Intro to Big Data Quiz 2 6 Aug 2023 — Question 21

Select all that apply.

1. A

   Snapshots of source systems can be created using an event capture tool like CDC and then replaying the events in sequence for that time period.

2. B

   A data lake is a collection of data to be provided as input for data science algorithms.

3. C

   Zookeeper is a library for ensuring all services used in big data are monitored, administered and cleaned at appropriate intervals.

4. D

   A single Spark cluster can have multiple “leader” master nodes.

5. E

   Spark is optimized for in-memory computation.

6. F

   Given the RDD underlying a Dataframe, you can recreate the same Dataframe provided you know the schema