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Oracle 1z0-915-1 Exam Syllabus Topics:

Topic	Details
Topic 1	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 2	HeatWave Cluster: For database performance specialists and cloud architects, this section of the exam covers
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	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 5	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 6	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.

Oracle MySQL HeatWave Implementation Associate Rel 1 Sample Questions (Q29-Q34):

NEW QUESTION # 29
You want to connect to a DB system with MySQL Shell.
DB system endpoint IP address: 10.0.1.221
Username: admin
Password: MySQL8.0
Which two commands work? (Choose two.)

A. mysqlsh -h 10.0.1.221 -u admin -p MySQL8.0
B. mysqlsh -host 10.0.1.221 -user admin -password MySQL8.0
C. mysqlsh -h10.0.1.221 -uadmin -pMySQL8.0
D. mysqlsh mysql://MySQL8.0:admin@10.0.1.221
E. mysqlsh mysql://admin:MySQL8.0@10.0.1.221

Answer: C,E

Explanation:
To connect to a MySQL DB system using MySQL Shell, you can use several command-line formats. Here, we will analyze the provided options:
A:mysqlsh -h 10.0.1.221 -u admin -p MySQL8.0
* Incorrect format. The password should not be directly placed after the-pflag without a space or equals sign.
B:mysqlsh mysql://MySQL8.0:admin@10.0.1.221
* Incorrect format. The username should come before the password in the URL.
C:mysqlsh mysql://admin:MySQL8.0@10.0.1.221
* Correct format. This is a valid way to connect using a URL-like format whereadminis the username,MySQL8.0is the password, and10.0.1.221is the host.
D:mysqlsh -h10.0.1.221 -uadmin -pMySQL8.0
* Correct format. This is a valid way to connect using flags, with no spaces between the flags and their values.
E:mysqlsh -host 10.0.1.221 -user admin -password MySQL8.0
* Incorrect format. MySQL Shell uses-h,-u, and-pfor specifying host, username, and password respectively.

NEW QUESTION # 30
Which placement is NOT valid for a high-availability DB system? (Note: AD refers to availability domain and FD refers to fault domain.)

A. Primary instance: AD1-FD3; Secondary instance 1: AD2-FD2; Secondary instance 2: AD3-FD3
B. Primary instance: AD1-FD1; Secondary instance 1: AD1-FD2; Secondary instance 2: AD1-FD3
C. Primary instance: AD1-FD3; Secondary instance 1: AD1-FD2; Secondary instance 2: AD1-FD3
D. Primary instance: AD1-FD1; Secondary instance 1: AD2-FD2; Secondary instance 2: AD3-FD3

Answer: C

Explanation:
In a high-availability DB system, the placement of primary and secondary instances should ensure redundancy across different availability domains (ADs) and fault domains (FDs) to minimize downtime and data loss. The placement mentioned in option D is not valid because itplaces the primary and secondary instances in the same availability domain and fault domain, which does not provide high availability.

NEW QUESTION # 31
Which two are true about creating a Bastion service to connect to a MySQL DB system? (Choose two.)

A. TheBastion subnet must have an ingress rule to allow stateful connections on the MvSQL DB system port number.
B. The Bastion CIDR block allowlist must include the IP address of all valid client machines.
C. The Bastion CIDR block allowlist must include the IP address of the DB system.
D. The Bastion service must have a public IP address.
E. The Bastion service must be in the same VCN as the DB system.

Answer: A,B

Explanation:
When creating a Bastion service to connect to a MySQL DB system, the following are true:
* The Bastion CIDR block allowlist must include the IP address of all valid client machines(Answer C):
This ensures that only the IP addresses specified in the allowlist can access the Bastion service, enhancing security by restricting access to known clients.
* The Bastion subnet must have an ingress rule to allow stateful connections on the MySQL DB system port number(Answer E): This allows the Bastion service to communicate with the MySQL DB system by permitting traffic through the necessary ports.
References:
* OCI Bastion Service Documentation
* Setting Up Bastion with MySQL DB System

NEW QUESTION # 32
There are more than 10 concurrent users running queries on the DB system. The airport_geo table has been loaded successfully into a HeatWave cluster.
You want to run this query:
SELECT DISTINCT country FROM airport_geo ORDER BY country;
How do you determine whether the query is offloaded to the HeatWave cluster for execution?

A. Query the rpd_tables table in performance_schema.
B. Check the value of the rapid_query_offload_count global status variable.
C. View the Query Execution Plan of the query by running EXPLAIN.
D. Check the value of the hw_data_scanned global status variable.

Answer: B

Explanation:
To determine whether a query is offloaded to the HeatWave cluster for execution,check the value of the rapid_query_offload_countglobal status variable(Answer B).
* rapid_query_offload_count: This variable indicates the number of queries that have been offloaded to the HeatWave cluster. By checking its value before and after running the query, you can determine if the query was offloaded.
Steps:
* Connect to the MySQL DB system.
* RunSHOW GLOBAL STATUS LIKE 'rapid_query_offload_count';before and after executing the query to see if the count increases, indicating offloading.
References:
* MySQL HeatWave Documentation
* Monitoring HeatWave Status Variables

NEW QUESTION # 33
You want to create a read replica on a DB system.
Which is true about the read replica?

A. lt must have at least 64 GB of memory.
B. It must be a bare metal shape
C. It must have at least 4 OCPUs.
D. It must have at least 1 TB of storage

Answer: A

Explanation:
For a read replica on a DB system,it must have at least 64 GB of memory(Answer D). This requirement ensures that the read replica has sufficient resources to handle read operations and maintain performance consistency with the primary DB system.
References:
* OCI MySQL Read Replicas Documentation

NEW QUESTION # 34
......

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Reliable 1z0-915-1 Exam Bootcamp | 1z0-915-1 Latest Exam Papers

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