1Z0-997-26 Practice Test 3 — 10 Questions

Question 1

You 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?

Choose an answer to begin — your selection is scored in the full session.

Accepted Answer

Cross-Region Autonomous Data Guard. Autonomous Database supports cross-region Data Guard / Autonomous Data Guard, allowing you to configure a remote standby database with automatic failover capabilities.

Answer

OCI Block Volume cross-region replication

Answer

Manual RMAN incremental backups copied to Object Storage in the remote region

Answer

Database Express Export/Import scheduled via cron

Question 2

You are configuring an OCI API Gateway deployment to secure a backend microservice running on OKE. You need to implement token-based authentication where the API Gateway validates a JSON Web Token (JWT) issued by an external identity provider before routing the request. Where should you configure this validation?

Accepted Answer

Within an OCI Functions-based custom authorizer or native JWT validation block in the API Gateway deployment specification.. OCI API Gateway supports custom authenticators and native JWT validation policies directly on the deployment routes to validate authorization headers before forwarding requests to backends.

Answer

Inside an OCI Events rule matching the incoming HTTP request payload.

Answer

By attaching an OCI IAM policy to the target VCN subnet route table.

Answer

Inside the Ingress Controller configuration manifest deployed on the OKE cluster.

Question 3

Which TWO architectural best practices should you follow when designing cloud-native microservices on Oracle Container Engine for Kubernetes (OKE) to ensure high availability and resilience? (Choose two.)

Accepted Answer

Distribute OKE worker node pools across multiple Fault Domains or Availability Domains.. High availability on OKE requires spreading worker nodes across multiple Availability Domains (ADs) or Fault Domains (FDs), and implementing Kubernetes Pod Disruption Budgets (PDBs) to prevent downtime during cluster upgrades.

Answer

Deploy all microservices into a single flat Kubernetes namespace to maximize intra-cluster communication speed.

Answer

Store all application state and user sessions locally on the ephemeral container root filesystem.

Answer

Use NodePorts for all external microservice access directly bypassing the OCI Load Balancer.

Question 4

When 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.)

Accepted Answer

OCI Load Balancers and Network Load Balancers. FSDR supports orchestration of compute instances, database systems (Base DB, Exadata), and OCI Load Balancers / Network Load Balancers.

Answer

OCI Key Management service Vault encryption keys

Answer

OCI Identity and Access Management (IAM) global policies

Question 5

An 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?

Accepted Answer

Asynchronous cross-region block volume replication. OCI Block Volume provides asynchronous cross-region volume replication for both boot and block volumes, enabling disaster recovery without manual backup-and-restore steps.

Answer

OCI File Storage cross-mount replication policies

Answer

Manual Object Storage export of raw volume blocks using dd commands

Answer

Real-time synchronous block volume mirroring via software RAID

Question 6

You are designing a serverless event-driven architecture on OCI using OCI Events, OCI Notifications, and OCI Functions. Which THREE actions are valid capabilities when integrating these services? (Choose three.)

Accepted Answer

OCI Notifications can publish messages to email, PagerDuty, or HTTPS endpoints triggered by service alarms or events.. OCI Events can trigger OCI Functions directly, OCI Notifications can publish messages to email/HTTPS endpoints, and OCI Functions can be invoked synchronously or asynchronously via OCI Events.

Answer

OCI Functions can execute indefinitely without any timeout restrictions up to 24 hours.

Answer

An OCI Function can be configured to invoke an OCI Database directly over a public IP without any VCN security configurations.

Question 7

Which THREE strategies can be implemented in OCI to mitigate the impact of a regional availability outage on a multi-tier web application? (Choose three.)

Accepted Answer

Deploying application tiers across two OCI regions with DNS Traffic Management health checks for automated failover. Mitigating regional outages requires multi-region deployments with DNS traffic steering, database replication (Data Guard), and cross-region storage/compute readiness.

Answer

Relying on a single Availability Domain deployment with automated daily backups

Answer

Running all database write operations simultaneously against both regions with synchronous multi-master locking over public internet

Question 8

You are planning to migrate an Oracle Database to OCI using Zero Downtime Migration (ZDM). Which underlying Oracle migration technology does ZDM orchestrate behind the scenes for large databases requiring physical migration?

Accepted Answer

Oracle RMAN and Oracle Data Guard. OCI Zero Downtime Migration (ZDM) orchestrates native Oracle migration tools such as RMAN, Data Guard, and Data Pump depending on the workflow chosen (physical vs logical).

Answer

OCI Object Storage lifecycle policies exclusively

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Third-party ETL pipelines and CSV flat file generation

Answer

MySQL Enterprise Backup and InnoDB replication

Question 9

An 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?

Accepted Answer

An OCI Public Load Balancer configured with backend sets spanning multiple ADs.. An OCI Public Load Balancer is regional, meaning it spans all ADs in a region and can distribute traffic across backend servers located in different ADs, ensuring high availability.

Answer

An OCI Dynamic Routing Gateway (DRG) configured with equal-cost multi-path routing.

Answer

A Network Load Balancer restricted to a single Availability Domain subnet.

Answer

A primary Local Peering Gateway (LPG) connected to multiple VCNs.

Question 10

An 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?

Accepted Answer

Client connection strings remain valid; applications reconnect, and the regional endpoint automatically routes traffic to the new primary.. Autonomous Database uses regional service names and client credential wallets (tnsnames.ora) that automatically update or resolve to the active primary region during a switchover/failover, though client reconnection is required.

Answer

The database IP addresses change, requiring manual DNS A-record updates in OCI DNS.

Answer

You must manually regenerate new wallet zip files and redeploy them to all application servers.

Answer

Client applications must be rewritten to use hardcoded IP addresses instead of TNS names.