Be able to design a multi-region DR topology and correctly sequence Data Guard role transitions. The most important thing is distinguishing planned switchover from unplanned failover and knowing the required post-failover reinstate action.
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Domain overview
This domain covers designing resilient OCI architectures across availability domains and regions. It is tested through scenario questions on Data Guard switchover and failover, multi-region application tier design, and choosing among backup, standby, and replication strategies for Compute, Autonomous Database, and Base Database Systems.
Exam objectives
Configuring cross-region Oracle Data Guard associations for Autonomous Database and Base Database Systems, including switchover and failover procedures.
Designing multi-region disaster recovery for application tiers using OCI Compute, load balancers, and region-scoped services.
Selecting strategies to survive regional outages: multi-AD deployment, cross-region replication, and standby environments.
Understanding recovery actions after unplanned primary database outage, including reinstate and role transition steps.
Confusing switchover, which is planned and reversible, with failover, which is unplanned and requires reinstate of the old primary.
Assuming a single-region multi-AD deployment protects against a full regional outage; it does not.
Forgetting that application tier state and configuration must be replicated separately from database Data Guard protection.
Click any question to see the full explanation and answer options, or start a focused practice session above.
You are deploying OCI Full Stack Disaster Recovery (FSDR) to orchestrate a cross-region DR plan for a multi-tier application stack. Which component acts as the primary grouping mechanism for all application assets (databases, compute, load balancers) within a compartment?
2An enterprise application uses an Oracle Exadata Database Service on Dedicated Infrastructure with Maximum Availability Architecture (MAA). A catastrophic regional disaster occurs, and you must initiate a failover to the standby region. What is the expected behavior of Active Data Guard during this process?
3Your company requires automated daily backups of block volumes attached to critical production compute instances in OCI. Which OCI service feature should you configure?
4When configuring an OCI Network Load Balancer (NLB) for high availability across availability domains, what is a key architectural characteristic of the NLB service?
5You are designing a disaster recovery strategy for an Oracle Autonomous Database (Serverless) instance. You need to ensure the database can failover to a remote region with minimal RPO. Which feature should you configure?
6An architect is evaluating RTO and RPO requirements for an Oracle Exadata Database Service in OCI. The business demands an RPO of zero and an RTO of less than two minutes. Which configuration meets this requirement?
7An Oracle Cloud Infrastructure (OCI) architect is designing a high-availability web tier across multiple Availability Domains (ADs) within a single region. Which component should be used to distribute incoming client traffic evenly across web server instances residing in different ADs?
8You are planning the backup retention strategy for critical Oracle Base Database Service instances in OCI. You want to retain weekly backups for 12 months and daily backups for 30 days. Where are these automated backups stored by default?
9An application deployed across two OCI regions uses a DNS-based traffic management steering policy. A database failure occurs in the primary region, and the application must failover to the secondary region. What is the primary limitation of relying solely on DNS Traffic Management for disaster recovery failover?
10Your organization has a strict Recovery Point Objective (RPO) of 5 minutes and Recovery Time Objective (RTO) of 15 minutes for a multi-tier application. The database tier uses Oracle Data Guard. During a test drill, you notice that redo transport lag spikes to 8 minutes. What is the most likely architectural bottleneck causing this issue?
11When designing high availability across multiple Availability Domains in an OCI region, how should database or application subnets be configured to ensure fault tolerance?
12An architect is configuring an OCI Full Stack Disaster Recovery plan. The plan includes a step to run a custom script on an application server during a failover drill. Which OCI service executes this custom script?
13An application running on OCI compute instances requires disaster recovery protection. You want to replicate boot volumes and block volumes to a secondary region. Which OCI Block Volume feature facilitates this?
14You are configuring a Data Guard association between two Oracle Base Database Systems in different OCI regions. The primary database encounters an unplanned outage, and you perform a manual failover. What action must you take afterward if you wish to restore the original architecture with the old primary as the new standby?
15Which OCI service can be used to monitor the health and performance of your load balancers and backend compute instances across multiple availability domains, triggering alarms if health checks fail?
16An architect is designing a multi-region disaster recovery architecture for an application running on OCI Compute. The database layer uses Oracle Data Guard. For the application tier, what is the recommended approach to handle stateless application servers in the DR region?
