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Oracle Cloud Infrastructure 2025 Architect Associate Sample Questions (Q42-Q47):

NEW QUESTION # 42
Which OCI service would you use to apply kernel security updates to all instances?

A. Data Safe
B. OS Management Service
C. Artifact Registry
D. Container Registry

Answer: B

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 # 43
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. 192.268.0.0/24
B. 0.0.0.0/0
C. 192.168.0.0/16
D. 10.0.0.0/8

Answer: C,D

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 # 44
Which is NOT a valid action within the Oracle Cloud Infrastructure (OCI) Block Volume service?

A. Restoring from a volume backup to a larger volume.
B. Attaching a block volume to an instance in a different availability domain.
C. Cloning an existing volume to a new, larger volume.
D. Expanding an existing volume in place with offline resizing.

Answer: B

Explanation:
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.
Reference:
Oracle Cloud Infrastructure Documentation: Block Volume Overview

NEW QUESTION # 45
How can an organization securely grant a third-party application access to specific OCI resources?

A. By implementing OAuth 2.0 with the application
B. By creating an IAM policy granting full access to the tenancy
C. By configuring the application to utilize Instance Principal
D. By sharing user credentials for an OCI administrator

Answer: C

Explanation:
To securely grant a third-party application access to specific Oracle Cloud Infrastructure (OCI) resources, the recommended approach is to configure the application to use Instance Principal. This method allows the application to authenticate directly with OCI services without needing to manage sensitive credentials like passwords or API keys.
Instance Principals: Enable compute instances to directly make API calls against OCI services, inheriting permissions through IAM policies. This setup is more secure than sharing user credentials, as it avoids hardcoding credentials within the application and leverages OCI's native security features.
Reference:
Oracle Cloud Infrastructure Documentation: Instance Principals

NEW QUESTION # 46
What happens to the performance level of a volume when it is detached from an instance?

A. The performance level is adjusted to Higher Performance.
B. The performance level remains unchanged.
C. The performance level is adjusted to Balanced.
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 # 47
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Paul Johnson Paul Johnson

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