Free 1Z0-1093-25 sample questions

Correct answer: The Security List associated with the DB System's subnet has an overly permissive ingress rule.

Security Lists control traffic at the subnet level. An ingress rule with a source CIDR that is too broad (e.g., the entire VCN CIDR block 10.0.0.0/16 instead of a specific application tier subnet) is the most common reason for unintended access from other subnets within the same VCN. This directly addresses the problem of intra-VCN exposure.

Correct answer: Implement an Object Storage lifecycle policy to transition backups from the Standard tier to the Archive tier after 30 days.

This is the most effective cost-saving strategy. Recent backups, which are more likely to be needed for operational recovery, remain in the instantly accessible Standard tier. Older backups are automatically moved to the much cheaper Archive tier for long-term retention. This perfectly balances accessibility for recent data with cost efficiency for archival data, directly addressing the company's requirements.

Correct answers: Oracle Data Guard in Maximum Availability mode.; A DB System provisioned in the remote DR region to act as the standby database.

Maximum Availability mode uses synchronous redo transport, ensuring zero data loss if the primary database fails, thus meeting the near-zero RPO requirement. It prioritizes data protection without halting the primary if the standby becomes unavailable.

Data Guard requires a standby database to which redo data is shipped. For cross-region DR, this standby database must be provisioned on a DB System in the designated DR region, ready to take over in a failover event.

Correct answer: A 2-node VM DB System with the Enterprise Edition - Extreme Performance, using Block Volume storage for the shared file system.

This configuration perfectly aligns with all requirements. A 2-node VM DB System supports RAC for high availability. The Enterprise Edition - Extreme Performance includes all database features, including RAC. VM DB Systems provide root access to the OS, allowing the bank's DBA team to apply custom hardening scripts and manage their own patching schedule. Using Block Volumes for shared storage is the standard and supported method for RAC on VM DB Systems. Data sovereignty is met by deploying the system in the required OCI region.

Correct answer: Bring Your Own License (BYOL)

The Bring Your Own License (BYOL) model is specifically designed for customers who already own Oracle Database software licenses. By choosing BYOL, they only pay for the OCI infrastructure compute, storage, and network resources they consume, allowing them to leverage their existing license investment and significantly reduce costs.

Correct answer: True

This statement is true. Base Database Service (for both VM and Bare Metal) is a user-managed service. While Oracle manages the underlying hardware and virtualization (in the case of VMs), the customer has root access to the guest OS and is fully responsible for all patching and maintenance of the software stack, including the OS, Grid Infrastructure, and Oracle Database.

Correct answer: Use the 'Create Clone' feature from the OCI Console on the source DB System.

The native 'Create Clone' feature in the OCI Console is the most efficient and recommended method. It leverages underlying storage snapshot capabilities and the latest backup to create a new, fully functional DB System with a copy of the database. This process is highly optimized for speed and minimizes performance impact on the source system.

Correct answer: Oracle Automatic Storage Management (ASM) using Block Volumes with the 'Higher Performance' setting.

This is the optimal configuration. ASM is the recommended storage manager for Oracle databases, providing better performance and manageability than LVM. The 'Higher Performance' setting for Block Volumes provides the highest IOPS (75 IOPS/GB, up to 300,000 IOPS per volume) and lowest latency available for network-attached block storage in OCI. This combination directly meets the requirement for maximum performance for a write-intensive workload.

Correct answer: In the automatic backup settings, select 'Custom Policy' and configure two separate retention periods: one for daily backups and one for monthly backups.

The OCI Console's automatic backup configuration allows for a 'Custom Policy'. This policy lets you define different retention periods for daily, weekly, monthly, and yearly backups. The DBA can set the daily retention to 14 days and the monthly retention to 12 months (one year) to meet the specified requirements directly through the console.

Correct answer: The database queries are returning a very large result set after predicate filtering, saturating the InfiniBand interconnect.

This is the correct diagnosis. A high 'bytes saved' indicates Smart Scan is working, but a high 'bytes returned' indicates that even after filtering, the remaining data being sent from the storage cells to the database nodes is very large. This suggests the queries are not selective enough (e.g., `SELECT * FROM sales WHERE year=2024`), causing a bottleneck on the interconnect network and overwhelming the DB nodes, which aligns with the observed slowdown.