Oracle 1Z1-921 : MySQL 2021 Implementation Essentials

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Oracle 1Z1-921 Exam Syllabus Topics:

Oracle MySQL 2021 Implementation Essentials Sample Questions:

1. The MySQL Replication Environment (Master and Slave) is prepared.
What two are options for connecting a Java application to the MySQL Master and Slave?

A)

B)

C)

D)

2. You have been using mysqldump for logical backups of your MySQL databases. Your MySQL database size has been growing. Which two options can reduce the backup size and speed up the backup time?

A) Use mysqldump with the - -changesonly option.
B) Use MySQL Enterprise Backup with the - -size=compress to compress the backup file.
C) Use mysqldump with - -incremental together with the - -compress option to back up incrementally based on previous full backup and compress the incremental backup files.
D) Use MySQL Enterprise Backup with the - - incremental policy to back up incrementally based on previous full backup.
E) Use MySQL Enterprise Backup with the - -compress option to compress the backup files and use - - compress-level to select the level of compression.

3. The slave connects to the master and asks for updated records. What command was issued for this to happen?

A) START SLAVE
B) SLAVE START
C) START RUN SLAVE
D) RUN SLAVE
E) SLAVE RUN

4. An Oracle Cloud Infrastructure customer already has many database instances configured and running in the cloud; however, they are reporting that they are unable to create any more instances.
What could be the problem?

A) The customer reached the database instance limit of 32.
B) The customer account might have reached resource quota/limits.
C) The customer has not kept up with their patching requirements; new instances cannot be created unless the majority or the template of existing instances are up-to-date.
D) The customer does not have proper user rights.

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

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

Solutions: