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1Z1-921 Valid Exam Topics - 100% Pass Quiz First-grade Oracle Dumps 1Z1-921 Collection

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Oracle MySQL 2021 Implementation Essentials Sample Questions (Q51-Q56):

NEW QUESTION # 51
You are testing a new application and want to use data masking but the database is empty. What option will generate dummy data for you to use for testing?

A. Alter the table with the statement: ALTER TABLE IMPORT DATA WITH data_masking plugin;
B. Use MySQL Enterprise High Availability to access one of the available data tables
C. Execute the sakila-data. sqi script to populate the database
D. Use mysqldump to import data from the sakila_dummy database sample data set.

Answer: A

NEW QUESTION # 52
What is Kubernetes in the context of MySQL?
Response:

A. A database management tool for MySQL.
B. A database engine for MySQL.
C. A cloud service provided by Oracle for MySQL databases.
D. An open-source container orchestration platform.

Answer: D

NEW QUESTION # 53
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 binary log format must be set to mixed.
D. The minimum number of required nodes for achieving a consensus is two.
E. Data to be replicated must be stored in the InnoDB transactional storage engine.
F. GR only works with MySQL versions 8.0.12 or higher.

Answer: A,C,E

NEW QUESTION # 54
The replication for a Master and Slave MySQL Servers is up and running. The disk space for Master Server is continuously growing. The binlog size keeps growing. Which two methods can fix the issue?

A. Delete all binlog files manually on the file system to release storage spaces.
B. Execute the purge binary logs statement without argument.
C. Set the expire_logs_days system variable to expire binary log files automatically after a given number of days.
D. On the Master server, disable binlog by removing the --log-bin option.
E. To safely purge binary log files, perform these steps:

Answer: C,E

NEW QUESTION # 55
Which statement would you use to remove the population column from the city table?

A. ALTER TABLE city DROP population;
B. DELETE population FROM city;
C. ALTER TABLE city DELETE population;
D. DROP population FROM city;
E. ALTER TABLE city LESS population;

Answer: A

NEW QUESTION # 56
......

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