TEST 1Z0-921 QUESTIONS PDF - NEW 1Z0-921 BRAINDUMPS

Test 1Z0-921 Questions Pdf - New 1Z0-921 Braindumps

Test 1Z0-921 Questions Pdf - New 1Z0-921 Braindumps

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Oracle 1Z0-921 certification exam covers a wide range of topics related to MySQL implementation, including installing MySQL, configuring MySQL server options, creating and managing databases and tables, securing MySQL, and optimizing MySQL performance. 1Z0-921 exam also tests the candidate's knowledge of MySQL backup and recovery, replication, and high availability solutions. Candidates who pass the exam will be recognized as Oracle Certified Associates in MySQL 2021 Implementation Essentials.

Oracle 1Z0-921: MySQL 2021 Implementation Essentials certification exam is designed for those professionals who want to gain expertise in implementing and maintaining MySQL databases. 1Z0-921 Exam consists of 60 questions and candidates have 105 minutes to complete it. 1Z0-921 exam is designed to evaluate the knowledge and skills of candidates in areas such as MySQL architecture, security, backup and recovery, and performance tuning.

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Oracle MySQL 2021 Implementation Essentials Sample Questions (Q19-Q24):

NEW QUESTION # 19
Consider this SQL statement which is using the innoDB storage engine and with global AUTOCOMMIT = 1:

What is the result after issuing the rollback command?

  • A. Only the t2 table is created.
  • B. Only the t1 table is created.
  • C. Both the tables, t1 and t2, are not created because there is an explicit ROLLBACK.
  • D. Both the tables, t1 and t2, are created.

Answer: D


NEW QUESTION # 20
By using the asynchronous MySQL Replication architecture, data can be replicated to slaves. Identify three use cases of MySQL Replication.

  • A. It allows backup to be done on the slave without impacting the master.
  • B. You can create a slave server for reporting applications, which get only read access to the slave servers. It off-loads the master server. Additional servers allow different database server configuration.
  • C. It provides multi-master access where the application can write and read data across the database servers.
  • D. MySQL Replication Connector/J (ReplicationDriver) is provided to allow read capability on slave and write capability on master.
  • E. MySQL Enterprise Backup will back up from Slave automatically.

Answer: A,B,E


NEW QUESTION # 21
How does MySQL HeatWave improve query performance?
Response:

  • A. By replicating data across multiple servers.
  • B. By caching the entire database in memory.
  • C. By offloading analytics queries to an in-memory, highly parallel processing engine.
  • D. By automatically creating indexes on frequently used columns.

Answer: C


NEW QUESTION # 22
You need to load the MySQL Enterprise Audit plug-in at database startup and prevent the audit plug-in from being removed at run time.
Which two options should you include in the MySQL configuration file?

  • A. plugin-load=audit_log.so
  • B. LOAD PLUGIN=AUDIT_LOG
  • C. audit_log_permanent=ON
  • D. audit-log=FORCE_PLUS_PERMANENT
  • E. plugin-audit=ON, ALWAYS

Answer: C,D


NEW QUESTION # 23
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. All the MySQL instances (Master and Slave) have the same server_uuid in <datadir>/auto.cnf.
  • B. The mysql.inventory table on SLAVE is cloned with the same content as MASTER, which has the same server UUID.
  • C. The mysql.instance table on SLAVE is cloned with the same content as MASTER, which has the same server UUID.
  • D. The SLAVE and MASTER instances are started with the same configured value for the option - - monitor_server_uuid.
  • E. The MASTER and SLAVE are grouped as one instance for monitoring.

Answer: C,E


NEW QUESTION # 24
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