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Oracle 1Z0-921 Exam Syllabus Topics:

Oracle MySQL 2021 Implementation Essentials Sample Questions:

1. Which component of MySQL Enterprise Monitor provides trend analysis and capacity planning for MySQL databases?
Response:

A) MySQL Advisors
B) MySQL Query Analyzer
C) Query Analyzer
D) MySQL Dashboard

2. When should you perform a backup in a MySQL database?
Response:

A) Only during scheduled maintenance windows.
B) Only when the database size exceeds a certain limit.
C) After every successful query execution.
D) After critical data updates or before making significant changes to the database.

3. What are the two main components required to set up persistent storage for MySQL on Kubernetes?
Response:

A) Secret and Deployment
B) PVC (Persistent Volume Claim) and ConfigMap
C) Pod and ReplicaSet
D) PVC (Persistent Volume Claim) and PV (Persistent Volume)

4. Your newly-created Oracle Cloud Infrastructure instance is not available for login in. Which is a valid reason for this issue?

A) Only root is allowed to access from non-localhost.
B) The OCI instance is still in the "creation" process.
C) You forgot to enable port 3306.
D) The opc user can be used to access MySQL only with the created SSH-Key.
E) You forgot to create the correct SSL/TLC certificate during the setup process.

5. An existing MySQL Database environment has been doing backup and restore in a logical way by using the mysq1dump and mysq1 client utilities. When the backup is started using mysqldump with single-transaction mode, the existing application has long wait time. When the restore is required, it takes more than three hours to restore.
What two are benefits of using mysqlbackup from MySQL Enterprise Backup in this situation?

A) mysqlbackup utilities dump the full database into a SQL file, which is imported into the mysql client in single-thread mode. mysqlbackup restores data from physical backups. Physical backup methods are faster than logical methods because they involve only file coping without conversion.
B) MySQL Enterprise Backup does not back up system data so that it is much faster.
C) mysqlbackup can back up tables with the InnoDB engine without blocking. The backup is hot with InnoDB. Together with Incremental Backup, mysqlbackup from MySQL Enterprise Backup shortens the backup windows.
D) MySQL Enterprise Backup provides tape backup integration by default. It has the virtual tape option, which allows backup to tape device directly without extra third-party software integration.
E) mysqlbackup from MySQL Enterprise Backup allows logical backup with concurrency built in to get faster backup speed and restoration speed.

Solutions: