The Best Oracle 1Z0-1072-25 Study Guides and Dumps of 2026
Top Oracle 1Z0-1072-25 Exam Audio Study Guide! Practice Questions Edition
NEW QUESTION # 16
What would happen if you choose not to proactively reboot the instance before the scheduled maintenance due date?
- A. You will receive another notification to reboot within the next 14 days.
- B. The instance will get terminated.
- C. You will receive another notification to reboot within the next 7 days.
- D. The instance is either reboot-migrated or rebuilt in place for you.
Answer: D
Explanation:
In OCI, if you choose not to proactively reboot your instance before the scheduled maintenance due date, the system will handle the maintenance automatically to ensure that the instance remains operational.
Reboot-Migration or Rebuild in Place: If you don't reboot the instance yourself, OCI will automatically perform a reboot-migration or rebuild in place for the instance. This ensures that the instance is moved to new hardware or updated without your intervention, maintaining uptime and applying necessary updates or fixes.
Impact on Instance: The exact action taken (reboot-migration or rebuild in place) depends on the type of maintenance required. However, either action will temporarily interrupt the instance, typically involving a reboot, but the instance's data and configuration will be preserved.
Relevant OCI Documentation:
Instance Maintenance
OCI Maintenance Events
These references discuss the procedures and options available for handling instance maintenance in OCI.
NEW QUESTION # 17
By default, OCI IAM policies follow the principle of least privilege. What does this principle mean in the context of policy creation?
- A. Policies should be identical for all users within a tenancy.
- B. Policies should grant all possible permissions to simplify access control.
- C. Policies should provide only the minimum set of permissions required for users to perform their tasks effectively.
- D. Policies should be written in a complex and technical manner to enhance security.
Answer: C
Explanation:
The principle of least privilege is a security best practice that dictates that users should only be granted the minimum set of permissions necessary to perform their tasks. This principle helps to minimize the risk of accidental or malicious actions that could compromise security.
IAM Policies in OCI: When creating IAM policies in OCI, you should carefully evaluate the required permissions and only grant those that are absolutely necessary for the users or groups to perform their specific roles. This helps to reduce the attack surface and prevent unauthorized access to sensitive resources.
Reference:
Oracle Cloud Infrastructure Documentation: Identity and Access Management (IAM) Best Practices
NEW QUESTION # 18
What would be the total meteredBytes shown by the File Storage service after the hourly update cycle is complete when you overwrite 0.5 GB of a 1 GB file?
- A. 1 GB
- B. 0.5 GB
- C. 2.5 GB
- D. 1.5 GB
Answer: D
Explanation:
In Oracle Cloud Infrastructure (OCI) File Storage, when you overwrite a portion of a file, the service does not immediately reclaim the space occupied by the previous version of the file. The total meteredBytes reflects both the original data and the new data written.
Scenario Explanation: You start with a 1 GB file. When you overwrite 0.5 GB of this file, the file system retains both the 0.5 GB of the original file and the new 0.5 GB you wrote.
Calculation: The original 1 GB file contributes 1 GB to meteredBytes. When 0.5 GB is overwritten, the total usage becomes 1.5 GB (1 GB original + 0.5 GB new).
Thus, after the hourly update cycle, the total meteredBytes shown by the File Storage service will be 1.5 GB.
Reference:
Oracle Cloud Infrastructure Documentation: File Storage Service Overview
NEW QUESTION # 19
Which statement is true about instance configurations and instance pools in OCI?
- A. You can delete an instance configuration if it is associated with an instance pool.
- B. You can only delete an instance configuration if it is not associated with any instance pool.
- C. An instance pool can have multiple instance configurations associated with it.
- D. You cannot reuse the same instance configuration for multiple instance pools.
Answer: B
NEW QUESTION # 20
Which of the following is a valid RFC 1918 CIDR prefix that can be used for creating an Oracle Cloud Infrastructure (OCI) Virtual Cloud Network (VCN)?
- A. 0.0.0.0/0
- B. 192.168.0.0/16
- C. 10.0.0.0/8
- D. 192.268.0.0/24
Answer: B,C
Explanation:
RFC 1918 defines IP address ranges that are reserved for private networks, which cannot be routed on the public internet. In Oracle Cloud Infrastructure (OCI), these private IP address ranges can be used to create Virtual Cloud Networks (VCNs). The valid RFC 1918 CIDR prefixes include:
192.168.0.0/16: A private IP range often used in home networks.
10.0.0.0/8: A large private IP range commonly used in enterprise networks.
Invalid Options:
B . 0.0.0.0/0: This CIDR represents all IP addresses and is not a valid private IP range.
C . 192.268.0.0/24: This is not a valid IP address range as the octet "268" is outside the allowable range of 0-255.
Reference:
Oracle Cloud Infrastructure Documentation: VCN Overview
RFC 1918: Address Allocation for Private Internets
NEW QUESTION # 21
Which IAM Identity Domain type should you create for a full-featured Identity-as-a-Service (IDaaS) solution?
- A. Oracle Apps Premium
- B. Free
- C. External User
- D. Premium
Answer: D
Explanation:
In Oracle Cloud Infrastructure (OCI), when you need a full-featured Identity-as-a-Service (IDaaS) solution, the appropriate Identity Domain type to create is Premium.
Premium Identity Domain: This option provides a comprehensive set of identity and access management (IAM) capabilities, including advanced security features, identity governance, and support for enterprise-grade integrations. It supports managing user identities, multifactor authentication, and various other identity services required for a robust IDaaS solution.
Other Options:
External User: This is a limited domain type typically used for managing users who only need access to specific external services.
Free: This domain type offers limited features and is not intended for full-featured enterprise IAM requirements.
Oracle Apps Premium: This is tailored for integrating with Oracle applications but does not offer the broad capabilities of the Premium option.
Relevant OCI Documentation:
Oracle Identity Domains Overview
This documentation explains the various identity domain types and their use cases within OCI.
NEW QUESTION # 22
Which policy would you write to provide admin access to all three of your existing admin groups for a shared Test compartment?
- A. Allow group any-group to manage all-resources in compartment Test where request.principal.group.tag.EmployeeGroup.Role='Admin'
- B. Allow dynamic-group to manage all-resources in compartment Test where request.principal.group.tag.EmployeeGroup.Role='Admin'
- C. Allow all-group to manage all-resources in compartment Test where request.principal.group.tag.EmployeeGroup.Role='Admin'
- D. Allow any-user to manage all-resources in compartment Test where request.principal.group.tag.EmployeeGroup.Role='Admin'
Answer: C
Explanation:
In Oracle Cloud Infrastructure (OCI), policies are written to define permissions for user groups. The correct policy to provide admin access to all three existing admin groups in a shared compartment (in this case, the "Test" compartment) would be:
"Allow all-group to manage all-resources in compartment Test where request.principal.group.tag.EmployeeGroup.Role='Admin'".
"Allow all-group": Grants access to all groups.
"to manage all-resources": Specifies full access permissions (manage includes all CRUD operations).
"in compartment Test": Limits the scope of the policy to the "Test" compartment.
"where request.principal.group.tag.EmployeeGroup.Role='Admin'": Adds a condition to restrict this admin-level access to only groups tagged with the role 'Admin'.
This policy ensures that only users in the groups tagged as Admin will be allowed to manage resources in the Test compartment, making it the most suitable choice for providing admin access.
For reference:
OCI Policy Syntax Documentation
NEW QUESTION # 23
Which Traffic Management Steering Policy facilitates the distribution of DNS traffic based on the geographical location of end users?
- A. Geolocation Steering
- B. ASN Steering
- C. IP Prefix Steering
- D. Proximity Steering
Answer: A
Explanation:
Geolocation Steering in OCI's Traffic Management Steering Policy allows you to distribute DNS traffic based on the geographical location of the end users. This method helps direct users to the nearest regional endpoint, optimizing latency and improving user experience.
Use Cases: Geolocation Steering is commonly used to deliver region-specific content, comply with data residency laws, or optimize service performance by directing traffic to the closest available servers.
Reference:
Oracle Cloud Infrastructure Documentation: Traffic Management Steering Policies
NEW QUESTION # 24
Which statement is true about File System Replication in Oracle Cloud Infrastructure (OCI)?
- A. Only a file system that has been exported can be used as a target file system.
- B. You can replicate the data in one file system to another file system only in the same region.
- C. You can replicate the data in one file system to another file system in the same region or a different region.
- D. You cannot specify a replication interval when you create the replication resource.
Answer: C
Explanation:
File System Replication in Oracle Cloud Infrastructure (OCI) allows you to replicate data from one file system to another either within the same region or across different regions. This capability is particularly useful for disaster recovery, data protection, and global data distribution scenarios.
Cross-Region Replication: The replication feature enables you to create a copy of your file system in a different region, ensuring that your data is available even in the event of a regional failure.
Same-Region Replication: You also have the option to replicate data within the same region, which can be useful for scenarios such as high availability and local backups.
Reference:
Oracle Cloud Infrastructure Documentation: File System Replication
NEW QUESTION # 25
Which OCI service would you use to apply kernel security updates to all instances?
- A. Container Registry
- B. Data Safe
- C. OS Management Service
- D. Artifact Registry
Answer: C
Explanation:
The OS Management Service in Oracle Cloud Infrastructure (OCI) is designed to manage and maintain the operating systems of your compute instances. This service allows you to apply kernel security updates, manage package installations, and monitor the status of updates across all instances in your environment.
Kernel Security Updates: With OS Management Service, you can automate and schedule kernel updates, ensuring that all instances are up-to-date with the latest security patches. This helps maintain the security and integrity of your infrastructure without needing to manually update each instance.
Other Options:
Container Registry: Used for storing and managing container images, not for applying OS updates.
Data Safe: A service focused on database security, not applicable for OS-level updates.
Artifact Registry: A repository for storing and managing software artifacts, not related to OS management.
Relevant OCI Documentation:
OS Management Service Overview
This documentation provides details on how to use OS Management Service to handle kernel security updates and other OS-level management tasks.
NEW QUESTION # 26
Which statement is NOT true about the Oracle Cloud Infrastructure (OCI) Object Storage service?
- A. Object Storage resources can be shared across tenancies.
- B. Object Versioning is enabled at the namespace level.
- C. Object lifecycle rules can be used to archive or delete objects.
- D. Immutable option for data stored in Object Storage can be set via retention rules.
Answer: A
Explanation:
Oracle Cloud Infrastructure (OCI) Object Storage is a scalable, highly durable service that allows you to store any type of data in a secure and cost-effective manner. The correct and incorrect statements regarding OCI Object Storage are as follows:
A . Immutable Option: You can indeed set an immutable option for data in Object Storage using retention rules. This feature ensures that once data is written, it cannot be modified or deleted until the retention period expires, making it ideal for regulatory compliance.
C . Object Lifecycle Rules: Object lifecycle policies allow you to automate the archiving or deletion of objects based on their age or other criteria, helping manage storage costs and data retention efficiently.
D . Object Versioning: Versioning is enabled at the bucket level, not the namespace level. However, once enabled for a bucket, it helps retain, retrieve, and restore every version of every object stored in that bucket.
B . Object Storage Sharing Across Tenancies: This statement is not true. OCI Object Storage buckets and objects are specific to a tenancy and cannot be shared across different tenancies directly. Access to Object Storage resources is controlled within a single tenancy through IAM policies.
Relevant OCI Documentation:
OCI Object Storage Overview
Object Lifecycle Management
These references provide details on how Object Storage functions and the features available.
NEW QUESTION # 27
Which image option allows you to create identical instances with minimal effort?
- A. Create a custom image
- B. Use Oracle-provided images
- C. Select an image from the OCI Marketplace
- D. Bring your own image
Answer: A
Explanation:
When you need to create identical instances with minimal effort, creating a custom image is the best option.
Custom Images: A custom image captures the exact configuration of an instance, including the OS, software, configurations, and data. By using a custom image, you can easily replicate the same setup across multiple instances, ensuring consistency and reducing the need for manual configuration each time.
Other Options:
Bring Your Own Image: This allows you to import your custom OS image into OCI, but it's more suited for cases where you are migrating from another environment.
Select an Image from the OCI Marketplace: This provides pre-configured images from Oracle or third parties, but they may require additional setup to match your specific requirements.
Use Oracle-Provided Images: These are basic images provided by Oracle, which may not include the specific customizations you need.
Relevant OCI Documentation:
Custom Images Overview
This resource explains how to create and use custom images for quickly deploying identical instances.
NEW QUESTION # 28
A financial firm is designing an application architecture for its online trading platform that should have high availability and fault tolerance. What should the architect do to avoid any costly service disruptions and ensure data durability?
- A. Copy the Object Storage bucket to a block volume.
- B. Create a replication policy to send data to a different bucket in another OCI region.
- C. Create a new Object Storage bucket in another region and configure recycle policy to move data every 5 days.
- D. Create a lifecycle policy to regularly send data from the Standard to Archive storage.
Answer: B
Explanation:
For an online trading platform requiring high availability and fault tolerance, it's critical to ensure data durability and avoid any costly service disruptions. In Oracle Cloud Infrastructure (OCI), Object Storage is often used to store critical data, such as transaction logs or user data, due to its scalability, durability, and reliability.
Option B is the most suitable approach for ensuring data durability and availability across regions. Here's why:
Cross-Region Replication (CRR): OCI offers a feature called Cross-Region Replication for Object Storage. This feature allows you to automatically and asynchronously replicate objects in a bucket from one OCI region to another. This setup ensures that even if one region experiences a failure, the data is still available in another region, thereby meeting the requirements for high availability and fault tolerance.
Data Durability: By replicating data to another region, you protect against regional outages. OCI guarantees 99.95% availability for replicated data, which is critical for a financial firm's trading platform where data consistency and durability are paramount.
Disaster Recovery: With data replicated in another region, the trading platform can quickly switch to using the data in the secondary region in case of a disaster in the primary region. This setup significantly reduces recovery time objectives (RTO) and ensures business continuity.
Reference:
Oracle Cloud Infrastructure Documentation: Cross-Region Replication for Object Storage Oracle Whitepaper: High Availability and Disaster Recovery in Oracle Cloud Infrastructure Explanation of Incorrect Options:
Option A: Creating a new Object Storage bucket in another region and configuring a recycle policy to move data every 5 days does not provide real-time data availability or the fault tolerance required for a financial application. Recycle policies are intended for managing the lifecycle of data, not for high availability or disaster recovery.
Option C: While lifecycle policies are useful for moving less frequently accessed data to a more cost-effective storage tier (e.g., from Standard to Archive), they do not address cross-region redundancy or real-time availability, which are critical for this use case.
Option D: Copying an Object Storage bucket to a block volume is not a recommended practice for ensuring data durability and fault tolerance. Block volumes are used for persistent storage attached to compute instances, and copying object storage data to block volumes does not achieve the same level of redundancy and cross-region availability as replication policies.
Thus, Option B is the correct and most efficient method for ensuring high availability and fault tolerance in this scenario.
NEW QUESTION # 29
Which TWO statements are NOT correct regarding the Oracle Cloud Infrastructure (OCI) burstable instances?
- A. Burstable instances cost less than regular instances.
- B. If the instance's average CPU utilization is below the baseline, it can burst above the baseline.
- C. Burstable instances are charged according to the baseline OCPU.
- D. Baseline utilization is a fraction of each CPU core.
Answer: A,C
Explanation:
The following statements about OCI burstable instances are NOT correct:
A . Burstable instances cost less than regular instances: This is incorrect because burstable instances are not necessarily cheaper; the cost depends on the baseline utilization. While they allow for cost efficiency when running at a lower CPU baseline, they can become more expensive if frequently bursting above the baseline.
B . Burstable instances are charged according to the baseline OCPU: This is incorrect because burstable instances are billed based on actual OCPU usage, which includes both baseline and burst usage. If an instance frequently operates above its baseline, the cost will reflect this higher usage.
Correct Concepts:
C . Burstable instances can temporarily use more CPU than their baseline if the average CPU utilization is below the baseline.
D . Baseline utilization is a fraction of each CPU core, which determines the level of consistent performance available without bursting.
Reference:
Oracle Cloud Infrastructure Documentation: Burstable Instances
NEW QUESTION # 30
Why was SSH still possible after port 22 was removed from the Security Lists?
- A. The VNIC of that compute instance is attached to a Cluster Network.
- B. The VCN where that compute instance resides still has a route rule.
- C. The VNIC of that compute instance is attached to a Network Security Group (NSG).
- D. The VCN where that compute instance resides still has an Internet Gateway.
Answer: C
Explanation:
Even after removing port 22 from the Security Lists, SSH was still possible because the Virtual Network Interface Card (VNIC) of the compute instance is attached to a Network Security Group (NSG).
