Which are the allowed operational modes in hadoop? (select all that apply)
java mapreduce mode
streaming mode
pipe mode
bash mode

Answer these and get 40 points and brainliest

Why is body language an important factor in a business meeting

Two students are discussing electricity that has a frequency of 60 hz. student a says that this type of electricity is referred to as ac. student b says that in this type of electricity, the electrons flow in only one direction. which of the following statements is correct? a. only student a is correct b. only student b is correct c. both of the two students are correct d. neither of the two students is correct