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1Z0-921 Exam Questions Dumps, MySQL 2021 Implementation Essentials VCE Collection

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Oracle MySQL 2021 Implementation Essentials Sample Questions (Q13-Q18):

NEW QUESTION # 13
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. MySQL Enterprise Backup does not back up system data so that it is much faster.
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. 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.
D. mysqlbackup from MySQL Enterprise Backup allows logical backup with concurrency built in to get faster backup speed and restoration speed.
E. 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.

Answer: D,E

NEW QUESTION # 14
You have a MySQL Server instance (running with Port# 3306) monitored by the Service Manager in MySQL Enterprise Monitor. You cloned the MySQL Database instance and configured it to be a replicated MySQL instance as Slave using Port# 3316 on the same machine as the Master Server. The replication configuration is working correctly. The Master and Slave Servers are running.
You are trying to add the newly created MySQL Slave instance to the Monitor. The Service Manager in MySQL Enterprise Monitor notifies you that the new instance is successfully added; however, it is not added correctly at the newly added configuration points to the old Master monitored items. The Monitor shows only one monitored MySQL instance for Master and Slave.
Which two are possible reasons for this problem?

A. The SLAVE and MASTER instances are started with the same configured value for the option - - monitor_server_uuid.
B. The MASTER and SLAVE are grouped as one instance for monitoring.
C. The mysql.inventory table on SLAVE is cloned with the same content as MASTER, which has the same server UUID.
D. The mysql.instance table on SLAVE is cloned with the same content as MASTER, which has the same server UUID.
E. All the MySQL instances (Master and Slave) have the same server_uuid in <datadir>/auto.cnf.

Answer: B,D

NEW QUESTION # 15
Which statement is used to create a new MySQL database?
Response:

A. CREATE SCHEMA
B. CREATE DATABASE
C. CREATE TABLE
D. NEW DATABASE

Answer: B

NEW QUESTION # 16
Which three options are valid reasons for using a primary key in a table?

A. exporting data faster with mysqldump
B. to make it easier to change the PRIMARY KEY value
C. automatic storage of data in a sorted order
D. preventing duplicate keys
E. maintaining a history of row insertions or updates
F. increasing performance when using select statements

Answer: A,D,F

NEW QUESTION # 17
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 account might have reached resource quota/limits.
C. The customer does not have proper user rights.
D. The customer reached the database instance limit of 32.

Answer: D

NEW QUESTION # 18
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