1z0-1072-25 Oracle Cloud Infrastructure 2025 Architect Associate Free Practice Exam Questions (2025 Updated)

For a fully redundant connection from an on-premises data center to a VCN in the OCI us-ashburn-1 region, it is important to ensure high availability and fault tolerance. Here's how each option contributes to redundancy:

Option B: Two FastConnect Virtual Circuits:

FastConnect provides a dedicated, private connection with higher bandwidth and more consistent performance compared to a VPN. To achieve redundancy, you can configure two FastConnect circuits in the same region (us-ashburn-1), each terminated on diverse hardware on-premises. This setup ensures that even if one circuit or its associated hardware fails, the other circuit can maintain the connection. This ensures no single point of failure in the connectivity to OCI. Thus, option B is correct.

Option D: FastConnect and Site-to-Site VPN:

Another approach to redundancy is to have a mix of connection types. By setting up one FastConnect circuit and one Site-to-Site VPN, both terminating in the same region (us-ashburn-1), you create a diverse connection path. If the FastConnect connection fails, traffic can automatically route through the VPN connection, maintaining connectivity. This setup adds an extra layer of redundancy, making option D correct as well.

Incorrect Options:

Option A: Only configuring a Site-to-Site VPN from a single on-premises CPE does not provide redundancy because it involves just one connection path. If that connection or the CPE fails, there would be no fallback.

Option C: Configuring FastConnect circuits to different regions (us-ashburn-1 and us-phoenix-1) does not provide redundancy within a single region but rather across regions, which is not required for regional redundancy.

Relevant OCI Documentation:

OCI FastConnect Overview

Using Site-to-Site VPN and FastConnect for Redundancy

These references offer more detailed information on setting up redundant connections and the benefits of each connection type within OCI.

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Ephemeral principals in Oracle Cloud Infrastructure (OCI) refer to temporary security credentials granted to resources, such as compute instances, to enable them to interact with OCI services securely. These credentials have a limited lifespan and are typically used in situations where resources need to authenticate temporarily without the need for long-lived credentials.

Use Case: Ephemeral principals are often used for instance principals, allowing compute instances to make API calls without the need to manage long-term keys or credentials.

In Oracle Cloud Infrastructure (OCI), block volumes are designed to be highly flexible and can be used in various ways:

A. Restoring from a volume backup to a larger volume: This is supported and allows for resizing during the restoration process.

B. Cloning an existing volume to a new, larger volume: You can clone a block volume and specify a larger size for the new volume.

C. Expanding an existing volume in place with offline resizing: OCI allows you to increase the size of an existing block volume without needing to take it offline.

Option D is NOT valid because block volumes can only be attached to compute instances within the same availability domain. Cross-availability domain attachment of block volumes is not supported directly.

In Oracle Cloud Infrastructure (OCI), understanding how private IP addresses work is crucial for configuring network interfaces and managing instances within your Virtual Cloud Network (VCN).

Primary VNIC and Private IP Address:

When an instance is launched in OCI, it is attached to a Virtual Network Interface Card (VNIC). The primary VNIC, which is automatically created during the instance launch, is associated with a primary private IP address by default. This private IP address is essential for the instance to communicate within the VCN. The primary private IP address is automatically assigned and cannot be removed from the primary VNIC while the instance is running. This supports the statement C.

Additional Private IPs:

Contrary to statement B, each VNIC can indeed have multiple private IP addresses, but by default, the primary VNIC comes with only one primary private IP. You can manually add secondary private IPs if needed. However, the additional IPs are not assigned by default; hence, A is incorrect.

Public IP Association:

For instances requiring internet access, a public IP address can be optionally assigned to the private IP address if the instance is in a public subnet. This is critical for scenarios where an instance needs to communicate with the internet or external networks. This aligns with statement D.

Relevant OCI Documentation:

Oracle Cloud Infrastructure Networking Overview

VNICs and Private IPs

These references provide additional context and detail on how private IP addresses work within OCI and clarify the correct statements.

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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

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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.

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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.

To protect your VM instance from low-level threats, such as rootkits and bootkits, you should create a shielded instance in Oracle Cloud Infrastructure (OCI). Shielded instances are designed to provide enhanced security features, including:

Secure Boot: Ensures that the instance boots only with trusted software.

Measured Boot: Records boot metrics, allowing verification that the instance has not been tampered with.

Trusted Platform Module (TPM): Provides additional security through cryptographic functions.

These features help protect against low-level threats that could compromise the integrity of the instance at boot time.

In Oracle Cloud Infrastructure (OCI), Identity and Access Management (IAM) policies are used to control access to resources. The policy in option C is invalid because "any-user" is not a valid principal in OCI IAM policies. OCI policies can only grant permissions to groups or dynamic groups, but not to arbitrary users.

Here’s an explanation for each option:

A. Allow dynamic-group 'Default'/'FrontEnd' to manage instance-family in compartment Project-A: This is valid. It grants the dynamic group 'FrontEnd' the ability to manage instances within the Project-A compartment.

B. Allow group 'Default'/'A-Admins' to manage all-resources in compartment Project-A: This is valid. It provides full administrative access to all resources in the Project-A compartment for the 'A-Admins' group.

C. Allow any-user to inspect users in tenancy: This is invalid because OCI does not allow the use of "any-user" in policies. You must specify a valid group or dynamic group to define permissions.

D. Allow group 'Default'/'A-Developers' to create volumes in compartment Project-A: This is valid. It permits the 'A-Developers' group to create volumes in the Project-A compartment.

For reference:

OCI Policy Reference

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In Oracle Cloud Infrastructure (OCI), cross-region access is facilitated by configuring IAM policies that grant users or groups permissions to access resources in other regions. IAM policies in OCI are global, meaning they apply across all regions by default. However, an administrator can specifically configure these policies to allow or restrict access to resources in different regions.

Example: An administrator can write a policy that allows a user to manage compute instances in a specific region by including the region's name in the policy statement.

In Oracle Cloud Infrastructure (OCI) Identity and Access Management (IAM), administrator roles play a significant role in managing access:

Simplification of Access Management: Utilizing administrator roles allows you to simplify access management by eliminating the need to create complex IAM policies manually. These roles come with predefined permissions that cover common administrative tasks, reducing the effort needed to manage access controls.

Granular Control: While administrator roles provide a broad range of permissions, they may not offer the same level of granularity as custom policies.

Other Benefits:

Offer a wider range of permission combinations (A): While custom policies can offer more specific combinations, administrator roles are designed to cover a broad range of tasks.

Granting Access Outside Identity Domain (C): Administrator roles are generally scoped to their identity domain and do not provide cross-domain access.

Granular Control (D): Although administrator roles simplify management, custom policies are typically used when granular control over specific compartments or resources is needed.

Relevant OCI Documentation:

OCI IAM Roles Overview

This resource provides detailed information on how roles and policies are used in OCI to manage access.

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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.

The OCI Inter-Region Latency dashboard is useful for optimizing data transfer and backup strategies because it provides both current and historical views of latency snapshots between OCI regions. This information helps you understand the network performance between regions over time, allowing you to optimize the placement of resources and data transfer operations.

Optimization Use: By analyzing latency data, you can make informed decisions on where to store backups and how to efficiently transfer data across regions, potentially reducing costs and improving performance.

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.

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