17Which OCI networking component is required to securely connect a VCN in one OCI region to a VCN in another OCI region for cross-region Data Guard database replication?
18You are performing maintenance on an OCI Load Balancer backend set. You want to temporarily stop sending traffic to a specific backend server without immediately dropping active persistent connections. What feature should you use?
19Your organization has deployed an enterprise workload on OCI Exadata Database Service. You are configuring Data Guard with Fast-Start Failover (FSFO). To prevent split-brain scenarios where both primary and standby databases assume primary roles simultaneously, where must the Data Guard Observer be placed?
20An architect is configuring Oracle Autonomous Database Disaster Recovery with cross-region Data Guard. The primary database is in Ashburn, and the standby is in Phoenix. You execute a switchover operation. What happens to the connection strings (such as tnsnames.ora entries) used by client applications?
21Which OCI storage service provides massively scalable, highly durable regional object storage that is ideal for storing database backups and disaster recovery artifacts?
22Your organization uses OCI Full Stack Disaster Recovery to manage failovers between Region A and Region B. During a DR drill, you notice that a custom user-defined step failed because the dependent compute instance in Region B was not yet fully running. How should you resolve this dependency issue in the FSDR plan?
23An enterprise application hosted on OCI requires high availability across multiple fault domains within a single availability domain. Which resource placement strategy should you use for your application compute instances?
24Which TWO of the following statements are correct regarding OCI Load Balancer features for high availability? (Choose two.)
25When designing a disaster recovery plan using OCI Full Stack Disaster Recovery (FSDR), which THREE resource types can be managed and orchestrated within a DR Protection Group? (Choose three.)
26Which TWO actions can you take in OCI to ensure high availability of application data stored in Block Volumes? (Choose two.)
27Which THREE factors should an architect evaluate when determining Recovery Point Objective (RPO) and Recovery Time Objective (RTO) for an OCI database disaster recovery solution? (Choose three.)
28When designing an enterprise-grade disaster recovery architecture on OCI, which THREE practices are recommended to ensure a successful failover and minimize operational risk during a disaster event? (Choose three.)
29Which TWO OCI networking features help achieve high availability for applications accessing external services or on-premises datacenters? (Choose two.)
30Which THREE strategies can be implemented in OCI to mitigate the impact of a regional availability outage on a multi-tier web application? (Choose three.)
31When configuring an OCI Application Load Balancer (Layer 7) for high availability, which THREE settings or components must be properly configured? (Choose three.)
32When designing high availability for an Oracle RAC (Real Application Clusters) database deployed on OCI Exadata Database Service, which THREE architectural characteristics ensure fault tolerance and uptime? (Choose three.)
33Which TWO methods are valid for protecting OCI Compute instance boot volumes against data loss or corruption? (Choose two.)
34Which TWO features of OCI Object Storage contribute to its high durability and reliability for disaster recovery workflows? (Choose two.)
35Which THREE operational tasks should be included in a comprehensive disaster recovery runbook when utilizing OCI Full Stack Disaster Recovery for an enterprise application? (Choose three.)
36An OCI architect is setting up a disaster recovery environment where compute instances in the DR region need identical network configurations (private IPs, VNICs, security lists) to the primary region. Which OCI capability assists in deploying reproducible network topologies across regions?
37You are managing an Oracle Base Database Service instance configured with Data Guard in OCI. Due to a severe networking anomaly, the standby database falls significantly behind in applying redo. You decide to rebuild the standby database from an incremental backup taken on the primary. Which Recovery Manager (RMAN) command or process is used to synchronize the standby with the new incremental backup?
38When designing high availability for stateless web servers in OCI, which combination of services provides automatic scaling and load distribution across multiple Availability Domains?
39A financial services company runs its mission-critical application on OCI. The application uses a regional public subnet with a fleet of compute instances behind a flexible load balancer. The architect must ensure the application remains available even if an entire availability domain (AD) fails, without introducing cross-region latency for the primary traffic. What should the architect do to meet this requirement?
Be able to design a multi-region DR topology and correctly sequence Data Guard role transitions. The most important thing is distinguishing planned switchover from unplanned failover and knowing the required post-failover reinstate action.
The Courseiva 1Z0-997-26 question bank contains 39 questions in the High Availability And Disaster Recovery domain. Click any question to see the full explanation and answer breakdown.
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