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

2. Which is true about inserting an additional line in a single document stored in MySQL document store?

A) You specify the new element,s position in the JSON_ARRAY_INSERT statement.
B) Any new lines can only be inserted at the end of the document.
C) The path specified must be an array position past the end of an array using the JSON_POSITION statement.
D) You cannot insert a single line, you have to replace the entire document with a new document.

3. You want to create an encrypted table. So, you enter this command:
CREATE TABLE 'test_encryption2% (
'id' int(10) unsigned NOT NULL AUTO_INCREMENT,
'server_name' varchar(15) NOT NULL,
PRIMARY KEY ('id') ) ENGINE=MYISAM AUTO_INCREMENT=l DEFAULT CHARSET=latin1 ENCRYPTION = 'Y1; You receive the following error:
ERROR 1031 (HY000): Table storage engine for 'test_encryption2' doesn't have this option Which statement correctly explains the reason for this error?

A) The encryption feature only works with InnoDB tables. You are creating a MylSAM table, and it is causing the error.
B) The term "server_name" is a reserved MySQL term. You cannot use it for the new table. This is what is causing the error.
C) You cannot use the AUTO_INCREMENT option to create an encrypted table. This is what is causing the error.
D) The test_encryption2 already exist. You are not using the correct option to recreate it and it is causing the error.

4. The user -os-user'@"localhost" was created to monitor connections and shut down the server, and was granted these privileges:
GRANT PROCESS, SHUTDOWN ON *.* TO "OS-user*@"localhost';
Which three are commands that the os-user can execute?

A) SHOW PROCESSLIST;
B) SHUTDOWN
C) SHOW STATUS;
D) GRANT PROXY
E) SHOW BINLOG EVENTS;
F) KILL PROCESS;

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

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

Solutions: