FREE Data Science Big Data Technologies Questions and Answers

Question 1

Which of the following Apache projects is primarily designed for distributed storage and processing of very large datasets across clusters of commodity servers, forming the foundation of many Big Data ecosystems?

Accepted Answer

Apache Hadoop

Answer

Apache Flink

Answer

Apache Kafka

Answer

Apache Spark

Question 2

A data engineering team needs to process real-time streams of sensor data from IoT devices for immediate anomaly detection. Which Big Data technology is best suited for high-throughput, fault-tolerant ingestion and real-time processing of continuous data streams?

Accepted Answer

Apache Kafka

Answer

Apache Hive

Answer

Apache Pig

Answer

Apache Cassandra

Question 3

Which characteristic of Big Data refers to the increasing speed at which data is generated, collected, and processed, often requiring real-time or near real-time analysis?

Accepted Answer

Velocity

Answer

Variety

Answer

Volume

Answer

Veracity

Question 4

A company is dealing with a petabyte-scale dataset of customer interactions and wants to perform complex analytical queries using SQL-like syntax without needing to write intricate MapReduce jobs. Which Hadoop-ecosystem project would best facilitate this requirement?

Accepted Answer

Apache Hive

Answer

Apache Zookeeper

Answer

Apache Oozie

Answer

Apache Sqoop

Question 5

Which of the following is a key advantage of using Apache Spark over traditional Hadoop MapReduce for iterative algorithms and interactive data analysis?

Accepted Answer

Spark's ability to perform in-memory processing, significantly reducing I/O operations.

Answer

Spark's reliance on disk-based processing for intermediate results.

Answer

Spark's built-in support for only batch processing.

Answer

Spark's lack of APIs for multiple programming languages.

Question 6

A NoSQL database that stores data in a column-family model and is highly scalable, fault-tolerant, and designed for high-availability reads and writes, often used for applications requiring massive throughput, is known as:

Accepted Answer

Cassandra

Answer

MongoDB

Answer

Redis

Answer

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