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

YARN (Yet Another Resource Negotiator) manages cluster resources and schedules jobs in Hadoop.

Question 2

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

Accepted Answer

Amazon Redshift

Answer

Amazon Redshift is AWS's columnar, petabyte-scale managed data warehouse.

Question 3

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

Accepted Answer

Variety

Answer

The classic three Vs are volume, velocity, and variety.

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

Spark's RDD abstraction keeps data in memory, enabling fast iterative processing.

Question 5

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

Accepted Answer

BigQuery

Answer

BigQuery is Google Cloud's serverless, highly scalable data warehouse for SQL analytics.

Data Analytics Certifications (DAC) Practice Test