenance?
- A
Implement a multi-AD load balancer so traffic can fail over to an instance in a different Availability Domain during maintenance.
- B
Disable the custom firewall on your instances to avoid interfering with the maintenance process.
- C
Take no action�Oracle guarantees zero downtime for all VM.Compute shapes, even during maintenance events.
- D
Schedule a manual reboot migration of your instances in the OCI console prior to the maintenance to control the timing.
Show answer and explanation
Correct answers: A, D
Explanation
Infrastructure maintenance in OCI often involves underlying host updates, which can require instance reboots. To minimize downtime, Oracle recommends distributing workloads across multiple Availability Domains and leveraging services like Load Balancer for failover. Additionally, proactively rebooting or migrating instances before a scheduled maintenance event gives you control over timing and helps avoid unexpected disruptions. Refer to Oracle Cloud Infrastructure documentation on 'Maintenance Events' within the Compute service and best practices for high availability for more details.
- A. Correct.
Correct: Using a multi-AD load balancer allows you to redirect traffic to a healthy instance in another Availability Domain if one domain undergoes maintenance. This approach helps maintain service availability and minimizes downtime.
- B. Incorrect.
Incorrect: Disabling your custom firewall does not reduce downtime. Maintenance events involve a reboot at the hypervisor or infrastructure level; your instance� firewall configuration does not affect Oracle� ability to reboot the underlying host.
- C. Incorrect.
Incorrect: While Oracle strives to minimize disruptions, certain VM.Compute shapes may require a reboot. There is no guarantee of zero downtime unless your architecture is designed for high availability or you take proactive measures.
- D. Correct.
Correct: Manually scheduling a reboot migration before the maintenance window allows you to control when your instances temporarily go offline. This helps you coordinate with your application� usage patterns or off-peak hours, reducing user impact.