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Oracle 1Z1-921 Exam Syllabus Topics:

Oracle MySQL 2021 Implementation Essentials Sample Questions:

1. Which MySQL command is used to grant specific privileges to a user on a database?
Response:

A) GIVE ACCESS
B) GRANT PERMISSIONS
C) GRANT
D) SET PRIVILEGES

2. 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 LESS population;
D) DROP population FROM city;
E) ALTER TABLE city DELETE population;

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

4. Which two deployment architectures could you use for scaling-out database reads?

A) Implementing a three-node, single-primary InnoDB Cluster.
B) Altering the storage engine for all tables to memory to increase performance.
C) Edit the configuration file and increase the value for parallel_read_workers and reboot the server
D) Changing the system setting with memory stickiness to true in order not to swap out mysq1dfrom memory.
E) Adding a memcached-tier for caching data and objects in RAM to reduce the number of times an external data source must be read.

5. The slave connects to the master and asks for updated records. What command was issued for this to happen?

A) RUN SLAVE
B) START SLAVE
C) START RUN SLAVE
D) SLAVE START
E) SLAVE RUN

Solutions: