Pass the Oracle Oracle Cloud Solutions Infrastructure 1z0-1072-25 Questions and answers with CertsForce

In Oracle Cloud Infrastructure (OCI) File Storage, when you overwrite a portion of a file, the service does not immediately reclaim the space occupied by the previous version of the file. The total meteredBytes reflects both the original data and the new data written.

Scenario Explanation: You start with a 1 GB file. When you overwrite 0.5 GB of this file, the file system retains both the 0.5 GB of the original file and the new 0.5 GB you wrote.

Calculation: The original 1 GB file contributes 1 GB to meteredBytes. When 0.5 GB is overwritten, the total usage becomes 1.5 GB (1 GB original + 0.5 GB new).

Thus, after the hourly update cycle, the total meteredBytes shown by the File Storage service will be 1.5 GB.

The Network Visualizer tool in Oracle Cloud Infrastructure is valuable because it visualizes the topology of all Virtual Cloud Networks (VCNs) in a selected region and tenancy.

Topology Visualization: The Network Visualizer provides a graphical representation of the network components and their relationships within a VCN, including subnets, route tables, gateways, and security lists. This visualization helps users understand the network architecture and troubleshoot issues effectively.

Other Options:

Real-time monitoring of network traffic (B), detailed information about physical network components (C), and automated reports on network performance metrics (D) are not the primary functions of the Network Visualizer. These functionalities are typically handled by other OCI services or tools.

Relevant OCI Documentation:

Network Visualizer Overview

This documentation details the features and benefits of the Network Visualizer tool in OCI.

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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 HTTPS when 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.

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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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.

The principle of least privilege is a security best practice that dictates that users should only be granted the minimum set of permissions necessary to perform their tasks. This principle helps to minimize the risk of accidental or malicious actions that could compromise security.

IAM Policies in OCI: When creating IAM policies in OCI, you should carefully evaluate the required permissions and only grant those that are absolutely necessary for the users or groups to perform their specific roles. This helps to reduce the attack surface and prevent unauthorized access to sensitive resources.

Restoring a block volume from a backup in OCI provides flexibility and options for scaling and recovery:

Restoring to a Larger Volume Size: When restoring a block volume from a backup, you have the option to restore it to a volume that is larger than the original. This is particularly useful if you anticipate needing more storage capacity after the restore.

Full and Incremental Backups: OCI supports both full and incremental backups. You can restore from any backup type, which makes it possible to restore data efficiently depending on the backup strategy used.

Multiple Restores: Multiple volumes can be restored from a single backup, providing flexibility in disaster recovery scenarios.

Availability Domain: The restored volume can be created in any availability domain within the same region, not necessarily the same one where the original volume was located.

Relevant OCI Documentation:

Block Volume Service Overview

Restoring a Block Volume

These references explain the process and options available for restoring block volumes from backups.

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Oracle Cloud Infrastructure (OCI) Object Storage is a scalable, highly durable service that allows you to store any type of data in a secure and cost-effective manner. The correct and incorrect statements regarding OCI Object Storage are as follows:

A. Immutable Option: You can indeed set an immutable option for data in Object Storage using retention rules. This feature ensures that once data is written, it cannot be modified or deleted until the retention period expires, making it ideal for regulatory compliance.

C. Object Lifecycle Rules: Object lifecycle policies allow you to automate the archiving or deletion of objects based on their age or other criteria, helping manage storage costs and data retention efficiently.

D. Object Versioning: Versioning is enabled at the bucket level, not the namespace level. However, once enabled for a bucket, it helps retain, retrieve, and restore every version of every object stored in that bucket.

B. Object Storage Sharing Across Tenancies: This statement is not true. OCI Object Storage buckets and objects are specific to a tenancy and cannot be shared across different tenancies directly. Access to Object Storage resources is controlled within a single tenancy through IAM policies.

Relevant OCI Documentation:

OCI Object Storage Overview

Object Lifecycle Management

These references provide details on how Object Storage functions and the features available.

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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.

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.