Data Science Tools Cognitive Class Exam Answers:-

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Course Name:- Data Science Tools

Module 1. Language of Data Science

Question 1.Which of the following statements is true?

• 80% of data scientists worldwide use Python.
• Python is useful for AI, machine learning, web development, and IoT.
• Python is the most popular language in data science.
• Keras, Scikit-learn, Matplotlib, Pandas, and TensorFlow are all built with Python.
• All of the above

Question 2. Which of the following are SQL databases? (Select all that apply.)

• MongoDB
• MariaDB
• MySQL
• PostgreSQL
• CouchDB
• Oracle

Question 3. Which statements are true about Open Source and Free Software? (Select all that apply.)

• Free Software and Open Source can be used interchangeably.
• Free Software can always be run, studied, modified and redistributed with or without changes.
• Most of Free Software licenses also qualify for Open Source.
• Open Source Software can be modified without sharing the modified source code depending on the Open Source license.

Question 4. Is the following statement true or false: “R integrates well with other computer languages like C++, Java, C, .Net and Python.”

• True
• False

Question 5. Which of the following languages can be used for data science?

• SQL
• Java
• Julia
• R
• Scala
• Javascript
• All of the above

Question 6.Which of the following is used to make Artificial intelligence and Machine Learning possible? (Select all that apply.)

• Oracle
• PyTorch
• TensorFlow.js
• Apache Spark
• GNU
• Caffe

Module 2. Data Science Tools

Question 1.Which of the following are common tasks in data science?

• Data Management
• Model Deployment
• Data Integration and Transformation
• Data Visualization
• Model Monitoring and Assessment
• Model Building
• All of the above

Question 2. Which of the following are data management tools? (Select all that apply.)

• GitHub
• MySQL
• PostgreSQL
• KubeFlow
• PixieDust

Question 3. Which of the following are Data Integration and Transformation tools? (Select all that apply.)

• Cassandra
• Apache Kafka
• Apache Nifi
• Apache AirFlow
• Ceph

Question 4. Which statement about JupyterLab is correct?

• JuypterLab can run R and Python code in addition to other programming languages.
• JuypterLab can run R code only.
• JuypterLab can run R and Python code only.
• JuypterLab can run Python code only.

Question 5. Which statement about RStudio is correct?

• RStudio is the primary choice for web development.
• RStudio is the primary choice for development in the Python programming language.
• RStudio is the primary choice for development in the R programming language.

Question 6. Which statements about IBM Watson Studio and OpenScale are correct? (Select all that apply.)

• Watson Studio together with Watson OpenScale is a database management system.
• Watson Studio together with Watson OpenScale covers the complete development life cycle for all data science, machine learning and AI tasks.
• Watson Studio together with Watson OpenScale is available as a Cloud offering as well as a package running on top of Kubernetes/RedHat OpenShift in a local data center called IBM Cloud Pak for Data.

Module 3. Packages,APIs, Datasets and Models

Question 1. Which scientific computing library provides data structures and data analysis tools for Python?

• Seahorse
• YumPies
• Pandas
• TensorFlow

Question 2. What does the acronym API stand for?

• Abstract Programming Interface
• Abstract Python Interface
• Algorithmic Programming Interface
• Application Programming Interface

Question 3. True or False: Open data is always distributed under a Community Data License Agreement.

• True
• False

Question 4. Which of the following is not a type of Machine Learning?

• Reinforcement learning
• Supervised teaching
• Unsupervised learning
• Supervised learning

Question 5. Which of the following is NOT a deep learning framework?

• Keras
• PyTorch
• TensorFlow
• Tommy

Question 6. Fill in the blank: The MAX model-serving microservices expose a _________________ that applications use to consume a model.

• Python API
• Java API
• REST API
• Scala API

Module 4. GitHub

Question 1. Which of the following statements are true?

• Git is an integrated development environment for data science.
• Git is a system for version control of source code.
• Git is very useful for data science as well since data science often involves a lot of source code to be written and managed.

Question 2. Which of the following statements about repositories are correct? (Select all that apply.)

• The remote repository is only accessible by myself.
• The local repository is only accessible by myself.
• The staging is only accessible by myself.
• The remote repository is accessible by all contributors.
• The local repository is accessible by all contributors.

Question 3. What is the best process contributing a bugfix to a foreign repository?

• Fork the repository, update the fork and create a pull request.
• Send the fix via email to the author.
• Ask the repository owner for write access to the repository.

Module 5. Jupyter Notebooks and Jupyter Lab

Question 1. Which of the following functions do Jupyter Notebooks unify?

• Editing and display of documentation
• Visualization of charts
• Editing and execution of source code
• All of the above

Question 2. Which statement is true about Jupyter Notebooks?

• Jupyter Notebooks are a commercial product of IBM.
• Jupyter Notebooks are free and open source.

Question 3. What is a Jupyter Notebook kernel?

Module 6. RStudio IDE

• It is part of the operating system the Jupyter server runs on.
• It is a wrapper running on the Jupyter server encapsulating the programming language interpreter.

Question 1.Which of the following functions does RStudio unify? (Select all that apply.)

• Storing of data.
• Editing and execution of source code.
• Display of the R Console.
• Visualization of plots.
• Visualization of data in table form.

Question 2. Which statement is true about the R Studio IDE?

• RStudio is a commercial product of IBM.
• RStudio is free and open source.

Question 3.Which statement about R packages is correct?

• R doesn’t require any packages to be installed since it contains all functionality necessary which a data scientists ever requires.
• R currently supports more than 15,000 packages which can be installed to extend R’s functionality.

