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To take the 1Z0-921 exam, you must have a solid understanding of MySQL database architecture, SQL programming, and database administration. You should also be familiar with MySQL tools and utilities, such as MySQL Workbench and MySQL Shell.

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The Oracle 1Z1-921 Exam Tests the candidate's knowledge on topics such as MySQL architecture, installation, configuration, security, performance tuning, backup, and recovery. 1Z1-921 exam consists of 70 multiple-choice questions that need to be completed in 105 minutes. To pass the exam, candidates need to score at least 63% or higher. MySQL 2021 Implementation Essentials certification is valid for a period of 18 months, after which the candidate needs to retake the exam to maintain their certification status. Obtaining the Oracle 1Z0-921 certification is an excellent way for individuals to showcase their expertise in MySQL database management and enhance their career prospects.

Oracle MySQL 2021 Implementation Essentials Sample Questions (Q40-Q45):

NEW QUESTION # 40
You have three machines with MySQL Databases running on Linux platform.
Which backup procedures would allow online and remote backup of the MySQL Database on the three machines to a connected Storage NFS?

A. 1. Mount the Remote Storage NFS volume to each of the three machines with proper privilege for the backup OS user to have all access.2. Install MySQL Enterprise Backup on machine which is used to start the backup.3. Start mysqlbackup on only one machine with the installation to back up the databases for the three machines to the mounted volume using - -backup-dir and by giving--hosts=machine1:port1, machine2:port2, machine3:port3.4. Validate the backups using the mysqlbackup program to ensure that the backups created are valid.
B. 1. Mount the Remote Storage NFS volume to each of the three machines with proper privilege for the backup OS user to have all access.2. Install MySQL Enterprise Backup on all three machines.3. Start mysqlbackup on all machines to back up the database to the mounted volume using - -backup-dir.4. Validate the backup using the mysqlbackup program to ensure that the backup created is valid.
C. 1. Mount the Remote Storage NFS volume to each of the three machines with proper privilege for the backup OS user to have all access.2. Install MySQL Workbench on a separate machine, which is used to connect to the three machines to back up and restore.3. Startup MySQL backup from MySQL Workbench to back up the three databases.4. Validate the backup by using MySQL Workbench to ensure that the backup created is valid.
D. 1. Mount the Remote Storage NFS volume to each of the three machines with proper privilege for the backup OS user to have all access.2. Install MySQL Enterprise Backup on the machine that is used to start the backup.3. Start mysqlbackup on only one machine with the installation to back up the databases for the three machines to the mounted volume using - - backup-dir and by specifying -- config-files=my1.cnf, my2.cnf, my3.cnf.my1.cnf, my2cnf, and my3.cnf are the MySQL Database Configuration files on the three machines.4. Validate the backup by using the mysqlbackup program to ensure that the backup created is valid.

Answer: B

NEW QUESTION # 41
You establish MySQL Enterprise Server on Oracle Cloud Infrastructure connection via Secure Shell (SSH).
When accessing a new MySQL Enterprise Edition Oracle Cloud Infrastructure (OCI) instance, you want to use MySQL Enterprise Workbench for SQL and remote management.
What are two ways to successfully configure Workbench based on the MySQL access credentials?

A. Configure the MySQL Router first and based on those settings, you access your MySQL CS instance.
B. Convert the private key to ppk format first. Based on TCP/IP over SSH and based on the created private key, opc-user, and MySQL access credentials, you can access the MySQL CS instance.
C. Configure TCP/IP over SSH and based on the created private key, opc-User, and MySQL access credentials, you can access the MySQL OCI instance.
D. Open the MySQL OCI instance access port 3306. For the MySQL connection, you use this port, and, in addition, you configure the remote management based on SSH based on the provided key.

Answer: D

NEW QUESTION # 42
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. mysqlbackup from MySQL Enterprise Backup allows logical backup with concurrency built in to get faster backup speed and restoration speed.
E. 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.

Answer: A,D

NEW QUESTION # 43
You are using the innoDB engine and the innodb_f ile_per_table option is set.
You delete a significant number of rows of a large table named inventory and issue the command optimize table inventory.
What will happen to the inventory table?

A. The table will be optimized and replicated.
B. The table will be checked for errors and repaired.
C. The table statistics will be stored.
D. The table storage space will be reduced.

Answer: A

NEW QUESTION # 44
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

Answer: A

NEW QUESTION # 45
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