Cloud Computing and Data Analytics Quiz

Your name & Roll no

Which deployment model is most suitable for a government agency that needs both strict control over sensitive data and shared services with other government departments, and what is a key disadvantage of this model?

• Public Cloud; less control over security

• Private Cloud; requires internal IT expertise

• Hybrid Cloud; complex to manage

• Community Cloud; shared governance issues

Which of the following best illustrates the concept of elasticity in cloud computing?

• The ability to rent virtual machines based on long-term project needs;

• Scaling computing resources automatically in response to real-time demand;

• Ensuring secure multi-user environments through data isolation;

• Hosting applications with pre-configured environments for development;

Which of the following best describes the role of descriptive analytics in business decision-making?

• It predicts future trends using machine learning models.

• It provides recommendations based on future outcomes.

• It summarizes past data to understand what has happened.

• It groups customers based on their shared behavior.

Which of the following is a key tool used in prescriptive analytics to make data-driven decisions?

• Mean, Median, Mode

• Linear Programming

• Correlation Analysis

• Regression

Which of the following best defines the term "Cardinality" in an ER diagram?

• The number of attributes in an entity

• The uniqueness of a primary key

• The number of relationships an attribute can have

• The number of instances in one entity that can be associated with instances in another

What is the main difference between the ER model and the relational data model?

• ER model uses tables, while relational model uses diagrams

• ER model focuses on implementation, while relational model focuses on business needs

• ER model is used for conceptual design, while relational model is used for implementation in databases

• ER model stores data in rows and columns, relational model uses objects

Which data integration method allows access to data across multiple sources without physically moving it?

• ETL (Extract, Transform, Load)

• Middleware Integration

• Data Virtualization

• Data Propagation

Which of the following is a key disadvantage of the Top-Down approach in data warehouse architecture?

• Faster report generation

• Lower cost and quicker development

• High initial cost and time-consuming implementation

• High risk of inconsistent data views

Which of the following correctly represents the relationship between data, information, and knowledge?

• Data is actionable, information is raw, knowledge is processed

• Data is processed into information, which is then used to generate knowledge

• Knowledge is unstructured, data is structured, and information is irrelevant

• Information is a collection of facts, while knowledge cannot be used for decisions