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Oracle 1Z0-1072-25 認定試験の出題範囲：
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質問 # 14
How would you allow access to FSS for a DB System with read-only permissions?
- A. Modify the security list to allow stateful ingress rules.
- B. Modify the security list to allow stateless ingress rules.
- C. Create an instance principal for the DB System.
- D. Create an NFS export option that allows READ_ONLY access.
正解：D
解説：
To allow access to Oracle Cloud Infrastructure (OCI) File Storage Service (FSS) for a Database (DB) System with read-only permissions, you should create an NFS export option that specifies READ_ONLY access.
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 to READ_ONLY, you ensure that the DB System can only read from the FSS and cannot modify or delete files.
Reference:
Oracle Cloud Infrastructure Documentation: File Storage Service Export Options
質問 # 15
With OCI's pricing of $0.0085 USD per Gigabyte for Outbound Data Transfer in North America, how much will they spend per month for 7 Petabytes of Outbound Data Transfer?
- A. $0.00 (free with OCI)
- B. $150,000.00
- C. $59,500.00
- D. $59,415.00
正解：C
解説：
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.
Reference:
Oracle Cloud Infrastructure Pricing: OCI Pricing
質問 # 16
Which image option allows you to create identical instances with minimal effort?
- A. Use Oracle-provided images
- B. Create a custom image
- C. Select an image from the OCI Marketplace
- D. Bring your own image
正解：B
解説：
When you need to create identical instances with minimal effort, creating a custom image is the best option.
Custom Images: A custom image captures the exact configuration of an instance, including the OS, software, configurations, and data. By using a custom image, you can easily replicate the same setup across multiple instances, ensuring consistency and reducing the need for manual configuration each time.
Other Options:
Bring Your Own Image: This allows you to import your custom OS image into OCI, but it's more suited for cases where you are migrating from another environment.
Select an Image from the OCI Marketplace: This provides pre-configured images from Oracle or third parties, but they may require additional setup to match your specific requirements.
Use Oracle-Provided Images: These are basic images provided by Oracle, which may not include the specific customizations you need.
Relevant OCI Documentation:
Custom Images Overview
This resource explains how to create and use custom images for quickly deploying identical instances.
質問 # 17
You enabled Cross Region Replication for the volume and selected US West (San Jose) as the destination region. What should you do to create a new volume from the volume replica?
- A. No action required. By default, the replica is available as a block volume.
- B. Initiate the replica.
- C. Trigger the replica.
- D. Activate the replica.
正解：A
解説：
When Cross-Region Replication is enabled for a block volume in Oracle Cloud Infrastructure (OCI), the replication process automatically creates and maintains a synchronized copy of the block volume in the selected destination region (in this case, US West (San Jose)).
Replica Availability: The replicated volume is immediately available as a block volume in the destination region. You do not need to take any additional action to activate or trigger the replica.
Creating New Volumes: Since the replica is automatically available as a block volume, you can directly use it to create a new volume in the destination region without any manual intervention.
Relevant OCI Documentation:
Cross-Region Block Volume Replication
This documentation outlines how cross-region replication works and confirms that no additional steps are needed to create a new volume from a replica
質問 # 18
What is the primary function of the Network Path Analyzer (NPA) tool provided by Oracle Cloud Infrastructure (OCI)?
- A. Sending actual traffic between source and destination to diagnose connectivity issues
- B. Optimizing network performance by dynamically adjusting routing paths based on traffic patterns
- C. Collecting and analyzing network configuration to identify virtual network configuration issues impacting connectivity
- D. Providing real-time monitoring of network traffic to detect security threats and unauthorized access attempts
正解：C
解説：
The primary function of the Network Path Analyzer (NPA) tool in Oracle Cloud Infrastructure (OCI) is to help users troubleshoot and diagnose network connectivity issues by analyzing the network path between a source and a destination within OCI. The tool collects and analyzes the configuration of the virtual network, identifying any misconfigurations or issues that might impact connectivity.
NPA Usage: The Network Path Analyzer allows administrators to trace the network path and check for issues such as incorrect security list rules, route table misconfigurations, or any other factors that could prevent network traffic from reaching its destination.
Reference:
Oracle Cloud Infrastructure Documentation: Network Path Analyzer
質問 # 19
Which TWO statements are NOT correct regarding the Oracle Cloud Infrastructure (OCI) burstable instances?
- A. If the instance's average CPU utilization is below the baseline, it can burst above the baseline.
- B. Baseline utilization is a fraction of each CPU core.
- C. Burstable instances are charged according to the baseline OCPU.
- D. Burstable instances cost less than regular instances.
正解：C、D
解説：
The following statements about OCI burstable instances are NOT correct:
A . Burstable instances cost less than regular instances: This is incorrect because burstable instances are not necessarily cheaper; the cost depends on the baseline utilization. While they allow for cost efficiency when running at a lower CPU baseline, they can become more expensive if frequently bursting above the baseline.
B . Burstable instances are charged according to the baseline OCPU: This is incorrect because burstable instances are billed based on actual OCPU usage, which includes both baseline and burst usage. If an instance frequently operates above its baseline, the cost will reflect this higher usage.
Correct Concepts:
C . Burstable instances can temporarily use more CPU than their baseline if the average CPU utilization is below the baseline.
D . Baseline utilization is a fraction of each CPU core, which determines the level of consistent performance available without bursting.
Reference:
Oracle Cloud Infrastructure Documentation: Burstable Instances
質問 # 20
How many capacity reservations would you create to meet the requirement for high availability and distribution across Availability Domains?
- A. Three
- B. One
- C. Four
- D. Two
正解：A
解説：
In Oracle Cloud Infrastructure (OCI), to ensure high availability and distribution across Availability Domains (ADs), the recommended approach is as follows:
Capacity Reservations for High Availability: To achieve high availability, especially across all three Availability Domains in a region, you should create three capacity reservations. Each reservation corresponds to one AD, ensuring that your instances or resources are evenly distributed and resilient to AD-level failures.
Why Three: This setup provides redundancy and load distribution across the ADs, meeting the high availability requirements.
Relevant OCI Documentation:
Capacity Reservations
This document outlines how to create and manage capacity reservations to meet high availability and fault tolerance requirements.
質問 # 21
How can OCI IAM be configured to facilitate cross-region access?
- A. The administrator can grant users permissions to access specific resources in the other region.
- B. Users can access resources in all regions by default.
- C. Identity domain replication must be enabled.
- D. The identity domain automatically replicates to the other region.
正解：A
解説：
In Oracle Cloud Infrastructure (OCI), cross-region access is facilitated by configuring IAM policies that grant users or groups permissions to access resources in other regions. IAM policies in OCI are global, meaning they apply across all regions by default. However, an administrator can specifically configure these policies to allow or restrict access to resources in different regions.
Example: An administrator can write a policy that allows a user to manage compute instances in a specific region by including the region's name in the policy statement.
Reference:
Oracle Cloud Infrastructure Documentation: IAM Policies
質問 # 22
Which THREE protocols are supported by the Oracle Cloud Infrastructure (OCI) private Network Load Balancers?
- A. BGP
- B. HTTP
- C. ICMP
- D. TCP
- E. UDP
- F. iSCSI
正解：B、D、E
解説：
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
質問 # 23
Which statement is TRUE about restoring a volume from a block volume backup in the Oracle Cloud Infrastructure (OCI) Block Volume service?
- A. You can restore only one volume from a manual block volume backup.
- B. You can restore a volume from any full volume backup but not from an incremental backup.
- C. You can only restore a volume to the same availability domain in which the original block volume resides.
- D. You can restore a block volume backup to a larger volume size.
正解：D
解説：
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.
質問 # 24
What would be the total meteredBytes shown by the File Storage service after the hourly update cycle is complete when you overwrite 0.5 GB of a 1 GB file?
- A. 1.5 GB
- B. 1 GB
- C. 2.5 GB
- D. 0.5 GB
正解：A
解説：
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.
Reference:
Oracle Cloud Infrastructure Documentation: File Storage Service Overview
質問 # 25
Which Oracle Cloud Infrastructure (OCI) Identity and Access Management (IAM) policy is invalid?
- A. Allow dynamic-group 'Default'/'FrontEnd' to manage instance-family in compartment Project-A
- B. Allow any-user to inspect users in tenancy
- C. Allow group 'Default'/'A-Admins' to manage all-resources in compartment Project-A
- D. Allow group 'Default'/'A-Developers' to create volumes in compartment Project-A
正解：B
解説：
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
質問 # 26
Which IAM Identity Domain type should you create for a full-featured Identity-as-a-Service (IDaaS) solution?
- A. Oracle Apps Premium
- B. Free
- C. Premium
- D. External User
正解：C
解説：
In Oracle Cloud Infrastructure (OCI), when you need a full-featured Identity-as-a-Service (IDaaS) solution, the appropriate Identity Domain type to create is Premium.
Premium Identity Domain: This option provides a comprehensive set of identity and access management (IAM) capabilities, including advanced security features, identity governance, and support for enterprise-grade integrations. It supports managing user identities, multifactor authentication, and various other identity services required for a robust IDaaS solution.
Other Options:
External User: This is a limited domain type typically used for managing users who only need access to specific external services.
Free: This domain type offers limited features and is not intended for full-featured enterprise IAM requirements.
Oracle Apps Premium: This is tailored for integrating with Oracle applications but does not offer the broad capabilities of the Premium option.
Relevant OCI Documentation:
Oracle Identity Domains Overview
This documentation explains the various identity domain types and their use cases within OCI.
質問 # 27
Which compute capacity type would you select to meet these requirements?
- A. On-demand capacity
- B. Dedicated host
- C. Preemptible capacity
- D. Capacity reservation
正解：A
解説：
On-demand capacity is the compute capacity type in Oracle Cloud Infrastructure (OCI) that allows you to provision and use compute instances whenever needed, without any long-term commitment. This flexibility is ideal for various workloads, including development, testing, and production environments, where immediate availability and scalability are crucial.
Key Points:
On-Demand Capacity: On-demand compute instances provide users with the flexibility to spin up instances as required and only pay for the time the instances are running. This model is most suitable for workloads with unpredictable usage patterns or short-term requirements.
Flexibility and Scalability: With on-demand capacity, you can quickly scale your resources up or down based on your application's needs, ensuring that you only pay for the resources you actually use.
No Commitment: Unlike reserved capacity, on-demand capacity does not require any long-term commitment or upfront payment, making it an attractive option for organizations looking to avoid capital expenditures.
Reference:
Oracle Cloud Infrastructure Documentation: OCI Compute Pricing
Oracle Cloud Infrastructure Documentation: Compute Instance Lifecycle
Explanation of Incorrect Options:
A . Capacity reservation: This option allows you to reserve capacity in advance, ensuring that resources are available when needed. It's ideal for predictable workloads but may not be as cost-effective for fluctuating demands.
B . Preemptible capacity: Preemptible instances are a lower-cost option where instances can be terminated by OCI if resources are needed elsewhere. This is suitable for non-critical workloads that can tolerate interruptions.
D . Dedicated host: Dedicated hosts provide physical servers for your exclusive use, offering isolation and predictable performance. This option is more suitable for workloads requiring dedicated resources or compliance needs.
Thus, Option C: On-demand capacity is the correct choice for most general-purpose workloads needing flexibility and immediate availability without long-term commitment.
質問 # 28
Which OCI Object Storage tier is suitable for storing the backup to minimize cost while meeting the requirements of immediate accessibility and retention of 31 days?
- A. Auto-Tiering tier
- B. Infrequent Access tier
- C. Archive tier
- D. Standard tier
正解：B
解説：
The Infrequent Access tier in OCI Object Storage is suitable for storing backups that need to be immediately accessible and retained for a specific period, such as 31 days, while also minimizing costs. This tier offers a balance between cost and accessibility, charging lower storage costs compared to the Standard tier but still allowing quick access to the data.
Use Case: The Infrequent Access tier is designed for data that is not frequently accessed but must remain readily available when needed, making it ideal for backup storage.
