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Oracle MySQL 2021 Implementation Essentials Sample Questions:

1. Which three are characteristics of the JSON data type?

A) It is based on the TEXT data type.
B) Key or array references enable quick read-access to look up document elements directly.
C) It validates the JSON syntax on insert or merge.
D) Comparisons of JSON values are not case-sensitive.
E) It supports indexing directly against the JSON-defined column.
F) A set of SQL functions substantially support the SQL utilization of the data type.

2. Which is a correct example of creating an Enterprise Encryption function?

A) CREATE FUNCTION asymmetric_decrypt RETURNS STRING SONAME ,openss1_udf.so,;
B) INSERT INTO t1 (key_co1) FUNCTION(CREATE_ASYMMETRIC_PRIV_KEY(,RSA,, 1024));
C) VALIDATE FUNCTION create_asymmetric_priv_key WITH ,openssl_udf.so';
D) SET @function = CREATE_ASYMMETRIC_PRIV_KEY(@algo, @key_len);

3. What is true about MySQL Enterprise Transparent Data Encryption (TDE)?

A) Enables data-at-rest encryption by encrypting the physical files of the database.
B) Data is encrypted automatically, in real time, after it is written to storage.
C) Encryption key is stored in a centralized key memory location
D) Tablespace keys are managed manually behind the scenes.

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

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

5. 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) Adding a memcached-tier for caching data and objects in RAM to reduce the number of times an external data source must be read.
E) Changing the system setting with memory stickiness to true in order not to swap out mysq1dfrom memory.

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