Question 17: What option(s) best describe the differences between Map…

Select all that apply.

1. A

   MapReduce leverages disk heavily, while Spark optimizes for memory-basedcomputations

2. B

   MapReduce forces barrier synchronization after every step, while Spark usesdirected acyclic graphs to execute as many steps as possible in parallel

3. C

   MapReduce is comprised of both Map and Reduce steps alternatingnecessarily, while Spark allows for any combination of actions and transformations.

4. D

   MapReduce enables massively parallel computation, while Spark's driverprogram sequentially executes on each worker

5. E

   MapReduce is restricted in flexibility since only Map and Reduce are possiblesteps, while Spark has a variety of Actions possible making it highly flexible