Online 1Z0-915-1 Practice Test

Question 1

You are evaluating cost-effectiveness for your MySQL HeatWave FastConnect connection. Which factor significantly impacts the pricing of the service?

Options :

A : The chosen OCI region

B : The type of encryption used

C : The chosen FastConnect provider

D : The overall data transfer volume

Answer: D

Question 2

You are experiencing slow query performance in your MySQL HeatWave service. You notice the hs_scan_batch_size dynamic variable is set to a low value. What impact will increasing this variable likely have?

Options :

A : Reduce memory usage within the HeatWave cluster

B : Decrease the overall number of database scans

C : Increase the number of rows processed per scan, potentially improving performance

D : Require a HeatWave service restart for the change to take effect

Answer: C

Question 3

You need to create a read replica for your MySQL HeatWave service in a different OCI region. Which of the following is the MOST efficient approach?

Options :

A : Clone the entire HeatWave service with its read replica configuration.

B : Create a new HeatWave service in the target region and manually configure a read replica connection.

C : Use the Oracle Cloud Infrastructure (OCI) Console to create a read replica directly from the source HeatWave service.

D : Backup the source HeatWave service and restore it in the target region, including the read replica configuration.

Answer: C

Question 4

How does the MySQL HeatWave architecture handle data distribution and access across multiple HeatWave Compute Nodes?

Options :

A : Broadcast: All nodes receive and process every query, leading to redundant work and potentially decreased performance.

B : Master-slave: One node acts as the master and receives all queries, while other nodes act as slaves and only execute the tasks assigned by the master.

C : Hash partitioning: Data is distributed and stored on specific nodes based on a hashing algorithm, ensuring efficient data access and parallel query execution.

D : Round-robin: Queries are sent to nodes in a circular fashion, potentially leading to uneven workloads and performance bottlenecks

Answer: C

Question 5

What additional configuration is required within the HeatWave DB system to enable OCI IAM-based authentication for user access?

Options :

A : No additional configuration is needed, OCI IAM automatically integrates with HeatWave.

B : The HeatWave Administrator needs to create and map database roles to corresponding OCI IAM groups or users.

C : A custom authentication plugin needs to be developed and deployed within the HeatWave instance.

D : The HeatWave system administrator must configure the OCI IAM service with specific policies for database access.

E : The database schema needs to be modified to accommodate the OCI IAM user identifiers.

Answer: B

EXPERTY DESIGNED 1Z0-915-1 PRACTICE TEST