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Oracle 1Z0-1072-25 Exam Syllabus Topics:
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NEW QUESTION # 17
You want to protect your VM instance from low-level threats, such as rootkits and bootkits. What should you do?
- A. Create a shielded instance.
- B. Create a burstable instance.
- C. Use Vulnerability Scanning Service.
- D. Use in-transit encryption.
Answer: A
Explanation:
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
NEW QUESTION # 18
Which statement is true about instance configurations and instance pools in OCI?
- A. An instance pool can have multiple instance configurations associated with it.
- B. You cannot reuse the same instance configuration for multiple instance pools.
- C. You can only delete an instance configuration if it is not associated with any instance pool.
- D. You can delete an instance configuration if it is associated with an instance pool.
Answer: C
NEW QUESTION # 19
Which authentication option should you use to ensure third-party APIs communicate with OCI resources?
- A. API Signing Key
- B. OCI Username and Password
- C. SSH Key Pair with 2048-bit algorithm
- D. Auth Tokens
Answer: A
Explanation:
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.
NEW QUESTION # 20
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 grant all possible permissions to simplify access control.
- C. Policies should provide only the minimum set of permissions required for users to perform their tasks effectively.
- D. Policies should be written in a complex and technical manner to enhance security.
Answer: C
Explanation:
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
NEW QUESTION # 21
Which OCI feature should be used to ensure that communication between database servers and OCI Object Storage is secure?
- A. Use a VPN Gateway
- B. Use a Service Gateway
- C. Use a Local Peering Gateway
- D. Use a NAT Gateway
Answer: B
Explanation:
To ensure secure communication between database servers and OCI Object Storage, you should use a Service 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.
Reference:
Oracle Cloud Infrastructure Documentation: Service Gateway Overview
NEW QUESTION # 22
Which statement is true about File System Replication in Oracle Cloud Infrastructure (OCI)?
- A. Only a file system that has been exported can be used as a target file system.
- B. You can replicate the data in one file system to another file system only in the same region.
- C. You can replicate the data in one file system to another file system in the same region or a different region.
- D. You cannot specify a replication interval when you create the replication resource.
Answer: C
Explanation:
File System Replication in Oracle Cloud Infrastructure (OCI) allows you to replicate data from one file system to another either within the same region or across different regions. This capability is particularly useful for disaster recovery, data protection, and global data distribution scenarios.
Cross-Region Replication: The replication feature enables you to create a copy of your file system in a different region, ensuring that your data is available even in the event of a regional failure.
Same-Region Replication: You also have the option to replicate data within the same region, which can be useful for scenarios such as high availability and local backups.
Reference:
Oracle Cloud Infrastructure Documentation: File System Replication
NEW QUESTION # 23
Which THREE protocols are supported by the Oracle Cloud Infrastructure (OCI) private Network Load Balancers?
- A. BGP
- B. UDP
- C. iSCSI
- D. TCP
- E. HTTP
- F. ICMP
Answer: B,D,E
Explanation:
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
NEW QUESTION # 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
Answer: A
Explanation:
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
NEW QUESTION # 25
Which TWO statements are NOT correct regarding the Oracle Cloud Infrastructure (OCI) burstable instances?
- A. Baseline utilization is a fraction of each CPU core.
- B. Burstable instances cost less than regular instances.
- C. If the instance's average CPU utilization is below the baseline, it can burst above the baseline.
- D. Burstable instances are charged according to the baseline OCPU.
Answer: B,D
Explanation:
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
NEW QUESTION # 26
How will moving a database instance to a different compartment impact user access?
- A. IAM policies are not tied to compartments.
- B. Access will be revoked for all users.
- C. Compartments prevent resource movement.
- D. Compartments are not covered by IAM policies.
Answer: B
Explanation:
In Oracle Cloud Infrastructure (OCI), when you move a database instance to a different compartment, the following impact on user access occurs:
Impact of Moving Resources: When you move a resource, like a database instance, to a different compartment, the IAM policies that grant access to that resource in the original compartment no longer apply. This effectively revokes access for users or groups unless equivalent policies are in place in the new compartment.
Restoring Access: To restore access, you would need to create new IAM policies in the destination compartment that grant the necessary permissions to the users or groups who need access.
Relevant OCI Documentation:
Managing Compartments
Moving Resources
These resources provide detailed steps on how compartment changes impact resource access and management.
NEW QUESTION # 27
Which IAM Identity Domain type should you create for a full-featured Identity-as-a-Service (IDaaS) solution?
- A. Premium
- B. External User
- C. Free
- D. Oracle Apps Premium
Answer: A
Explanation:
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.
NEW QUESTION # 28
What would happen if you choose not to proactively reboot the instance before the scheduled maintenance due date?
- A. The instance is either reboot-migrated or rebuilt in place for you.
- B. You will receive another notification to reboot within the next 14 days.
- C. The instance will get terminated.
- D. You will receive another notification to reboot within the next 7 days.
Answer: A
Explanation:
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.
NEW QUESTION # 29
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. Copy the Object Storage bucket to a block volume.
- D. Create a lifecycle policy to regularly send data from the Standard to Archive storage.
Answer: A
Explanation:
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.
NEW QUESTION # 30
What is a key advantage of utilizing administrator roles for access control within OCI IAM identity domains?
- A. Can be used to grant access to resources outside the identity domain
- B. Provide granular control over user access to specific compartments
- C. Offer a wider range of permission combinations
- D. Simplify access management by eliminating policy creation
Answer: D
Explanation:
In Oracle Cloud Infrastructure (OCI) Identity and Access Management (IAM), administrator roles play a significant role in managing access:
Simplification of Access Management: Utilizing administrator roles allows you to simplify access management by eliminating the need to create complex IAM policies manually. These roles come with predefined permissions that cover common administrative tasks, reducing the effort needed to manage access controls.
Granular Control: While administrator roles provide a broad range of permissions, they may not offer the same level of granularity as custom policies.
Other Benefits:
Offer a wider range of permission combinations (A): While custom policies can offer more specific combinations, administrator roles are designed to cover a broad range of tasks.
Granting Access Outside Identity Domain (C): Administrator roles are generally scoped to their identity domain and do not provide cross-domain access.
Granular Control (D): Although administrator roles simplify management, custom policies are typically used when granular control over specific compartments or resources is needed.
Relevant OCI Documentation:
OCI IAM Roles Overview
This resource provides detailed information on how roles and policies are used in OCI to manage access.
NEW QUESTION # 31
Which is NOT a necessary step to complete this setup for instance principals?
- A. Create a policy granting permissions to the dynamic group to access services in your compartment or tenancy.
- B. Create a dynamic group with matching rules to specify which instances can make API calls against services.
- C. Generate Auth Tokens to enable instances in the dynamic group to authenticate with APIs.
- D. Deploy the application and the SDK to all the instances that belong to the dynamic group.
Answer: C
Explanation:
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
NEW QUESTION # 32
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