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Oracle 1Z1-921 Exam Syllabus Topics:

Oracle MySQL 2021 Implementation Essentials Sample Questions:

1. Which three options are valid reasons for using a primary key in a table?

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

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

3. Which statement would you use to remove the population column from the city table?

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

4. The user -os-user'@"localhost" was created to monitor connections and shut down the server, and was granted these privileges:
GRANT PROCESS, SHUTDOWN ON *.* TO "OS-user*@"localhost';
Which three are commands that the os-user can execute?

A) SHOW PROCESSLIST;
B) GRANT PROXY
C) SHOW STATUS;
D) SHOW BINLOG EVENTS;
E) KILL PROCESS;
F) SHUTDOWN

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

Solutions: