MS-DS Master of Data science FREE MS-DS Master of Data science Big Data Technologies Questions and Answers 3

Question 1

What is the primary purpose of Apache ZooKeeper in a big data ecosystem?

Accepted Answer

Distributed coordination and configuration management

Answer

Apache ZooKeeper provides centralized services for maintaining configuration information, naming, distributed synchronization, and group services across distributed applications.

Question 2

In Apache Kafka, what is a partition's role in achieving scalability for data streaming?

Accepted Answer

It allows a topic's data to be distributed across multiple brokers for parallel consumption

Answer

Kafka partitions divide a topic's data across multiple brokers, enabling parallel reads and writes that scale horizontally with the number of consumers.

Question 3

Which data processing paradigm does Apache Flink natively support that distinguishes it from batch-first frameworks?

Accepted Answer

True event-time stream processing with exactly-once semantics

Answer

Apache Flink is built as a stream-first processing engine that natively handles event-time semantics and provides exactly-once state consistency guarantees.

Question 4

What is the function of the YARN ResourceManager in a Hadoop cluster?

Accepted Answer

It allocates cluster resources to competing applications

Answer

The YARN ResourceManager is the master daemon that arbitrates resources among all applications running in the cluster by managing NodeManagers and scheduling containers.

Question 5

Which technique does Apache Spark use to recover lost data partitions without requiring full data replication?

Accepted Answer

Lineage-based recomputation from the DAG of transformations

Answer

Spark tracks the lineage of transformations used to build each RDD, allowing it to recompute only the lost partitions from the original data source rather than storing redundant copies.

MS-DS Master of Data science Practice Test

MS-DS Master of Data science Practice Test

MS-DS Master of Data science FREE MS-DS Master of Data science Big Data Technologies Questions and Answers 3