1Z0-1072-26 Practice Test 20 — 15 Questions

Question 1

You have configured an Oracle Data Guard association between a primary Autonomous Database and a standby Autonomous Database. What happens to the standby database if the primary database experiences an unplanned regional outage?

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

Accepted Answer

You can perform a failover operation in the OCI Console to promote the standby database to primary.. In Autonomous Database Data Guard, if the primary goes down, you can manually initiate a role transition (switchover/failover) or rely on automatic failover depending on the configuration, promoting the standby to primary.

Answer

The standby database remains permanently read-only and cannot accept write transactions.

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The standby database automatically destroys itself and reprovisions in the primary region.

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Data Guard automatically switches back to the primary database via split-brain prevention algorithms.

Question 2

Which THREE factors should you consider when selecting an OCI Compute shape for an enterprise application? (Choose three.)

Accepted Answer

Specific workload requirements such as local NVMe storage, GPUs, or high-performance networking. When choosing a compute shape, consider processor architecture (AMD, Intel, ARM), workload requirements (GPU, HPC, Dense I/O, general purpose), and whether flexible sizing is needed for exact OCPU/RAM requirements.

Answer

The requirement that all compute instances must use public IP addresses by default

Answer

Whether the compute instance can be converted into an Autonomous Database instance

Question 3

Which OCI service should you use if you want to store and manage custom VM disk images so that they can be deployed across multiple regions easily?

Accepted Answer

OCI Custom Images. OCI Custom Images service allows you to store images and copy them across regions for compute deployments.

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OCI Block Volume Backups

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OCI Object Storage Archival Tier

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OCI File Storage Service

Question 4

Which TWO tasks can an administrator perform when managing database homes in Oracle Base Database Service? (Choose two.)

Accepted Answer

Apply Database Updates (Database Software Patches) to the DB home.. Database homes in Base Database Service allow administrators to apply quarterly database patches (RU/RUR) and create multiple databases using the same software version.

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Modify the underlying physical CPU hardware model of the hypervisor.

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Delete the DB home while keeping all associated databases running unaffected.

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Convert the database home into an Autonomous Container Database.

Question 5

What is the primary function of an OCI dynamic group?

Accepted Answer

To allow OCI resources, such as compute instances, to be authenticated and authorized as principals in IAM policies.. Dynamic groups allow cloud resources (such as compute instances) to be treated as principal actors, enabling them to make API calls to other OCI services without hardcoding credentials.

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To automatically scale compute instances based on CPU utilization metrics.

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To automatically create compartments when new projects are initiated.

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To group human users together based on their department or job function.

Question 6

Your security team has implemented a policy that restricts access to Object Storage to requests originating from a specific dynamic group. However, a developer test script fails with a 403 Forbidden error even though the script runs on an instance in that dynamic group. Upon inspecting audit logs, you find that the API call was made using user credentials rather than instance principals. Why did the authorization fail?

Accepted Answer

Dynamic group policies apply to instance principal or resource principal authentication, not API calls made using individual user credentials.. Instance principals and dynamic groups authenticate the instance itself as a principal, whereas API calls signed with user credentials evaluate permissions against the user, not the dynamic group.

Answer

The compute instance must have port 443 blocked in its security list for instance principals to function.

Answer

Object Storage buckets do not support dynamic group access control.

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User credentials override dynamic group policies entirely.

Question 7

You are managing an OKE cluster and need to perform a major Kubernetes version upgrade. You want to minimize application downtime during the upgrade process of worker nodes. What feature should you configure on your node pools during upgrade?

Accepted Answer

Node pool rolling update settings with maxSurge and maxUnavailable configured. When upgrading OKE node pools, you can configure maximum surge and maximum unavailable parameters to perform rolling node upgrades with zero application downtime.

Answer

Pausing the Kubernetes API server while upgrading individual node kernels via SSH

Answer

Simultaneous termination of all worker nodes to force quick cluster recreation

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Converting all worker nodes to serverless container instances

Question 8

Which THREE actions occur during a Data Guard switchover operation for an Oracle Base Database System?

