DE Week 1 Quiz

Which V of big data refers to the sheer weight of data generated and collected?

• Velocity
• Variety
• Volume
• Veracity
• Value

Select two examples of high-velocity data sources

• Social media feeds
• Data warehouses
• Static files
• Sensor data
• Data lakes

In the context of big data, what does the term "variety" refer to?

• The size of the data
• The complexity of the data
• The speed at which the data is generated
• The veracity of the data
• The value derived from the data

True or False: Veracity in big data refers to the accuracy and reliability of the data

• True
• False

What is the main difference between ETL (Extract, Transform, Load) and ELT (Extract, Load, Transform) data integration approaches?

• The order in which data is processed
• The tools used for data integration
• The type of data that can be processed
• The speed of data processing
• There is no difference

Which approach, ETL or ELT, is better suited for handling unstructured or semi-structured data? Why?

• ELT, because it enables direct analysis on raw data
• ETL, because it allows for greater flexibility in data processing
• ETL, because it ensures faster data loading
• ELT, because it facilitates better data transformation
• Both approaches are equally suited

Name three benefits of using cloud computing for data storage and processing.

• Cost savings, scalability, and data security
• Faster data processing, high availability, and reduced maintenance
• Enhanced collaboration, improved data governance, and data integration
• Increased data privacy, advanced analytics capabilities, and disaster recovery
• Centralized data management, real-time data access, and data replication

What is the main characteristic of a monolithic system architecture?

• Distributed and scalable design
• Highly scalable and elastic structure
• Single and unified codebase
• Distributed architecture with loosely-coupled components
• Hybrid architecture combining monolithic and microservices

What does OLTP stand for in the context of databases?

• Online Transfer Protocol
• Offline Transaction Processing
• Online Transaction Processing
• Offline Transfer Protocol
• Other Logical Transaction Process

Which type of database is typically optimized for read-heavy analytical queries?

• Relational database
• NoSQL database
• Document database
• Graph database
• OLAP database