Free Oracle 1Z0-920 Exam Actual Questions & Explanations

Last updated on: Jun 3, 2026

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Question No. 1

Which Oracle product is certified to work with MySQL Enterprise Edition?

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Question No. 2

Which three are characteristics of the JSON data type?

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Correct Answer: B, C, E

Question No. 3

MySQL Enterprise Masking and De-identification can hide or obfuscate sensitive data, by controlling how the data appears. Which three are MySQL Enterprise Masking and De-identification functions?

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Correct Answer: B, C, E

Robust Data Masking Functions

MySQL Enterprise Masking and De-identification can hide or obfuscate sensitive data, by controlling how the data appears. It features robust masking algorithms including selective masking, blurring, random data substitution and other special techniques for credit card numbers, account numbers and other personally identifiable information, enabling IT departments to maintain structural rules to de-identify values. MySQL Enterprise Masking and De-identification functions include:

* Selective Masking - Obscures a particular portion of numbers or strings such as phone numbers, and payment card numbers.

* Strict or Relaxed Masking - Implement strict or relaxed masking to obfuscate data.

* Random Data Substitution - Replace real values with random values while maintaining format consistency.

* Blurring - Add a random variance to existing values such as randomized numeric ranges for salaries.

* Dictionary Substitution - Randomly replace values from task specific dictionaries.

* Blacklisting and Substitution - Replace specifically blacklisted data, but leave non-blacklisted in place.

https://www.mysql.com/products/enterprise/masking.html#:~:text=Robust%20Data%20Masking%20Functions,controlling%20how%20the%20data%20appears.&text=Random%20Data%20Substitution%20%2D%20Replace%20real,values%20while%20maintaining%20format%20consistency.


Question No. 4

You execute this statement:

SELECT NULL=NULL;

What is the result?

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Correct Answer: B

Question No. 5

Which two statements are true about MySQL Enterprise Firewall?

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Correct Answer: D, E