Accepted Answer

The standby database is promoted to the primary role.. During a switchover, roles are swapped gracefully without data loss, the primary becomes a standby, and the standby becomes the primary.

Answer

The database files are permanently deleted from the original primary server.

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The Virtual Cloud Network (VCN) peering connection is automatically deleted.

Question 9

Your company has merged with another organization. You need to configure cross-tenancy access so that Tenancy B can read Object Storage buckets in Tenancy A. You have created an endorsement policy in Tenancy A. What exact syntax must be used for the commitment policy in Tenancy B?

Accepted Answer

Define group Partners in Tenancy B: endorse group Partners to read objects in tenancy TenancyA. A commitment policy in the source tenancy uses the 'endorse' verb along with the target tenancy OCID.

Answer

Define group Partners in Tenancy B: accept group Partners to read objects in tenancy TenancyA

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Define group Partners in Tenancy B: permit group Partners to read objects in compartment Root

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Define group Partners in Tenancy B: allow group Partners to access tenancy TenancyA

Question 10

Your development team needs to perform automated regression testing against a production copy of an Autonomous Transaction Processing (ATP) database. Which feature allows you to create a point-in-time, space-efficient copy of the production database instantly?

Accepted Answer

Autonomous Database Clone (Thin Clone). Autonomous Database Clones allow you to create either a full clone or a metadata-only thin clone instantly for development and testing purposes.

Answer

Cross-Region Object Storage Export

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Autonomous Database Data Guard

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Oracle RMAN Duplicate Database

Question 11

You are managing an Oracle Base Database System and need to secure data at rest by using your own encryption keys rather than Oracle-managed keys. Which OCI service must you integrate with the database?

Accepted Answer

OCI Vault (Key Management Service). Customer-managed encryption keys for Oracle databases in OCI are managed using OCI Vault (Key Management Service).

Answer

Oracle Cloud Guard

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Identity and Access Management (IAM) Policies

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OCI Object Storage Server-Side Encryption

Question 12

Which THREE operations can be performed on an Oracle Base Database System from the OCI Console?

Accepted Answer

Scale storage size. From the OCI Console, you can scale storage, patch database homes, and create manual backups.

Answer

Modify the operating system kernel source code

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Directly modify Oracle internal data dictionary tables

Question 13

Which TWO mechanisms are used by OCI Database backup services to ensure data consistency and integrity during backups of Oracle Base Database Systems?

Accepted Answer

Oracle Recovery Manager (RMAN) backup validation and incremental backup integration. Database backups use Oracle RMAN for physical block-level consistency and OCI Block Volume snapshots for disk-level consistency.

Answer

Third-party FTP mirroring of the /etc/passwd file

Answer

Manual SQL*Plus file copy commands while the database is in read-write mode

Answer

Automatic conversion of all database files to CSV format prior to backup

Question 14

You manage an Autonomous Database instance and want to configure Auto-Scaling for storage. What is the behavior of storage auto-scaling when enabled?

Accepted Answer

It automatically expands storage space as needed without user intervention, up to three times the base storage size.. When storage auto-scaling is enabled, Autonomous Database automatically increases storage space as your data grows, up to 3 times the initial allocated size.

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It scales down storage during low usage windows to reduce monthly cloud billing.

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It automatically deletes old backups to free up block storage when thresholds are reached.

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It automatically adds OCPUs whenever storage utilization exceeds 80 percent.

Question 15

You are troubleshooting a slow-running query on an Exadata Cloud Service database. You suspect that smart scan is not being utilized by the storage cells. Which Exadata feature enables offloading SQL processing operations like filtering and projections directly to the storage servers?

Accepted Answer

Exadata Smart Scan (Storage Offload). Exadata Smart Scan (Storage Index and Offload processing) offloads database query processing tasks from the database compute nodes to the Exadata storage cells.

Answer

Oracle Database In-Memory Column Store

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Hybrid Columnar Compression (HCC)

Answer

Automatic Storage Management (ASM) Mirroring