BigData 1

What is the first step in the data flow of a company ?

• Collecting data

• Integrating Data

• Cleaning Data

• Data Governance

Answer explanation

The first step in the data flow of a company is collecting data. This foundational action gathers the necessary information that will later be integrated, cleaned, and governed for effective use.

What are the different type of data processes that exist ?

• Batch processing

• Sequential Processing

• Streaming Processing

• Streamline processing

Answer explanation

Batch processing handles large volumes of data at once, while streaming processing deals with data in real-time. Sequential processing and streamline processing are not standard types of data processes.

What is the definition of a data Warehouse ?

• A datawarehouse is a central repository of data that is built on a database and contains only structured data

• A datawarehouse is a central repository of data containing structure and unstructured data.

• A datawarehouse is a collection of data that is organised in a table format (SQL)

• I have no idea

Answer explanation

The correct choice defines a data warehouse as a central repository built on a database that contains only structured data, which aligns with the standard definition of a data warehouse.

What are the functions of data management ?

• Define the taxonomy

• Define the governance rules

• Ensure validation of all the metrics

• Ensure GDPR and security rules

• Ensure coordination with Business Users

Answer explanation

Data management functions include defining taxonomy, governance rules, validating metrics, ensuring GDPR compliance, and coordinating with business users, all essential for effective data handling and security.

What are the different type of organisation of a data team

• Central Data Team

• Federated Data Team

• Hybrid Data Team

• Hierarchical Data Team

Answer explanation

The correct types of data team organization include Central Data Team, which consolidates resources; Federated Data Team, which distributes responsibilities; and Hybrid Data Team, which combines both approaches for flexibility.

What is the biggest problem of data teams ?

• Hiring ?

• Prioritization ?

• Technical complexity ?

• Leadership ?

Answer explanation

Hiring is often the biggest challenge for data teams due to the high demand for skilled professionals and the competitive market. Finding the right talent is crucial for effective data operations.

What are the different type of agile project management methods ?

• Scrum

• Kanban

• Waterfall

• Six Sigma

Answer explanation

Scrum and Kanban are both agile project management methods that focus on iterative progress and flexibility. Waterfall and Six Sigma are not agile methods; Waterfall is a linear approach, while Six Sigma focuses on quality improvement.

Is web scrapping allowed?

• Yes

• No

• It depends

• No one knows

Answer explanation

Web scraping legality varies by website and jurisdiction. Some sites allow it through their terms of service, while others prohibit it. Therefore, the answer is 'It depends' on specific circumstances.

What are the 3 V of Big Data ?

• Volume, Velocity, Variety

• Velocity, Veracity, Volatility

• Veracity, Value, Variability

• Volatility, Validity, Visualisation

Answer explanation

The 3 V's of Big Data are Volume, Velocity, and Variety. Volume refers to the amount of data, Velocity to the speed of data processing, and Variety to the different types of data. This makes the first option the correct answer.

What is this type of data ?

• Structured Data ?

• Semi-Structured Data ?

• UnStructured Data

Answer explanation

Semi-structured data contains tags or markers to separate data elements but does not have a rigid structure like structured data. Examples include JSON and XML, which allow for flexibility in data representation.