Oracle MySQL 2021 Implementation Essentials - 1Z0-921

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Oracle 1Z0-921 Exam Syllabus Topics:

Oracle MySQL 2021 Implementation Essentials Sample Questions:

1. You execute this statement:
SELECT NULL=NULL;
What is the result?

A) FALSE
B) TRUE
C) 0
D) NULL
E) 1

2. 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.

3. Which is true about inserting an additional line in a single document stored in MySQL document store?

A) You cannot insert a single line, you have to replace the entire document with a new document.
B) The path specified must be an array position past the end of an array using the JSON_POSITION statement.
C) Any new lines can only be inserted at the end of the document.
D) You specify the new element,s position in the JSON_ARRAY_INSERT statement.

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

A) SET @function = CREATE_ASYMMETRIC_PRIV_KEY(@algo, @key_len);
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) CREATE FUNCTION asymmetric_decrypt RETURNS STRING SONAME ,openss1_udf.so,;

5. The replication for a Master and Slave MySQL Servers is up and running. The disk space for Master Server is continuously growing. The binlog size keeps growing. Which two methods can fix the issue?

A) Execute the purge binary logs statement without argument.
B) To safely purge binary log files, perform these steps:
C) On the Master server, disable binlog by removing the --log-bin option.
D) Set the expire_logs_days system variable to expire binary log files automatically after a given number of days.
E) Delete all binlog files manually on the file system to release storage spaces.

Solutions: