Oracle Oracle MySQL 1Z0-921

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Oracle MySQL 2021 Implementation Essentials Sample Questions:

1. Which two statements about the download of MySQL Enterprise Backup are correct?

A) MySQL Enterprise Backup is a separate package from MySQL Enterprise Edition. It can be downloaded from https://edelivery.oracle.com.
B) MySQL Enterprise Backup comes with MySQL Utilities Package, which is available for download publicly on http://www.mysql.com.
C) MySQL Enterprise Backup comes with all MySQL editions including community edition.
D) MySQL Enterprise Backup comes with MySQL Connector and is freely available for download.
E) MySQL Enterprise Backup can be downloaded from My Oracle Support (MOS).

2. Which two statements are true about MySQL Enterprise Firewall?

A) MySQL Enterprise Firewall shows only notifications blocked connections, which originated outside of your network's primary domain.
B) System tables named firewall_users and firewall_whitelist in the mysql database provide persistent storage of firewall data.
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) MySQL Enterprise Firewall is available only in MySQL Enterprise versions 5.7.10.and later.
E) 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.
F) On Windows systems, MySQL Enterprise Firewall is controlled and managed by using the Windows Internet Connection Firewall control panel.

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

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

4. You want to create the user named jenny for any host server with the password secretpassi23! and the password is expired? Which command should you use?

A) CREATE USER ,jenny *@,localhost, IDENTIFIED WITH HASH PASSWORD(,SecretPass123!,)
B) CREATE USER ,jenny,@,%, IDENTIFIED WITH sha256_password BY 'SecretPass123!,;
C) CREATE USER ,jenny,@'%, WITH HASHED(password,,SecretPass123!,), PASSWORD EXPIRE
D) CREATE USER ,jenny,@,localhost, IDENTIFIED BY (,SecretPass123!,,,256,, Expired)
E) CREATE USER ,jenny,0,%t IDENTIFIED BY ,SecretPass123!, PASSWORD EXPIRE;

5. Which query will find rows in a table that have no counterpart in another table?

A) SELECT *FROM table1 INNER JOIN table2 ON table1.id=table2.id WHERE table1.id=! table2.id;
B) SELECT left_tbl.*FROM left_tbl LEFT JOIN right_tbl ON left_tbl.id=right_tbl.idWHERE right_tbl.id IS NULL;
C) SELECT t1.name, t2.name2FROM employee AS t1 INNER JOIN info AS t2 ON t1.name= t2.name2;
D) SELECT t1.name, t2.name2FROM employee t1 INNER JOIN info t2 WHERE t1.name=t2.name;

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