Reference:
Oracle Cloud Infrastructure Documentation: Object Storage Tiers
質問 # 29
Which policy would you write to provide admin access to all three of your existing admin groups for a shared Test compartment?
- A. Allow all-group to manage all-resources in compartment Test where request.principal.group.tag.EmployeeGroup.Role='Admin'
- B. Allow any-user to manage all-resources in compartment Test where request.principal.group.tag.EmployeeGroup.Role='Admin'
- C. Allow dynamic-group to manage all-resources in compartment Test where request.principal.group.tag.EmployeeGroup.Role='Admin'
- D. Allow group any-group to manage all-resources in compartment Test where request.principal.group.tag.EmployeeGroup.Role='Admin'
正解：A
解説：
In Oracle Cloud Infrastructure (OCI), policies are written to define permissions for user groups. The correct policy to provide admin access to all three existing admin groups in a shared compartment (in this case, the "Test" compartment) would be:
"Allow all-group to manage all-resources in compartment Test where request.principal.group.tag.EmployeeGroup.Role='Admin'".
"Allow all-group": Grants access to all groups.
"to manage all-resources": Specifies full access permissions (manage includes all CRUD operations).
"in compartment Test": Limits the scope of the policy to the "Test" compartment.
"where request.principal.group.tag.EmployeeGroup.Role='Admin'": Adds a condition to restrict this admin-level access to only groups tagged with the role 'Admin'.
This policy ensures that only users in the groups tagged as Admin will be allowed to manage resources in the Test compartment, making it the most suitable choice for providing admin access.
For reference:
OCI Policy Syntax Documentation
質問 # 30
Which is NOT a necessary step to complete this setup for instance principals?
- A. Generate Auth Tokens to enable instances in the dynamic group to authenticate with APIs.
- B. Deploy the application and the SDK to all the instances that belong to the dynamic group.
- C. Create a dynamic group with matching rules to specify which instances can make API calls against services.
- D. Create a policy granting permissions to the dynamic group to access services in your compartment or tenancy.
正解：A
解説：
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.
Reference:
Oracle Cloud Infrastructure Documentation: Using Instance Principals
質問 # 31
Which Traffic Management Steering Policy facilitates the distribution of DNS traffic based on the geographical location of end users?
- A. IP Prefix Steering
- B. Proximity Steering
- C. Geolocation Steering
- D. ASN Steering
正解：C
解説：
Geolocation Steering in 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.
Reference:
Oracle Cloud Infrastructure Documentation: Traffic Management Steering Policies
質問 # 32
Which TWO statements are TRUE about Private IP addresses in Oracle Cloud Infrastructure (OCI)?
- A. A private IP can have an optional public IP assigned to it if it resides in a public subnet.
- B. By default, the primary VNIC of an instance in a subnet has one primary private IP address and one secondary private IP address.
- C. By default, the primary VNIC of an instance in a subnet has one primary private IP address.
- D. Each VNIC can only have one private IP address.
正解：A、C
解説：
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.
質問 # 33
Which authentication option should you use to ensure third-party APIs communicate with OCI resources?
- A. API Signing Key
- B. SSH Key Pair with 2048-bit algorithm
- C. OCI Username and Password
- D. Auth Tokens
正解：A
解説：
When ensuring that third-party APIs communicate securely with OCI resources, the appropriate authentication option is API Signing Key.
API Signing Key: This method uses an RSA key pair to authenticate and sign API requests. The API signing key provides a secure and reliable way to ensure that the API requests to OCI are coming from an authorized source. It is commonly used for programmatic access to OCI services.
Other Options:
SSH Key Pair: Primarily used for secure shell access to compute instances, not for API authentication.
Auth Tokens: Typically used for authentication in environments where APIs don't support the API Signing Key, such as OCI CLI or SDKs.
OCI Username and Password: Generally used for the Console login, not for securing API communications.
Relevant OCI Documentation:
API Signing Key Authentication
This documentation provides details on using API Signing Keys for secure API communication in OCI.
質問 # 34
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