Data Sources and Types

Description: This quiz covers the concepts of data sources and types commonly encountered in the field of data analytics.
Number of Questions: 15
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Tags: data sources data types big data analytics
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Which of the following is NOT a common data source for data analytics?

  1. Social Media Platforms

  2. Relational Databases

  3. Spreadsheets

  4. Satellite Imagery


Correct Option: D
Explanation:

Satellite Imagery is typically used for geospatial analysis, not general data analytics.

What is the term used to describe data that is generated in real-time?

  1. Streaming Data

  2. Batch Data

  3. Structured Data

  4. Unstructured Data


Correct Option: A
Explanation:

Streaming Data refers to data that is continuously generated and transmitted in real-time.

Which of the following is an example of a structured data type?

  1. JSON

  2. XML

  3. CSV

  4. Images


Correct Option: C
Explanation:

CSV (Comma-Separated Values) is a structured data format where data is organized into rows and columns, separated by commas.

What is the term used to describe data that does not have a predefined structure or format?

  1. Structured Data

  2. Semi-Structured Data

  3. Unstructured Data

  4. Relational Data


Correct Option: C
Explanation:

Unstructured Data refers to data that does not conform to a specific structure or format, such as text, images, or videos.

Which of the following is an example of a semi-structured data type?

  1. JSON

  2. XML

  3. CSV

  4. Images


Correct Option: A
Explanation:

JSON (JavaScript Object Notation) is a semi-structured data format that uses key-value pairs to represent data.

What is the term used to describe data that is stored in a relational database management system?

  1. Structured Data

  2. Semi-Structured Data

  3. Unstructured Data

  4. Relational Data


Correct Option: D
Explanation:

Relational Data refers to data that is stored in tables, with rows and columns, and related to each other through primary and foreign keys.

Which of the following is an example of a NoSQL database?

  1. MySQL

  2. PostgreSQL

  3. MongoDB

  4. Oracle


Correct Option: C
Explanation:

MongoDB is a NoSQL database that uses a document-oriented data model, where data is stored in JSON-like documents.

What is the term used to describe the process of extracting, transforming, and loading data from various sources into a central repository?

  1. Data Integration

  2. Data Warehousing

  3. Data Mining

  4. Machine Learning


Correct Option: A
Explanation:

Data Integration refers to the process of combining data from multiple sources into a single, unified view.

Which of the following is an example of a data lake?

  1. Hadoop Distributed File System (HDFS)

  2. Amazon S3

  3. Microsoft Azure Data Lake Store

  4. Google Cloud Storage


Correct Option: A
Explanation:

Hadoop Distributed File System (HDFS) is a distributed file system that is commonly used as a data lake for storing large volumes of data.

What is the term used to describe the process of analyzing data to extract meaningful insights and patterns?

  1. Data Exploration

  2. Data Visualization

  3. Data Mining

  4. Machine Learning


Correct Option: C
Explanation:

Data Mining refers to the process of extracting hidden patterns and insights from large amounts of data.

Which of the following is an example of a data visualization tool?

  1. Tableau

  2. Power BI

  3. Google Data Studio

  4. RStudio


Correct Option: A
Explanation:

Tableau is a popular data visualization tool that allows users to create interactive dashboards and visualizations.

What is the term used to describe the process of using statistical and mathematical techniques to uncover patterns and relationships in data?

  1. Data Exploration

  2. Data Visualization

  3. Data Mining

  4. Machine Learning


Correct Option: D
Explanation:

Machine Learning refers to the process of using algorithms to learn from data and make predictions or decisions.

Which of the following is an example of a supervised machine learning algorithm?

  1. Linear Regression

  2. K-Nearest Neighbors

  3. Decision Trees

  4. Clustering


Correct Option: A
Explanation:

Linear Regression is a supervised machine learning algorithm that is used to predict a continuous target variable based on one or more input variables.

What is the term used to describe the process of evaluating the performance of a machine learning model?

  1. Model Training

  2. Model Evaluation

  3. Model Deployment

  4. Model Tuning


Correct Option: B
Explanation:

Model Evaluation refers to the process of assessing the performance of a machine learning model using metrics such as accuracy, precision, and recall.

Which of the following is an example of a reinforcement learning algorithm?

  1. Q-Learning

  2. SARSA

  3. Deep Q-Network (DQN)

  4. Support Vector Machines (SVM)


Correct Option: A
Explanation:

Q-Learning is a reinforcement learning algorithm that is used to learn optimal behavior in an environment by interacting with it and receiving rewards or punishments.

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