DA

Question 1

What is the primary role of a data architect?

Answer 1

To design and manage the data infrastructure within an organization.

Question 2

True or False: Data architects are responsible for data modeling.

Answer 2

True

Question 3

What is a data model?

Answer 3

A conceptual representation of data structures and their relationships.

Question 4

Fill in the blank: A data architect should be proficient in _____ languages.

Answer 4

query

Question 5

What is the difference between a data warehouse and a data lake?

Answer 5

A data warehouse is structured and optimized for analysis, while a data lake is a storage repository that holds raw data in its native format.

Question 6

Which SQL command is used to retrieve data from a database?

Answer 6

SELECT

Question 7

What is ETL in the context of data architecture?

Answer 7

Extract, Transform, Load - a process for moving data from source systems to a data warehouse.

Question 8

True or False: Data architects only work with relational databases.

Answer 8

False

Question 9

What is a NoSQL database?

Answer 9

A database designed to store and retrieve data in a format other than the tabular relations used in relational databases.

Question 10

What does the term ‘data governance’ refer to?

Answer 10

The overall management of data availability, usability, integrity, and security.

Question 11

Multiple Choice: Which of the following is NOT a type of data model? A) Conceptual B) Logical C) Physical D) Temporal

Answer 11

D) Temporal

Question 12

What is the purpose of data normalization?

Answer 12

To minimize redundancy and dependency by organizing fields and tables in a database.

Question 13

Fill in the blank: _____ is the practice of analyzing data to extract insights.

Answer 13

Data analytics

Question 14

What is a star schema in data warehousing?

Answer 14

A type of database schema that organizes data into fact and dimension tables.

Question 15

True or False: Data architects need to understand cloud computing technologies.

Answer 15

True

Question 16

What is a data pipeline?

Answer 16

A set of processes that move data from one system to another, often involving transformation and storage.

Question 17

What are primary keys used for in a database?

Answer 17

To uniquely identify each record in a table.

Question 18

Multiple Choice: Which of the following is a common data visualization tool? A) Tableau B) MySQL C) Python D) Java

Answer 18

A) Tableau

Question 19

What does ‘big data’ refer to?

Answer 19

Data sets that are so large or complex that traditional data processing applications are inadequate.

Question 20

True or False: Data architects do not need to collaborate with other IT professionals.

Answer 20

False

Question 21

What is the purpose of indexing in databases?

Answer 21

To improve the speed of data retrieval operations.

Question 22

Fill in the blank: _____ databases are designed for high availability and scalability.

Answer 22

Distributed

Question 23

What is the significance of data lineage?

Answer 23

It provides a detailed view of the data’s journey from origin to its current state, ensuring transparency and compliance.

Question 24

Multiple Choice: Which of the following is a characteristic of unstructured data? A) Easily searchable B) Fixed format C) Lacks a predefined structure D) Tabular format

Answer 24

C) Lacks a predefined structure

Question 25

What is the role of metadata in data architecture?

Answer 25

To provide information about other data, such as its source, format, and structure.

Question 26

True or False: Data architects are involved in data security measures.

Answer 26

True

Question 27

What is a relational database?

Answer 27

A database that stores data in tables with predefined relationships between them.

Question 28

Fill in the blank: _____ is a method of storing data that allows for flexible schema design.

Answer 28

Schema-less design

Question 29

What is a data mart?

Answer 29

A subset of a data warehouse focused on a specific business line or team.

Question 30

What is the purpose of a data dictionary?

Answer 30

To document the structure, relationships, and constraints of data elements in a database.

Question 31

Multiple Choice: Which of the following is a common type of data architecture? A) Layered B) Monolithic C) Microservices D) All of the above

Answer 31

D) All of the above

Question 32

What is the difference between structured and unstructured data?

Answer 32

Structured data is organized and easily searchable, while unstructured data lacks a predefined format.

Question 33

True or False: Data architects should be knowledgeable about data privacy regulations.

Answer 33

True

Question 34

What is cloud data architecture?

Answer 34

The design and management of data systems hosted in cloud environments.

Question 35

Fill in the blank: _____ is a framework for managing and analyzing big data.

Answer 35

Hadoop

Question 36

What is the purpose of data replication?

Answer 36

To create copies of data for backup, recovery, and improved access.

Question 37

Multiple Choice: Which of the following is NOT a benefit of data warehousing? A) Improved data quality B) Historical analysis C) Increased data redundancy D) Enhanced decision-making

Answer 37

C) Increased data redundancy

Question 38

What is a key-value store?

Answer 38

A type of NoSQL database that uses a simple key-value method for storing data.

Question 39

True or False: Data architects can only work in the technology sector.

Answer 39

False

Question 40

What is a data governance framework?

Answer 40

A set of policies and procedures for ensuring data quality, security, and compliance.

Question 41

Fill in the blank: _____ is the process of converting raw data into a meaningful format.

Answer 41

Data transformation

Question 42

What is the purpose of data archiving?

Answer 42

To store data that is no longer actively used but must be retained for future reference.

Question 43

Multiple Choice: Which of the following is a benefit of using a cloud data architecture? A) Scalability B) Increased costs C) Limited accessibility D) Complexity

Answer 43

A) Scalability

Question 44

What is an OLAP system?

Answer 44

Online Analytical Processing - a category of software technology that enables analysts to extract and view data from different perspectives.

Question 45

True or False: Data architects should have programming skills.

Answer 45

True

Question 46

What is a data flow diagram?

Answer 46

A visual representation of the flow of data within a system.

Question 47

Fill in the blank: _____ is a standardized language for managing relational databases.

Answer 47

SQL

Question 48

What is the role of a data steward?

Answer 48

To oversee data governance and ensure data quality within an organization.

Question 49

Multiple Choice: Which of the following technologies is commonly used for real-time data processing? A) Batch processing B) Stream processing C) Data warehousing D) Data lakes

Answer 49

B) Stream processing

Question 50

What is data lineage tracking?

Answer 50

The process of documenting the origins and transformations of data as it flows through systems.

Question 51

True or False: Data models are static and do not change over time.

Answer 51

False

Question 52

What is a data warehouse schema?

Answer 52

The organization of data in a data warehouse, which includes star, snowflake, and galaxy schemas.

Question 53

Fill in the blank: _____ analysis involves examining large volumes of data to uncover hidden patterns.

Answer 53

Data mining

Question 54

What is a data integration tool?

Answer 54

Software that allows combining data from different sources into a single, unified view.

Question 55

Multiple Choice: Which of the following is a common cloud service model for data storage? A) IaaS B) PaaS C) SaaS D) All of the above

Answer 55

D) All of the above

Question 56

What is the purpose of a data quality assessment?

Answer 56

To evaluate the accuracy, completeness, reliability, and relevance of data.

Question 57

True or False: Data architects typically do not work with data visualization tools.

Answer 57

False

Question 58

What is the function of a data broker?

Answer 58

To collect and sell data from various sources to other organizations.

Question 59

Fill in the blank: _____ is a method for ensuring data privacy and security.

Answer 59

Data encryption

Question 60

What is the difference between data mining and data analytics?

Answer 60

Data mining focuses on discovering patterns in large data sets, while data analytics involves interpreting data to inform decision-making.

Question 61

Multiple Choice: Which of the following is a challenge of big data? A) Volume B) Variety C) Velocity D) All of the above

Answer 61

D) All of the above

Question 62

What is a data breach?

Answer 62

An incident where unauthorized access to data occurs, potentially compromising its confidentiality, integrity, or availability.

Question 63

True or False: Data architects must understand machine learning concepts.

Answer 63

True

Question 64

What is a hybrid cloud?

Answer 64

A computing environment that combines public and private cloud services.

Question 65

Fill in the blank: _____ is a type of database that stores data in a document format.

Answer 65

Document-oriented database

Question 66

What is the significance of data ethics?

Answer 66

It ensures that data collection and usage practices respect privacy and promote fairness.

Question 67

Multiple Choice: Which of the following is a common data storage format? A) JSON B) CSV C) XML D) All of the above

Answer 67

D) All of the above

Question 68

What is the role of a database administrator?

Answer 68

To manage and maintain database management systems, ensuring their performance, security, and availability.

Question 69

True or False: Data architects are responsible for ensuring compliance with data regulations.

Answer 69

True

Question 70

What is a data visualization dashboard?

Answer 70

A user interface that displays data visualizations and metrics for easy interpretation and analysis.

Question 71

Fill in the blank: _____ refers to the process of cleaning and organizing data.

Answer 71

Data cleansing

Question 72

What is the function of a data warehouse?

Answer 72

To store and manage large volumes of structured data for analysis and reporting.

Question 73

Multiple Choice: Which of the following is a feature of cloud data storage? A) Accessibility B) Cost efficiency C) Scalability D) All of the above

Answer 73

D) All of the above

Question 74

What is a data catalog?

Answer 74

A repository that enables organizations to manage and discover their data assets.

Question 75

True or False: Data architects only work with historical data.

Answer 75

False

Question 76

What is a schema in database design?

Answer 76

A blueprint that outlines how data is organized in a database.

Question 77

Fill in the blank: _____ analysis is used to identify trends and patterns in time-series data.

Answer 77

Time-series