MS-DS Master of Data science FREE Master of Data science Big Data Questions and Answers 2

Question 1

Which distributed computing framework uses Resilient Distributed Datasets (RDDs) as its core data abstraction?

Accepted Answer

Apache Spark

Answer

Apache Hadoop

Answer

Apache Flink

Answer

Apache Storm

Question 2

In the context of big data, what does the term 'data lake' primarily refer to?

Accepted Answer

A centralized repository storing raw data in its native format

Answer

A relational database optimized for analytics

Answer

A cloud-based data warehouse with predefined schemas

Answer

A real-time streaming data pipeline

Question 3

What is the primary purpose of Apache Kafka in a big data architecture?

Accepted Answer

Distributed event streaming and message brokering

Answer

Batch processing of large datasets

Answer

In-memory caching of query results

Answer

Schema management for data warehouses

Question 4

Which consistency model does the CAP theorem state cannot be fully achieved simultaneously with availability and partition tolerance?

Accepted Answer

Strong consistency

Answer

Eventual consistency

Answer

Causal consistency

Answer

Read-your-writes consistency

Question 5

What distinguishes columnar storage formats like Parquet from row-based storage in big data analytics?

Accepted Answer

Columnar formats enable faster analytical queries by reading only relevant columns

Answer

Columnar formats store data in the order it was inserted for faster writes

Answer

Columnar formats require less metadata than row-based formats

Answer

Columnar formats cannot be compressed as efficiently as row-based formats

Question 6

In MapReduce, what operation occurs between the Map and Reduce phases?

Accepted Answer

Shuffle and sort

Answer

Partition and replicate

Answer

Compress and archive

Answer

Index and cache