Data Science Questions and Answers Part-3

1. Which of the following is not a CLI command?
a) delete
b) rm
c) clear
d) none of the mentioned

  Discussion

Answer: a
Explanation: rm can be used to remove files and directories.

2. Point out the wrong statement.
a) Command is the CLI command which does a specific task
b) There is one and only flag for every command in CLI
c) Flags are the options given to command for activating particular behaviour
d) All of the mentioned

  Discussion

Answer: b
Explanation: Depending on the command, there can be zero or more flags and arguments.

3. Which of the following systems record changes to a file over time?
a) Record Control
b) Version Control
c) Forecast Control
d) None of the mentioned

  Discussion

Answer: b
Explanation: Version control is also known as revision control.

4. Which of the following is a revision control system?
a) Git
b) NumPy
c) Slidify
d) None of the mentioned

  Discussion

Answer: a
Explanation: Git is a free and open source distributed version control system designed to handle everything from small to very large projects with speed and efficiency.

5. Which of the following command line environment is used for interacting with Git?
a) GitHub
b) Git Bash
c) Git Boot
d) all of the mentioned

  Discussion

Answer: b
Explanation: Git for Windows provides a BASH emulation used to run Git from the command line.

6. Which of the following web hosting service use Git control system?
a) GitHub
b) Open Hash
c) Git Bash
d) none of the mentioned

  Discussion

Answer: a
Explanation: GitHub is a Web-based Git repository hosting service, which offers all of the distributed revision control and source code management (SCM) functionality of Git.

7. cp command can be used to copy the content of directories.
a) True
b) False

  Discussion

Answer: a
Explanation: -r flag should be used for copying the content.

8. Point out the correct statement
a) Descriptive analysis is first kind of data analysis performed
b) Descriptions can be generalized without statistical modelling
c) Description and Interpretation are same in descriptive analysis
d) none of the mentioned

  Discussion

Answer: b
Explanation: Descriptive analysis describe a set of data.

9. Which of the following allows you to find the relationship you didn’t about?
a) Inferential
b) Exploratory
c) Causal
d) None of the mentioned

  Discussion

Answer: b
Explanation: In statistics, exploratory data analysis is an approach to analyzing data sets to summarize their main characteristics, often with visual methods.

10. Which of the following command help us to give message description?
a) git command -m
b) git command -d
c) git command -message
d) none of the mentioned

  Discussion

Answer: a
Explanation: This only updates your local repository.