NSGs: NSGs provide a more flexible and granular way to manage security rules compared to Security Lists. They allow you to apply security rules directly to VNICs associated with resources such as compute instances. If an NSG allows traffic on port 22, SSH will still be possible, regardless of the Security List settings.
Reference:
Oracle Cloud Infrastructure Documentation: Security Lists and Network Security Groups
NEW QUESTION # 31
What happens to the performance level of a volume when it is detached from an instance?
- A. The performance level remains unchanged.
- B. The performance level is adjusted to Balanced.
- C. The performance level is adjusted to Higher Performance.
- D. The performance level is adjusted to Lower Cost (0 VPUs/GB).
Answer: D
Explanation:
In Oracle Cloud Infrastructure (OCI), when a block volume is detached from an instance, its performance level is automatically adjusted to the "Lower Cost" tier, which provides 0 VPUs (Volume Performance Units) per GB. This adjustment helps reduce costs when the block volume is not actively being used by a compute instance.
Key Points:
Volume Performance Levels: OCI offers various performance tiers for block volumes, including "Higher Performance," "Balanced," and "Lower Cost." These tiers determine the level of IOPS (Input/Output Operations Per Second) and throughput available to the volume.
Automatic Adjustment: When a block volume is detached from an instance, OCI automatically optimizes the cost by switching the volume to the "Lower Cost" performance tier. This tier offers minimal performance, suitable for data that is not actively accessed.
Cost Management: This automatic adjustment is beneficial for managing costs, as it prevents users from incurring unnecessary charges for higher performance levels when the volume is not in use.
Reference:
Oracle Cloud Infrastructure Documentation: Block Volume Performance Levels
NEW QUESTION # 32
Which statement is true about pre-authenticated requests?
- A. You cannot edit a pre-authenticated request.
- B. Deleting a pre-authenticated request does not revoke access.
- C. Pre-authenticated requests can be used to delete buckets.
- D. You need to provide your OCI credentials to the partner company.
Answer: A
Explanation:
In Oracle Cloud Infrastructure (OCI), pre-authenticated requests (PARs) allow users to grant access to specific objects in Object Storage without requiring the recipient to have an OCI account or credentials. This feature is useful for sharing objects securely without exposing broader access.
Cannot Edit a PAR: Once a pre-authenticated request is created, you cannot edit it. If you need to change the settings, such as the expiration date or the object being shared, you must delete the existing PAR and create a new one.
Other Statements:
Deleting a PAR does indeed revoke access immediately, contradicting option B.
Providing OCI credentials (C) is not required for using PARs. The purpose of PARs is to avoid sharing credentials.
Deleting Buckets (D): PARs are designed for accessing objects, not for administrative actions like deleting buckets.
Relevant OCI Documentation:
Managing Pre-Authenticated Requests
This reference outlines the features and limitations of pre-authenticated requests, including the inability to edit them once created.
NEW QUESTION # 33
How will moving a database instance to a different compartment impact user access?
- A. Compartments are not covered by IAM policies.
- B. Access will be revoked for all users.
- C. IAM policies are not tied to compartments.
- D. Compartments prevent resource movement.
Answer: B
Explanation:
In Oracle Cloud Infrastructure (OCI), when you move a database instance to a different compartment, the following impact on user access occurs:
Impact of Moving Resources: When you move a resource, like a database instance, to a different compartment, the IAM policies that grant access to that resource in the original compartment no longer apply. This effectively revokes access for users or groups unless equivalent policies are in place in the new compartment.
Restoring Access: To restore access, you would need to create new IAM policies in the destination compartment that grant the necessary permissions to the users or groups who need access.
Relevant OCI Documentation:
Managing Compartments
Moving Resources
These resources provide detailed steps on how compartment changes impact resource access and management.
NEW QUESTION # 34
......
Oracle 1Z0-1072-25 Exam Syllabus Topics:
| Topic | Details |
|---|---|
| Topic 1 |
|
| Topic 2 |
|
| Topic 3 |
|
| Topic 4 |
|
Valid 1Z0-1072-25 Exam Updates - 2026 Study Guide: https://www.examboosts.com/Oracle/1Z0-1072-25-practice-exam-dumps.html
1Z0-1072-25 Certification - The Ultimate Guide: https://drive.google.com/open?id=1JWLALpZvKuqz3iIfysSOdODjhDXwaNwG