Oracle 1Z1-921 Questions & Answers - in .pdf
- Total Q&A: 78
- Update: Jun 02, 2026
- Price: $59.99
- Vendor: Oracle
- Exam Code: 1Z1-921
- Exam Name: MySQL 2021 Implementation Essentials
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- Total Q&A: 78
- Update: Jun 02, 2026
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- Exam Code: 1Z1-921
- Exam Name: MySQL 2021 Implementation Essentials
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.Oracle MySQL 2021 Implementation Essentials Sample Questions:
1. 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 MASTER and SLAVE are grouped as one instance for monitoring.
B) The mysql.inventory table on SLAVE is cloned with the same content as MASTER, which has the same server UUID.
C) The SLAVE and MASTER instances are started with the same configured value for the option - - monitor_server_uuid.
D) All the MySQL instances (Master and Slave) have the same server_uuid in <datadir>/auto.cnf.
E) The mysql.instance table on SLAVE is cloned with the same content as MASTER, which has the same server UUID.
2. 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 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.
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 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.
3. The slave connects to the master and asks for updated records. What command was issued for this to happen?
A) SLAVE START
B) START SLAVE
C) RUN SLAVE
D) SLAVE RUN
E) START RUN SLAVE
4. Which three are requirements for MySQL Group Replication (GR)?
A) Primary keys are required on every replicated table.
B) The use of global transaction identifiers is required.
C) The minimum number of required nodes for achieving a consensus is two.
D) GR only works with MySQL versions 8.0.12 or higher.
E) Data to be replicated must be stored in the InnoDB transactional storage engine.
F) The binary log format must be set to mixed.
5. Which two statements are true about MySQL Enterprise Firewall?
A) MySQL Enterprise Firewall is available only in MySQL Enterprise versions 5.7.10.and later.
B) The firewall functionality is dependent upon SHA-256 and ANSI-specific functions built in to the mysql.firewall table. These functions cannot be deleted, even by the root user.
C) Server-side plug-ins named MYSQL_FIREWALL_USERS and MYSQL_FIREWALL-WHITELIST implement INFORMATION_SCHEMA tables that provide views into the firewall data cache.
D) On Windows systems, MySQL Enterprise Firewall is controlled and managed by using the Windows Internet Connection Firewall control panel.
E) MySQL Enterprise Firewall shows only notifications blocked connections, which originated outside of your network's primary domain.
F) System tables named firewall_users and firewall_whitelist in the mysql database provide persistent storage of firewall data.
Solutions:
| Question # 1 Answer: A,E | Question # 2 Answer: B,D | Question # 3 Answer: A | Question # 4 Answer: A,E,F | Question # 5 Answer: C,F |
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