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Oracle 1z0-915-1 Exam Syllabus Topics:

Topic	Details
Topic 1	Provisioning and Connecting DB systems: For system administrators and database engineers, this part of the exam covers identifying VCN requirements for provisioning DB systems, connecting to DB systems with OCI Bastion, connecting to DB systems with MySQL Shell, connecting to DB systems with OCI Cloud Shell, connect to DB system with OCI SQL Worksheet, and authenticate DB system with OCI Identify Access Management credentials.
Topic 2	MySQL HeatWave Service: For database administrators, cloud architects, and DevOps engineers, this section of the exam covers identifying key features and benefits, describing MySQL HeatWave architecture, defining MySQL HeatWave terminology, and identifying MySQL HeatWave limitations.
Topic 3	High Availability: For system reliability engineers and database architects, this domain of the exam covers how to enable and disable the high availability of a DB system, explain placement considerations for a high availability DB system, distinguish between switchover and failover, etc.
Topic 4	Managing DB systems: For network administrators and cloud infrastructure specialists, this domain of the exam covers demonstrating a command of DRG and DRG Attachments, applying BGP in the OCI environment, evaluating OCI VPN Services, and validating the various FastConnect products from OCI.
Topic 5	Backing up and restoring DB systems: For database administrators and disaster recovery specialists, this section of the exam covers backing up and restoring a DB system, managing automatic backups, and performing point-in-time recovery.
Topic 6	Describe the architecture of the HeatWave cluster, adding a HeatWave cluster to a DB system, and determine whether a query is offloaded to HeatWave cluster for execution.
Topic 7	HeatWave Cluster: For database performance specialists and cloud architects, this section of the exam covers
Topic 8	Data Migrations: For data migration specialists and database administrators, this part of the exam covers creating a DB system with data import, importing data into a DB system, and exporting data from MySQL servers and DB systems.
Topic 9	MySQL HeatWave Configurations: For database administrators and performance tuning specialists, this part of the exam covers creating custom configurations, comparing configurations, describing the effects of changing dynamic and non-dynamic variables, and updating a DB system configuration.
Topic 10	Read Replicas: For database architects and replication specialists, this domain of the exam covers creating and managing read replicas, describing the read replica load balancer, connecting to a read replica, etc.

Oracle MySQL HeatWave Implementation Associate Rel 1 Sample Questions (Q35-Q40):

NEW QUESTION # 35
The following statements execute successfully:
CALL sys.ML_TRAIN('ml_data.iris', 'class', NULL, @model);
SELECT @model;
Which three are true? (Choose three.)

A. The statements create a classification model.
B. The generated model handle is shown in the output.
C. The target column is class.
D. The statements validate the data set but do not create a model.
E. The training data set is obtained from the ml_data table in the iris schema.

Answer: A,B,C

Explanation:
The statementsCALL sys.ML_TRAIN('ml_data.iris', 'class', NULL, @model);andSELECT @model;are used to create and retrieve a machine learning model in MySQL HeatWave AutoML. The following are true:
* The generated model handle is shown in the output(Answer B): After training the model, the handle (identifier) for the model is stored in the@modelvariable and can be retrieved with theSELECT
@model;statement.
* The statements create a classification model(Answer C): TheML_TRAINprocedure is used to create a classification model since the target column (class) indicates a classification problem.
* The target column is class(Answer E): The second argument in theML_TRAINcall specifies the target column for the machine learning model, which isclassin this case.
References:
* MySQL HeatWave AutoML Documentation
* ML_TRAIN Procedure Documentation

NEW QUESTION # 36
Which is true about automatic DB system version upgrades?

A. The DB system is upgraded to the most recent release.
B. You must specify the next version to be used before the upgrade.
C. The DB system is never upgraded automatically.
D. The DB system is upgraded to the next release in sequence.

Answer: D

Explanation:
Automatic DB system version upgrades in OCI are performed to the next release in sequence. This means that the system is upgraded to the next available version rather than skipping to the most recent release, ensuring a stable and tested upgrade path.

NEW QUESTION # 37
You want to enable high availability of a stand-alone DB system. Which two conditions are required? (Choose two.)

A. The DB system point-in-time recovery must be enabled.
B. The DB system delete protection must be enabled.
C. The DB system automatic backup must be enabled.
D. The DB system crash recovery must be enabled.
E. The DB system must be active.

Answer: C,E

Explanation:
To enable high availability for a stand-alone DB system, the following conditions are required:
* The DB system must be active(Answer D): The DB system needs to be in an active state to enable high availability features.
* The DB system automatic backup must be enabled(Answer E): Automatic backups must be enabled to ensure data protection and facilitate failover operations.
Steps:
* Ensure the DB system is running and operational.
* Enable automatic backups through the OCI Console or API.
References:
* MySQL High Availability Documentation
* Automatic Backups Documentation

NEW QUESTION # 38
A MySQL DB system has an endpoint in an OCI VCN subnet. The VCN is not configured with VCN peering, VPN access, and FastConnect. You want to connect to the MySQL DB system directly from an OCI Cloud Shell session.
Which two are true? (Choose two.)

A. The VCN subnet of the Cloud Shell session must have an Internet Gateway in its route table.
B. The VCN subnet of the Cloud Shell session must have a Service Gateway in its route table.
C. You must attach the Cloud Shell session to a VCN subnet that can connect to the MySQL DB system.
D. The MySQL DB system subnet must be in the Cloud Shell tenancy home region.
E. You must install mysql client programs in the Cloud Shell session.

Answer: C,D

Explanation:
To connect to a MySQL DB system from an OCI Cloud Shell session when the VCN is not configured with VCN peering, VPN access, or FastConnect, the following must be true:
A:You must attach the Cloud Shell session to a VCN subnet that can connect to the MySQL DB system: The Cloud Shell must be in the same network or have a route to the network containing the MySQL DB system.
C:The MySQL DB system subnet must be in theCloud Shell tenancy home region: Cloud Shell sessions operate within the OCI home region, so the target MySQL DB system must be accessible from within the same region.

NEW QUESTION # 39
Automatic backup retention of a DB system is disabled. Which operation deletes all automatic backups of the DB system?

A. Disabling delete protection
B. Deleting the DB system
C. Enabling point-in-time recovery
D. Disabling point-in-time recovery

Answer: B

Explanation:
When automatic backup retention of a DB system is disabled,deleting the DB system(Answer C) will delete all automatic backups of the DB system.
* Automatic Backups: These are backups created automatically by the OCI service to ensure data protection.
* Backup Deletion: If automatic backups are disabled and you delete the DB system, all associated automatic backups are also deleted. This operation is irreversible, and you should ensure that necessary backups are taken before deleting the DB system.
References:
* OCI MySQL Database Service Backup and Restore

NEW QUESTION # 40
......

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