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Oracle MySQL 2021 Implementation Essentials Sample Questions:

1. Which best describes database horizontal scale-out architecture deployment in MySQL in a read-heavy environment?

A) Allocating more CPU to the database instance to improve throughput performance.
B) Increasing the storage capacity so that the database can store more data to scale.
C) Increasing the memory capacity so that there is a larger pooling buffer to increase the database read performance.
D) Adding more MySQL servers and sharing the same dacadir on a shared storage component like NFS.
E) Deploy MySQL read-only slaves utilizing replication so that the slaves can be used for reads.

2. You need to change the password level for a test system.
Which two allow to change this level before you create new test user/passwords?

A) SET GLOBAL validate_password_policy=,new level,;
B) SET GLOBAL force_password_complex_policy=0;
C) Add validate_password=,new level, in the [security] section of the MySQL configuration file.
D) Add validate_password_policy=,new level, in the [mysqld] section of the MySQL configuration file.

3. Which three prerequisites are needed for creating an Oracle Linux VM instance in the Oracle Cloud Infrastructure?

A) subnet configured on a Virtual Cloud Network (VCN)
B) bare metal Oracle Linux shape
C) Custom Image
D) Object Storage
E) existing VCN
F) ssh key pair

4. Which three are recommended configurations for installing and running MySQL InnoDB Cluster?

A) use SSD,s for data and replication logs
B) The number of machines per group must be 3, 5, 7 or 9.
C) isolated machine resources
D) Groups must be in even numbers; 2, 4, 6, 8.
E) Use Network-attached storage (NAS) for the data files.
F) Networks must be in separate regions.
G) smaller VM,s work best - with a maximum of eight vCPU,s and 16GB of RAM

5. Which three statements describe MySQL Enterprise Backup?

A) MySQL Enterprise Backup can be used to import/export data from on-premises MySQL installations.
B) MySQL Enterprise Backup can be used to send backups to Oracle Cloud Infrastructure Storage Service.
C) MySQL Enterprise Backup is an optimized backup based on mysqldump with optimized row locking.
D) MySQL Enterprise Backup offers backup based on Oracle RMAN with optimized row locking.
E) MySQL Enterprise Backup provides the point-in-time recovery functionality.

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