1Z0-997-25 Question 44
Select 2Your organization is migrating a revenue-critical e-commerce application to Oracle Cloud Infrastructure (OCI). They need to ensure global availability with minimal downtime in case of a regional outage, while also keeping latency low for users distributed across different continents. Which TWO design components should you include in your architecture to meet these business and technical requirements?
- A
- Implement an OCI Load Balancer with geo-based traffic steering policies and replicate the application stack in two geographically distant OCI regions.
- B
- Use Oracle Data Guard or Active Data Guard for cross-region database replication, ensuring automatic failover if the primary database becomes unavailable.
- C
- Consolidate the entire architecture into a single OCI region with multiple Availability Domains to minimize network complexity and reduce costs.
- D
- Store all application data in ephemeral local NVMe drives across multiple compute instances to simplify failover procedures.
Show answer and explanation
Correct answers: A, B
Explanation
For mission-critical, globally distributed applications, it is essential to design a multi-region solution with efficient failover and low latency. Using an OCI Load Balancer with geo-based routing directs traffic to the nearest healthy region, thus reducing latency. Oracle Data Guard or Active Data Guard replicates the database to a secondary region and manages switchover/failover automatically. This setup satisfies business continuity and SLA demands for high availability. Refer to Oracle Cloud Infrastructure documentation on Data Guard (https://docs.oracle.com/en/solutions/ha-database-oci/index.html) and Traffic Management (https://docs.oracle.com/en-us/iaas/Content/Balance/Concepts/trafficmanagement.htm) for more details.
- A. Correct.
Option 1 is correct. A global or geo-based traffic management approach allows you to direct users to the closest region, improving performance and enabling failover to another region if the primary region goes down.
- B. Correct.
Option 2 is correct. Oracle Data Guard or Active Data Guard helps maintain a synchronized standby of your database in another region. This minimizes data loss (RPO) and supports auto-failover (RTO) upon a primary database failure.
- C. Incorrect.
Option 3 is incorrect. While multiple Availability Domains in a single region can help with local redundancy, they do not protect against an entire region outage. This approach fails to meet strict global availability and minimum downtime requirements for cross-regional scenarios.
- D. Incorrect.
Option 4 is incorrect. Ephemeral local NVMe drives are high-performance, but they are not persistent storage across regions. They cannot independently ensure failover or data consistency if an entire region is lost.