Module 7. Watson Studio

Question 1. Fill in the blank: In Watson Studio, a ____________ is how you organize your resources to achieve a particular goal. Resources can include data, collaborators, and analytic assets like notebooks and models.

• Asset
• Job
• Notebook
• Project

Question 2. Fill in the blank: It’s a best practice to remove or replace _____________ before publishing to GitHub.

• Charts
• Code cells
• Markdown text
• Credentials

Question 3. Which of the following do you need to create in order to publish a notebook to your GitHub repository?

• Profile
• Access token
• Apps
• Login credential

Question 4. Fill in the blank: If you’d like to schedule a notebook in Watson Studio to run at a different time you can create a(n) _____________.

• Job
• API
• Markdown cell
• Asset

Question 5. Fill in the blank: On the environments tab you can define the _________________.

• Runtime configuration for notebook editor
• Runtime configuration for flow editor
• Hardware size
• Software configuration
• All of the above

Question 6. Fill in the blank: When sharing a read only version of a notebook, you can choose to share __________________.

• Only text and output
• All content including code
• A permalink
• All content, excluding sensitive code cells
• All of the above

Question 7. Fill in the blank: When working in a Jupyter Notebook, before returning to a project, it’s important to ________________________.

• Run cells
• Save your notebook
• Insert cells
• Insert to code

Question 8. Fill in the blank: Before running a notebook, it’s a best practice to ____________ to describe what the notebook does.

• Insert a cell at the top of the notebook
• Insert a cell at the bottom of the notebook
• Delete notebook cells
• Refresh your page

Question 9. Fill in the blank: In the _____________ tab you can define the hardware size and software configuration for the runtime associated with Watson Studio tools such as notebooks.

• Overview
• Assets
• Environments
• Settings

Question 10.Fill in the blank: IBM Cloud uses ______________ as a way for you to organize your account resources in customizable groupings so that you can quickly assign users access to more than one resource at a time.

• Resource groups
• Services
• Catalogs
• Projects

Data Science Tools Cognitive Class Final Exam Answers:-

Question 1. Which are the three most used languages for data science? (Select all that apply.)

• Java
• R
• Scala
• Python
• SQL

Question 2. Which of these is a database query language?

• SQL
• Python
• Julia
• All of the Above

Question 3.  Is it possible to use machine learning within a web browser with Javascript?

• No
• Yes

Question 4. Which of these is not a machine learning or deep learning library for Python?

• Scikit-learn
• PyTorch
• Keras
• NumPy

Question 5. Comma Separated Values (CSV) is a commonly used format to store:

• Tabular data
• Hierarchical or network data
• All of the above

Question 6. Classification models can be used to determine whether:

• an image contains a dog
• a video contains a specific sound
• an email is likely spam
• All of the above

Question 7.Generally speaking, which type of model is used to predict a numerical value, such as the potential sales price of a used car?

• Classification model
• Regression model
• Clustering model

Question 8. Fill in the blank: ________________ is the heart of every organization.

• The cloud
• Data
• Integration
• Open source

Question 9. What does the “BI” in BI Tools stand for?

• Build Information
• Business Intelligence
• Build Integration
• Business Integration

Question 10. Which of the following are true about Data Asset Management?

• To be done effectively data must be versioned and annotated with meta data.
• A crucial part of data science at the enterprise level.
• Also known as data governance.
• All of the above

Question 11. Which are the two most used open source tools for data science? (Select all that apply.)

• Notepad
• RStudio
• Jupyter Notebooks / JupyterLab
• Spyder
• VSCode

Question 12. What tool do most R developers use?

• Jupyter Notebooks / JupyterLab
• RStudio

Question 13. What tool do most Python developers use?

• Jupyter Notebooks / JupyterLab
• RStudio

Question 14. True or false? Jupyter Notebooks / JupyterLab support development in R.

• True
• False

Question 15. Which tool unifies documentation, source code and data visualizations into a single document?

• Notepad
• VSCode
• Jupyter Notebooks / JupyterLab

Question 16. Which command is used to install packages in R?

• install.package(“package name”)
• install(“package name”)
• package(“package name”)
• install.packages(“package name”)

Question 17. Which of the following functions does RStudio provide?

• Documenting R code applications.
• Storing data in tables.
• Creating relationships between data tables.
• Editing and execution of R code.

Question 18. True or False: The Jupyter Notebook kernel must be installed on a local server.

• True
• False

Question 19. Which of the following statements about Jupyter Notebooks is correct?

• Jupyter Notebooks are only available if installed locally on your computer.
• Jupyter Notebooks support the Visualization of data in charts.
• Jupyter Notebooks are a commercial product of IBM.
• Jupyter Notebooks provide storage of massive quantities of data in data lakes.

Question 20. True or false? R studio supports development in Python.

• True
• False

Question 21. Which feature in Watson Studio helps to keep track of and discover relevant Machine Learning assets?

• Watson Knowledge Catalog
• AutoAI
• Modeler Flows
• OpenScale
• All of the above

Question 22. Fill in the blank: If you’d like to schedule a notebook in Watson Studio to run at a different time you can create a(n) ________.

• API
• markdown cell
• job
• asset

Question 23. Fill in the blank: In the __________ tab you can define the hardware size and software configuration for the runtime associated with Watson Studio tools such as Notebook.

• settings
• assets
• environments
• overview

Question 24.  Fill in the blank: It’s a best practice to remove or replace _____________ before publishing to GitHub.

• credentials
• charts
• markdown text
• code cells