Data locality in MapReduce applies only to the mappers rather than the mappers and reducers.

HDFS is an efficient distributed filesystem for reading and writing large amount of data in parallel.

Consider the wordcount mapreduce application we covered in class. Let: The main class be WordCount The jar file be wordcount.jar The input be stored in a directory called wc-in under the user home directory in HDFS. The output diretcory be wc-out, to be created under the user home directory in HDFS. 1. What is the YARN command to submit and run the job in Hadoop? Answer: _______ 2. What is the HDFS command to show the whole output in the terminal? Answer: _______

In the Java code of the Driver of MapReduce applications, we invoke the method _______ on the job object to submit the job and wait for the job to finish. The name of the other method that can submit the job without blocking the Driver is _______

To use HDFS services we have to start the _______ and the _______ daemons on the master and worker machines respectively.

Compute C(10, 4). Enter a whole number.

A card is drawn at random from a standard deck. What is the probability it is a diamond or a face card (J, Q, K)?

Which formulas correctly apply Inclusion-Exclusion for two sets A and B? (Select all that apply.)

Compute P(6, 3), the number of ordered arrangements of 3 letters chosen from {A,B,C,D,E,F} without repetition. Enter a whole number.

Find the coefficient of a³b⁴ in the expansion of (a + b)⁷. Enter a whole number.