1Z0-1072-25問題集最新の2025年12月15日練習テスト53リアル解答があります
2025年最新の100%試験高合格率1Z0-1072-25問題集PDF
Oracle 1Z0-1072-25 認定試験の出題範囲：
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質問 # 28
You want to protect your VM instance from low-level threats, such as rootkits and bootkits. What should you do?
- A. Create a burstable instance.
- B. Use Vulnerability Scanning Service.
- C. Create a shielded instance.
- D. Use in-transit encryption.
正解：C
解説：
To protect your VM instance from low-level threats, such as rootkits and bootkits, you should create a shielded instance in Oracle Cloud Infrastructure (OCI). Shielded instances are designed to provide enhanced security features, including:
Secure Boot: Ensures that the instance boots only with trusted software.
Measured Boot: Records boot metrics, allowing verification that the instance has not been tampered with.
Trusted Platform Module (TPM): Provides additional security through cryptographic functions.
These features help protect against low-level threats that could compromise the integrity of the instance at boot time.
Reference:
Oracle Cloud Infrastructure Documentation: Shielded Instances
質問 # 29
Which image option allows you to create identical instances with minimal effort?
- A. Create a custom image
- B. Bring your own image
- C. Use Oracle-provided images
- D. Select an image from the OCI Marketplace
正解：A
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 # 30
Which components are required for establishing remote peering between two Virtual Cloud Networks (VCNs) in Oracle Cloud Infrastructure (OCI)?
- A. Two VCNs with nonoverlapping CIDRS in different regions, a dynamic routing gateway (DRG) attached to each VCN, a remote peering connection (RPC) on each DRG, and a connection established between the RPCs.
- B. A single VCN with nonoverlapping CIDRS in each region, a dynamic routing gateway (DRG) attached to each VCN, and a direct connection between the DRGS.
- C. Two VCNs with nonoverlapping CIDRS in the same region, a dynamic routing gateway (DRG) attached to each VCN, and a direct connection between the DRGs.
- D. Two VCNs with overlapping CIDRS in different regions, a virtual private network (VPN) gateway attached to each VCN, and a direct connection between the VPN gateways.
正解：A
解説：
Remote peering in Oracle Cloud Infrastructure allows two VCNs in different regions to communicate securely. To establish remote peering, the following components are required:
Two VCNs with Nonoverlapping CIDRs:
The CIDR blocks of the two VCNs must not overlap. This is crucial to avoid routing conflicts and ensure that traffic is correctly routed between the VCNs.
Dynamic Routing Gateway (DRG) Attached to Each VCN:
A DRG is a virtual router that provides a path for traffic between the VCN and networks outside the VCN, such as other VCNs via remote peering, on-premises networks, or other cloud services. Each VCN needs its own DRG.
Remote Peering Connection (RPC):
An RPC is a specialized connection on the DRG used specifically for remote peering. You need to create an RPC on each DRG associated with the VCNs you wish to peer.
Connection Between RPCs:
Finally, a connection must be established between the RPCs of the two DRGs. This connection facilitates the secure and private exchange of traffic between the VCNs over Oracle's backbone network.
Incorrect Options:
Option A involves a single VCN, which does not fulfill the requirement of remote peering between two VCNs.
Option B involves overlapping CIDRs and VPN gateways, which are incorrect for remote peering.
Option C suggests peering within the same region, which would be considered local peering rather than remote peering.
Relevant OCI Documentation:
OCI Remote VCN Peering
Dynamic Routing Gateway (DRG) Overview
These resources provide a detailed guide on configuring remote peering in OCI, ensuring secure and effective communication between VCNs across regions.
質問 # 31
Which OCI service would you use to apply kernel security updates to all instances?
- A. Data Safe
- B. Artifact Registry
- C. OS Management Service
- D. Container Registry
正解：C
解説：
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.
質問 # 32
Which Oracle Cloud Infrastructure (OCI) Identity and Access Management (IAM) policy is invalid?
- A. Allow group 'Default'/'A-Developers' to create volumes in compartment Project-A
- B. Allow dynamic-group 'Default'/'FrontEnd' to manage instance-family in compartment Project-A
- C. Allow group 'Default'/'A-Admins' to manage all-resources in compartment Project-A
- D. Allow any-user to inspect users in tenancy
正解：D
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 # 33
By default, OCI IAM policies follow the principle of least privilege. What does this principle mean in the context of policy creation?
- A. Policies should be identical for all users within a tenancy.
- B. Policies should be written in a complex and technical manner to enhance security.
- C. Policies should provide only the minimum set of permissions required for users to perform their tasks effectively.
- D. Policies should grant all possible permissions to simplify access control.
正解：C
解説：
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.
Reference:
Oracle Cloud Infrastructure Documentation: Identity and Access Management (IAM) Best Practices
質問 # 34
Which is NOT a necessary step to complete this setup for instance principals?
- A. Create a dynamic group with matching rules to specify which instances can make API calls against services.
- B. Deploy the application and the SDK to all the instances that belong to the dynamic group.
- C. Generate Auth Tokens to enable instances in the dynamic group to authenticate with APIs.
- D. Create a policy granting permissions to the dynamic group to access services in your compartment or tenancy.
正解：C
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 # 35
Which statement accurately describes ephemeral principals?
- A. Ephemeral principals represent long-lived service accounts.
- B. Ephemeral principals are temporary credentials granted to resources.
- C. Ephemeral principals are another term for dynamic groups.
- D. Ephemeral principals are user accounts with limited lifespans.
正解：B
解説：
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.
Reference:
Oracle Cloud Infrastructure Documentation: Using Instance Principals
質問 # 36
Which statement is TRUE about delegating an existing domain to the Oracle Cloud Infrastructure (OCI) DNS service?
- A. Domains can be delegated to OCI DNS via FastConnect partners.
- B. Domains can be self-delegated to OCI DNS from its own service portal.
- C. All domains can be retrieved to OCI DNS via DYN.
- D. Domains can be delegated to OCI DNS from the Domain Registrar's self-service portal.
正解：D
解説：
To delegate a domain to the Oracle Cloud Infrastructure (OCI) DNS service, the domain needs to be pointed to OCI's DNS servers. This can be done through the Domain Registrar's self-service portal, where you update the name servers for your domain to OCI's DNS servers.
Process: You typically log into the domain registrar where your domain is registered and replace the existing name servers with the name servers provided by OCI DNS. Once this is done, DNS queries for your domain will be directed to OCI DNS.
Reference:
Oracle Cloud Infrastructure Documentation: Managing DNS Zones
質問 # 37
A financial firm is designing an application architecture for its online trading platform that should have high availability and fault tolerance. What should the architect do to avoid any costly service disruptions and ensure data durability?
- A. Create a replication policy to send data to a different bucket in another OCI region.
- B. Create a new Object Storage bucket in another region and configure recycle policy to move data every 5 days.
- C. Create a lifecycle policy to regularly send data from the Standard to Archive storage.
- D. Copy the Object Storage bucket to a block volume.
正解：A
解説：
For an online trading platform requiring high availability and fault tolerance, it's critical to ensure data durability and avoid any costly service disruptions. In Oracle Cloud Infrastructure (OCI), Object Storage is often used to store critical data, such as transaction logs or user data, due to its scalability, durability, and reliability.
Option B is the most suitable approach for ensuring data durability and availability across regions. Here's why:
Cross-Region Replication (CRR): OCI offers a feature called Cross-Region Replication for Object Storage. This feature allows you to automatically and asynchronously replicate objects in a bucket from one OCI region to another. This setup ensures that even if one region experiences a failure, the data is still available in another region, thereby meeting the requirements for high availability and fault tolerance.
Data Durability: By replicating data to another region, you protect against regional outages. OCI guarantees 99.95% availability for replicated data, which is critical for a financial firm's trading platform where data consistency and durability are paramount.
Disaster Recovery: With data replicated in another region, the trading platform can quickly switch to using the data in the secondary region in case of a disaster in the primary region. This setup significantly reduces recovery time objectives (RTO) and ensures business continuity.
Reference:
Oracle Cloud Infrastructure Documentation: Cross-Region Replication for Object Storage Oracle Whitepaper: High Availability and Disaster Recovery in Oracle Cloud Infrastructure Explanation of Incorrect Options:
Option A: Creating a new Object Storage bucket in another region and configuring a recycle policy to move data every 5 days does not provide real-time data availability or the fault tolerance required for a financial application. Recycle policies are intended for managing the lifecycle of data, not for high availability or disaster recovery.
Option C: While lifecycle policies are useful for moving less frequently accessed data to a more cost-effective storage tier (e.g., from Standard to Archive), they do not address cross-region redundancy or real-time availability, which are critical for this use case.
Option D: Copying an Object Storage bucket to a block volume is not a recommended practice for ensuring data durability and fault tolerance. Block volumes are used for persistent storage attached to compute instances, and copying object storage data to block volumes does not achieve the same level of redundancy and cross-region availability as replication policies.
Thus, Option B is the correct and most efficient method for ensuring high availability and fault tolerance in this scenario.
質問 # 38
Which TWO options will accomplish a fully redundant connection from an on-premises data center to a Virtual Cloud Network (VCN) in the us-ashburn-1 region?
- A. Configure two FastConnect virtual circuits to the us-ashburn-1 region and terminate them in diverse hardware on-premises.
- B. Configure one FastConnect virtual circuit to the us-ashburn-1 region and the second FastConnect virtual circuit to the us-phoenix-1 region.
- C. Configure one FastConnect virtual circuit to the us-ashburn-1 region and a Site-to-Site VPN to the us-ashburn-1 region.
- D. Configure a Site-to-Site VPN from a single on-premises CPE.
正解：A、C
解説：
For a fully redundant connection from an on-premises data center to a VCN in the OCI us-ashburn-1 region, it is important to ensure high availability and fault tolerance. Here's how each option contributes to redundancy:
Option B: Two FastConnect Virtual Circuits:
FastConnect provides a dedicated, private connection with higher bandwidth and more consistent performance compared to a VPN. To achieve redundancy, you can configure two FastConnect circuits in the same region (us-ashburn-1), each terminated on diverse hardware on-premises. This setup ensures that even if one circuit or its associated hardware fails, the other circuit can maintain the connection. This ensures no single point of failure in the connectivity to OCI. Thus, option B is correct.
Option D: FastConnect and Site-to-Site VPN:
Another approach to redundancy is to have a mix of connection types. By setting up one FastConnect circuit and one Site-to-Site VPN, both terminating in the same region (us-ashburn-1), you create a diverse connection path. If the FastConnect connection fails, traffic can automatically route through the VPN connection, maintaining connectivity. This setup adds an extra layer of redundancy, making option D correct as well.
Incorrect Options:
Option A: Only configuring a Site-to-Site VPN from a single on-premises CPE does not provide redundancy because it involves just one connection path. If that connection or the CPE fails, there would be no fallback.
Option C: Configuring FastConnect circuits to different regions (us-ashburn-1 and us-phoenix-1) does not provide redundancy within a single region but rather across regions, which is not required for regional redundancy.
Relevant OCI Documentation:
OCI FastConnect Overview
Using Site-to-Site VPN and FastConnect for Redundancy
These references offer more detailed information on setting up redundant connections and the benefits of each connection type within OCI.
質問 # 39
How would you allow access to FSS for a DB System with read-only permissions?
- A. Modify the security list to allow stateless ingress rules.
- B. Modify the security list to allow stateful ingress rules.
- C. Create an NFS export option that allows READ_ONLY access.
- D. Create an instance principal for the DB System.
正解：C
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 # 40
Which policy would you write to provide admin access to all three of your existing admin groups for a shared Test compartment?
- A. Allow any-user to manage all-resources in compartment Test where request.principal.group.tag.EmployeeGroup.Role='Admin'
- B. Allow all-group 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：B
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 # 41
How can an organization securely grant a third-party application access to specific OCI resources?
- A. By creating an IAM policy granting full access to the tenancy
- B. By configuring the application to utilize Instance Principal
- C. By implementing OAuth 2.0 with the application
- D. By sharing user credentials for an OCI administrator
正解：B
解説：
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
質問 # 42
Which TWO statements about the Oracle Cloud Infrastructure (OCI) File Storage Service are accurate?
- A. Communication with file systems in a mount target is encrypted via HTTPS.
- B. Customers can encrypt data in their file system using their own Vault encryption key.
- C. Customers can encrypt the communication to a mount target via export options.
- D. File systems use Oracle-managed keys by default.
正解：B、D
解説：
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.
Reference:
Oracle Cloud Infrastructure Documentation: File Storage Encryption
質問 # 43
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