Practice test – answers and explanations

Now that you have marked up your answers to the questions, in the following sections, we’ll discuss how we can eliminate incorrect choices and mark the correct answer for these questions.

Core data concepts

1. Select the correct statement:
   1. ( ) Extract, transform, and load (ETL) can limit the amount of sensitive data that is transferred to target system.
   2. ( ) Extract, load, and transform (ELT) reduces the amount of time needed to copy substantial amounts of data to the target system.
   3. (X) Extract, load, and transform (ELT) transforms data utilizing a computational resource that is not dependent on the source or target system.
   4. ( ) Extract, transform, and load (ETL) transforms data utilizing a computational resource that is not dependent on the source or target systems

Explanation

• Option A is incorrect because, in ETL processes, it is often not evaluated whether the data is sensitive or not. For this analysis...