Free Oracle 1Z0-915-1 Exam Questions

Become Oracle Certified with updated 1Z0-915-1 exam questions and correct answers

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Total 200 Questions | Updated On: Mar 02, 2024

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Question 1

Which type of configuration variables CANNOT be modified in MySQL custom configurations?

A : Initialization variables

B : User variables

C : System variables

D : Default user variables

Answer: A

Question 2

You have a DRG attached to a VCN containing your MySQL HeatWave DB system. You need to restrict access to the database from another VCN within the same region. Suggest most effective way to achieve this using DRG and security list configurations?

A : Configure a route table in the remote VCN to direct traffic to the HeatWave system through the DRG.

B : Create a security list rule in the DRG allowing inbound traffic from the HeatWave system's subnet to the remote VCN's subnet.

C : Modify the DRG attachment to restrict access from the remote VCN's CIDR block.

D : Implement a security list rule in the remote VCN's subnet denying inbound traffic from the HeatWave system's subnet.

E : Use IAM policies to control user permissions and restrict access at the database level.

Answer: D

Question 3

You accidentally modified the session_cache_size dynamic variable in your MySQL HeatWave service. Which of the following immediate effects will you observe?

A : Increased HeatWave cluster resource utilization

B : Recalculations of existing materialized views

C : Automatic failover to a standby HeatWave cluster

D : Changes in query execution plans for all running queries

Answer: A

Question 4

Your Bastion session is successfully established, but you encounter connection errors when trying to access the MySQL HeatWave DB system through the tunnel. What is a potential cause of this issue?

A : The security list attached to the Bastion instance doesn't allow outbound connections to the HeatWave DB system port.

B : The HeatWave DB system is running in a different Availability Domain than the Bastion instance.

C : The HeatWave DB system is not configured with the appropriate hostname or service name for the connection attempt.

D : The client application used to connect is incompatible with the MySQL HeatWave protocol.

E : The private subnet where the HeatWave DB system resides doesn't have a route to the Bastion instance subnet.

Answer: A

Question 5

Which AutoML feature can address overfitting in a MySQL HeatWave deployment with a model exhibiting high accuracy?

A : Feature Importance

B : Early Stopping

C : Hyperparameter Tuning

D : Explainability

Answer: B

Page: 1 / 40

Total 200 Questions | Updated On: Mar 02, 2024

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