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EMC Dell Data Scientist and Data Engineering Optimize 2023 Sample Questions:

1. What is the primary storage system used by the Hadoop ecosystem?

A) Cassandra
B) Amazon S3
C) MongoDB
D) HDFS

2. In a relational database, what is a minimal set of attributes to uniquely identify a record in a table?

A) Primary key
B) Foreign key
C) Candidate key
D) Super key

3. Which component of the Apache Atlas framework allows metadata to be added to the Atlas environment?

A) Graph Engine
B) Apps
C) Ingest/Export
D) Metadata Sources

4. What is characteristic of HBase?

A) High-level language platform for analyzing and querying large data sets stored in HDFS
B) Tool that combines SQL, streaming, and complex analytics
C) Data warehouse infrastructure that can compile SQL queries and run the jobs in cluster
D) Tool that performs real-time write operations on large datasets using Key/Value pairs

5. An organization has implemented an IoT solution in their environment to gain competitive advantage.
This solution generates huge volumes of streaming data from different sources.
The organization wants to leverage this data to provide predictive, actionable results. They need a real- time data processing tool that can process the data using a fault-tolerant, horizontally scalable method.
Which tool should the organization use?

A) Apache Ranger
B) Apache Ambari
C) Apache Oozie
D) Apache Storm

Solutions: