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Oracle 1Z0-921 Exam Syllabus Topics:

Oracle MySQL 2021 Implementation Essentials Sample Questions:

Question 1

Which best describes database horizontal scale-out architecture deployment in MySQL in a read-heavy environment?

A. Adding more MySQL servers and sharing the same dacadir on a shared storage component like NFS.
B. Increasing the memory capacity so that there is a larger pooling buffer to increase the database read performance.
C. Deploy MySQL read-only slaves utilizing replication so that the slaves can be used for reads.
D. Increasing the storage capacity so that the database can store more data to scale.
E. Allocating more CPU to the database instance to improve throughput performance.

Question 2

Which statement adds a column with the largest integer data type?

A. ALTER TABLE SCIENTIFIC ADD scientific_value INTEGER;
B. ALTER TABLE SCIENTIFIC ADD scientific_value DECIMAL(15,10);
C. ALTER TABLE SCIENTIFIC ADD scientific_value DECIMAL(10,10);
D. ALTER TABLE SCIENTIFIC ADD scientific_value BIGINT;

Question 3

Which three installation options are available for installing the MySQL Enterprise Monitor/Agent on Linux?

A. A MySQL Enterprise Monitor to remotely deploy the MySQL Monitor Agent
B. A script (with an option file) for installing MySQL Enterprise Monitor, Agent, and a MySQL Repository database
C. A GUI for installing MySQL Enterprise Monitor, Agent, and a MySQL Repository database
D. A CLI-based wizard MySQL Enterprise Monitor, Agent, and a MySQL Repository database
E. A browser-based wizard to remotely deploy the MySQL Monitor Agent

Question 4

You have a backup image file that is backed up using MySQL Enterprise Backup with the -compress option:
/home/mysq1/backup/full/mybackup/myimage. Img

You are required to perform a database restore to a new machine to provision the database. Which command can provision the new database in the datadir as /home/mysql/data/MEB?

A.

B.

C.

D.

E.

Question 5

When should you perform a backup in a MySQL database?
Response:

A. After every successful query execution.
B. After critical data updates or before making significant changes to the database.
C. Only when the database size exceeds a certain limit.
D. Only during scheduled maintenance windows.

Solutions: