In OCI File Storage, snapshots are point-in-time, read-only copies of a file system that do not immediately consume additional storage beyond the space needed to track changes.

Incorrect Statement: The statement that a new snapshot consumes more storage even if nothing has changed is incorrect. Snapshots are space-efficient; they only consume additional storage as changes are made to the file system after the snapshot is taken. If no changes are made between snapshots, the storage consumption remains minimal.

Correct Statements:

B . Before cloning a file system, at least one snapshot must exist, as the clone operation relies on this snapshot to create a copy.

C . Snapshots are accessible under the .snapshot directory, allowing users to view and restore files from specific snapshots.

D . Snapshots provide a consistent, point-in-time view of the file system, ensuring data integrity.

Oracle Cloud Infrastructure Documentation: Managing File System Snapshots

The OCI Private Network Load Balancer supports multiple protocols for managing traffic efficiently across your instances within a private subnet. Specifically, it supports:

UDP (User Datagram Protocol): Commonly used for applications that require fast, connectionless communication, such as video streaming or DNS services.

TCP (Transmission Control Protocol): A reliable, connection-oriented protocol, widely used for web traffic and other applications requiring data integrity.

HTTP (Hypertext Transfer Protocol): Frequently used for web traffic, it is an application-layer protocol built on top of TCP and enables communication between web browsers and servers.

The combination of these protocols allows the OCI Network Load Balancer to manage diverse workloads, including web services and real-time applications.

For reference:

OCI Load Balancer Documentation

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.

Instance configurations and instance pools are used in OCI to manage groups of instances collectively:

Deleting Instance Configurations: An instance configuration cannot be deleted if it is currently associated with an instance pool. You must first disassociate or delete the instance pool before you can delete the instance configuration.

Reusing Instance Configurations: You can reuse the same instance configuration for multiple instance pools, which allows you to deploy identical groups of instances in different contexts.

Instance Pools: A single instance pool can only be associated with one instance configuration, ensuring uniformity across the instances in the pool.

Relevant OCI Documentation:

Instance Configuration Overview

Instance Pools Overview

These references explain how to manage instance configurations and pools, including the rules for deletion.

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.

Oracle Cloud Infrastructure Documentation: Using Instance Principals