FDA D1 SET 1

What is Big Data?

• Data that is easy to analyze
• Data that is too large to be processed by traditional database systems
• Data that is stored in Excel sheets
• Data that is encrypted
• Pluto

Which of the following is a benefit of using a NoSQL database like MongoDB?

• Schema flexibility
• ACID transactions
• Structured data
• Static schema

What is the main advantage of using MapReduce for processing Big Data?

• Real-time data processing
• Simplicity in programming
• Scalability and fault-tolerance
• Support for ACID transactions

What does Market Basket Analysis aim to discover?

• Customer demographics
• Product associations and purchasing patterns
• Customer lifetime value
• Customer churn rate

Velocity is the speed at which the data is processed _____.

• True
• False
• Can Not Say
• None of the above

__________ maps input key/value pairs to a set of intermediate key/value pairs.

• a) Mapper
• b) Reducer
• c) Both Mapper and Reducer
• d) None of the mentioned

What does the CAP theorem state?

• Data should be Consistent, Available, and Partition-tolerant
• Data can be either Consistent, Available, or Partition-tolerant, but not all three
• Data should be Consistent, Available, and Persisted
• Data should be Consistent, Accessible, and Persistent

In the context of MapReduce, what is shuffling?

• The process of copying the output of the Map tasks to the Reducer
• The process of dividing the input data into smaller chunks
• The process of sorting the input data
• The process of reducing the data size

Which Hadoop component is responsible for the actual processing of the data?

• YARN
• HDFS
• MapReduce
• Hive

A record in MongoDB is a ___.

• A. Document
• B. Table
• C. Application
• D. None of the mentioned above