1z0-1072-24 Exam Dumps - Oracle Cloud Infrastructure Questions and Answers

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.

References:

Oracle Cloud Infrastructure Documentation:Block Volume Performance Levels

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To allow access to Oracle Cloud Infrastructure (OCI) File Storage Service (FSS) for a Database (DB) System with read-only permissions, you should create anNFS export optionthat specifiesREAD_ONLYaccess.

NFS Export Options:These options define the access permissions (read/write or read-only) for clients connecting to the file system. By setting the export option toREAD_ONLY, you ensure that the DB System can only read from the FSS and cannot modify or delete files.

References:

Oracle Cloud Infrastructure Documentation:File Storage Service Export Options

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To securely grant a third-party application access to specific Oracle Cloud Infrastructure (OCI) resources, the recommended approach is to configure the application to useInstance 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.

References:

Oracle Cloud Infrastructure Documentation:Instance Principals

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Setting up a Site-to-Site VPN on Oracle Cloud Infrastructure offers several key benefits related to connectivity and reliability:

Static or Dynamic Routing (BGP): OCI allows customers to configure Site-to-Site VPN with either static routing or dynamic routing using Border Gateway Protocol (BGP). This flexibility enables customers to choose the routing method that best suits their network configuration and requirements.

Redundant VPN Tunnels: OCI automatically provisions redundant VPN tunnels when you set up a Site-to-Site VPN. These redundant tunnels ensure high availability and fault tolerance, so if one tunnel fails, traffic can continue to flow through the other tunnel without interruption.

Bandwidth Considerations: While the VPN provides a reliable connection, it typically does not exceed 2 Gbps in bandwidth. Higher bandwidth connections usually require FastConnect.

Private Connection: The VPN does create a secure and private connection between on-premises data centers and OCI, but it does not inherently provide a consistent network experience in the way that a dedicated connection like FastConnect does.

Relevant OCI Documentation:

Site-to-Site VPN Overview

Configuring Routing for VPNs

These references detail the benefits and technical specifications of setting up Site-to-Site VPNs on OCI.

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Geolocation Steeringin 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.

References:

Oracle Cloud Infrastructure Documentation:Traffic Management Steering Policies

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Oracle Cloud Infrastructure (OCI) File Storage Service offers robust encryption capabilities to ensure data security.

B. Customer-Managed Encryption:Customers can choose to encrypt their data using their own keys stored in the OCI Vault service. This gives customers control over their encryption keys and enhances data security.

D. Oracle-Managed Encryption:By default, all data stored in OCI File Storage is encrypted using Oracle-managed keys. This ensures that data is encrypted at rest without requiring any action from the customer.

Incorrect Statements:

A. Communication is not encrypted via HTTPSwhen accessing file systems; instead, encryption in transit is typically managed via NFS over TLS.

C. Encryption of communication to a mount target is handled via network configurations, not through export options.

References:

Oracle Cloud Infrastructure Documentation:File Storage Encryption

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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.

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To ensure secure communication between database servers and OCI Object Storage, you should use aService 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.

References:

Oracle Cloud Infrastructure Documentation:Service Gateway Overview

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TheOS Management Servicein 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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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

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