Oracle MySQL 2021 Implementation Essentials : 1Z1-921

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Oracle 1Z1-921 Exam Syllabus Topics:

Oracle MySQL 2021 Implementation Essentials Sample Questions:

1. 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 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.
C) MySQL Enterprise Backup does not back up system data so that it is much faster.
D) mysqlbackup from MySQL Enterprise Backup allows logical backup with concurrency built in to get faster backup speed and restoration speed.
E) 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.

2. Which Oracle product is certified to work with MySQL Enterprise Edition?

A) Oracle Enterprise Backup
B) Oracle Enterprise Manager
C) Oracle Data Pump
D) Oracle Application Express

3. You execute this statement:
SELECT NULL=NULL;
What is the result?

A) 1
B) NULL
C) 0
D) FALSE
E) TRUE

4. You want to create the user named jenny for any host server with the password secretpassi23! and the password is expired? Which command should you use?

A) CREATE USER ,jenny,0,%t IDENTIFIED BY ,SecretPass123!, PASSWORD EXPIRE;
B) CREATE USER ,jenny,@,%, IDENTIFIED WITH sha256_password BY 'SecretPass123!,;
C) CREATE USER ,jenny,@,localhost, IDENTIFIED BY (,SecretPass123!,,,256,, Expired)
D) CREATE USER ,jenny,@'%, WITH HASHED(password,,SecretPass123!,), PASSWORD EXPIRE
E) CREATE USER ,jenny *@,localhost, IDENTIFIED WITH HASH PASSWORD(,SecretPass123!,)

5. 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 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.
B) The customer does not have proper user rights.
C) The customer reached the database instance limit of 32.
D) The customer account might have reached resource quota/limits.

Solutions: