Practice questions and their answers

Let’s try to practice the material in this chapter with a few example questions.

Questions

1. If a web service is synchronous, it means…
   1. Your system will wait for a response before continuing
   2. Your system does not have to wait for a response
   3. You are syncing a web service to your system
   4. Web services cannot be synchronous
2. When conducting a survey, it is best practice to ask about specific events that happened in the past and request a text-based answer. True or false?
   1. True
   2. False
3. ETL stands for…
   1. Extract, Transmit, Load
   2. Estimate, Time, Load
   3. Extract, Transform, Load
   4. Exact, Time, Load
4. The process of taking transactional data that has already been stored, aggregating it, and moving it to a data warehouse is called what?
   1. OLTP
   2. OLAP
   3. API
   4. Web service
5. You are provided with a long and complicated query that takes a long time to run, but you need several pieces of information from it. What is the most efficient approach?
   1. Run the query...