Data Processing and MapReduce Quiz

Which Python library is primarily used to handle CSV files in data processing?

• pandas

• numpy

• matplotlib

• seaborn

Which method is used to read a CSV file into a pandas DataFrame?

• pd.read_csv()

• pd.load_csv()

• pd.import_csv()

• pd.open_csv()

In Python, which function is used to process JSON data?

• json.read()

• json.dump()

• json.load()

• json.parse()

Which command is used to process XLS (Excel) data using Python?

• pd.read_excel()

• pd.load_xls()

• pd.read_xls()

• pd.load_excel()

In a Python MongoDB implementation, which function is used to connect to the database?

• MongoConnect()

• MongoClient()

• DatabaseConnect()

• MongoDBConnect()

Which Python method is used to insert documents into a MongoDB collection?

• insert_documents()

• add_documents()

• insert_one()

• add_one()

Which programming language is commonly used for writing MapReduce programs?

• C++

• Java

• Python

• SQL

In the Hadoop MapReduce model, the 'map' function is responsible for:

• Sorting the data

• Filtering the data

• Applying a key-value pair transformation

• Summarizing data

Which Hadoop command is used to upload files from the local file system to HDFS?

• hadoop fs -put

• hadoop fs -copy

• hadoop fs -move

• hadoop fs -upload

What does the 'reduce' function in MapReduce do?

• Splits the data

• Merges and processes results from the map function

• Filters out unwanted data

• Normalizes the data