Free Practice Questions for Oracle 1z0-1072-25 Exam

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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Instance principals in OCI allow compute instances to directly make API calls against OCI services without requiring a user account. To set up instance principals, the following steps are necessary:

A. Deploy the application and SDK: The application running on the instances must use the OCI SDK or CLI to make API calls.

B. Create a dynamic group: Define a dynamic group with matching rules to identify which instances can use the API permissions.

C. Create a policy: Write an IAM policy that grants the dynamic group the necessary permissions to access services.

Option D is NOT necessary because instances in a dynamic group use instance principals to authenticate and do not require Auth Tokens, which are used for user authentication with APIs.

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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To ensure secure communication between database servers and OCI Object Storage, you should use a Service Gateway. A Service Gateway enables instances in your VCN to privately access OCI services like Object Storage without traversing the public internet.

Security: The traffic between your database servers and Object Storage remains within the Oracle network, providing a secure and high-performance connection.

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.

A Dynamic Routing Gateway (DRG) in Oracle Cloud Infrastructure (OCI) is a virtual router that provides a path for private traffic between your on-premises network and your VCN, or between your VCN and other VCNs. The resources that can be attached to a DRG include:

A. Virtual Circuits: Used to establish a private connection between your on-premises data center and your VCN via Oracle’s FastConnect service.

D. Remote Peering Connections: Enables peering between VCNs located in different regions (Remote VCN Peering).

E. IPSec Tunnel: Facilitates secure VPN connections between your on-premises network and your OCI VCN.

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.

To calculate the monthly cost for 7 Petabytes (PB) of outbound data transfer at a rate of $0.0085 per GB in North America:

Calculation:

1 PB = 1,000,000 GB

7 PB = 7,000,000 GB

Cost = 7,000,000 GB * $0.0085/GB = $59,500.00

Thus, the cost for 7 PB of outbound data transfer per month is $59,500.00.

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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