Please refer to the slides and relative videos to finish this assignment 1. (20 pts) What is virtualization? What are the benefits we can have with it? 2. (20 pts) Based on virtualization technologies, how many types can we classify them? Please give a brief statement on each of them. 3. (20 pts) Core Hadoop has two main systems, what are they? 4. (20 pts) How does MapReduce work? Please give a brief explanation, figures and diagrams could be used if necessary. 5. (20 pts) How many main component in HDFS and what are the responsibilities of each component