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Oracle 1Z1-921 Exam Syllabus Topics:

Oracle MySQL 2021 Implementation Essentials Sample Questions:

1. 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 checked for errors and repaired.
C) The table statistics will be stored.
D) The table will be optimized and replicated.

2. Which MySQL Enterprise Edition plug-in replaces real values with substitutes?

A) MySQL Enterprise Transparent Data Encryption (TDE)
B) MySQL Enterprise Data Masking and De-identification
C) MySQL Enterprise Scalability
D) MySQL Enterprise Audit
E) MySQL Enterprise No-Login Authentication

3. Which two methods help prevent MySQL security risks?

A) Ensure that MySQL accounts have short and easy passwords.
B) Use the secure installation script "mysql_alays_secure_installation".
C) Use a firewall to control access to MySQL ports.
D) Allow unauthorized clients to connect to the server.
E) Grant only permissions that a user requires.
F) Transmit plain (unencrypted) data over networks.

4. Which features of MySQL Enterprise Edition should you use to proactively monitor and track data changes in your databases?

A) MySQL Audit and MySQL Workbench
B) MySQL Workbench and MySQL Enterprise Firewall
C) SQL Enterprise Monitor and MySQL Enterprise Authentication
D) MySQL Enterprise Monitor and MySQL Audit

5. What SQL keyword must be specified when creating a foreign key constraint?

A) the SET_FOREGIN variable in the my .cnf file
B) an index on the foreign key
C) unique PRIMARY key values for both child and parent tables
D) a TRIGGER on the child table for cascading delete statements
E) a REFERENCES in the child table to the parent table

Solutions: