DAC Big Data & Cloud Analytics 2

Question 1

In the Hadoop ecosystem, which component is primarily responsible for resource management and job scheduling?

Accepted Answer

YARN

Answer

HDFS

Answer

Hive

Answer

Pig

Question 2

Which AWS service is a fully managed data warehouse optimized for analytics on petabyte-scale datasets?

Accepted Answer

Amazon Redshift

Answer

Amazon S3

Answer

Amazon EC2

Answer

Amazon Route 53

Question 3

The 'three Vs' of big data traditionally refer to volume, velocity, and which third characteristic?

Accepted Answer

Variety

Answer

Validity

Answer

Value

Answer

Volatility

Question 4

Which processing model does Apache Spark use to keep intermediate data in memory for faster iterative computation?

Accepted Answer

Resilient Distributed Datasets (RDDs)

Answer

MapReduce shuffles to disk

Answer

Single-threaded batch

Answer

Row-by-row cursors

Question 5

In Google Cloud, which serverless service is designed for running SQL analytics over massive datasets?

Accepted Answer

BigQuery

Answer

Compute Engine

Answer

Cloud Storage

Answer

Pub/Sub

Question 6

What is the primary purpose of a data lake compared to a traditional data warehouse?

Accepted Answer

Store raw data in native formats at scale

Answer

Only store cleaned, structured tables

Answer

Serve real-time OLTP transactions

Answer

Replace all backup systems

Question 7

Which term describes automatically adjusting cloud compute resources up or down based on workload demand?

Accepted Answer

Elastic scaling

Answer

Data partitioning

Answer

Normalization

Answer

Sharding