Bootstrap MCQs – Introduction to Bootstrap

Bootstrap is the most popular front-end framework used for developing responsive and mobile-first websites. Since its initial release, Bootstrap has continuously evolved, introducing new features, improving performance, and adapting to modern web development trends. Understanding its history, founders, release versions, and key differences from previous versions is essential for developers preparing for interviews.

Here, we have compiled top multiple-choice questions (MCQs) that focus on the history of Bootstrap, its founders, release dates, version comparisons, and major improvements in Bootstrap 5. These questions will help you gain confidence in answering Bootstrap-related queries in technical interviews.

1.) Bootstrap was originally developed by employees of which company?

A) Facebook
B) Twitter
C) Google
D) Microsoft

Answer: Option B

Explanation: Bootstrap was created by Twitter developers Mark Otto and Jacob Thornton as an internal tool before being open-sourced.

2.) When was the first version of Bootstrap released?

A) 2009
B) 2010
C) 2011
D) 2012

Answer: Option C

Explanation: Bootstrap was released as an open-source project by Twitter on August 19, 2011.

3.) What was Bootstrap originally called before its public release?

A) Twitter UI
B) Blueprint
C) Bootstrap.js
D) Twitter Blueprint

Answer: Option D

Explanation: Before being named Bootstrap, the framework was called Twitter Blueprint.

4.) Which programming languages are primarily used in Bootstrap?

A) JavaScript & PHP
B) HTML, CSS & JavaScript
C) Python & HTML
D) Java & CSS

Answer: Option B

Explanation: Bootstrap is primarily built with HTML, CSS, and JavaScript to create responsive web pages.

5.) What is the main purpose of Bootstrap?

A) Front-end framework for responsive design
B) Back-end development
C) Database management
D) Cybersecurity testing

Answer: Option A

Explanation: Bootstrap is a CSS framework that helps developers create responsive and mobile-first websites.

6.) Which version of Bootstrap was the first to adopt a mobile-first approach?

A) Bootstrap 1
B) Bootstrap 2
C) Bootstrap 3
D) Bootstrap 4

Answer: Option C

Explanation: Bootstrap 3 (2013) was the first fully mobile-first version.

7.) Which Bootstrap version introduced Flexbox as the default layout model?

A) Bootstrap 2
B) Bootstrap 3
C) Bootstrap 4
D) Bootstrap 5

Answer: Option C

Explanation: Bootstrap 4 replaced the float-based grid with Flexbox for better layout control.

8.) When was Bootstrap 5 officially released?

A) 2019
B) 2020
C) 2021
D) 2022

Answer: Option C

Explanation: Bootstrap 5 was officially released on May 5, 2021.

9.) Which version of Bootstrap introduced the “reboot” module to normalize styles?

A) Bootstrap 3
B) Bootstrap 4
C) Bootstrap 5
D) Bootstrap 2

Answer: Option B

Explanation: The Reboot module replaced Normalize.css in Bootstrap 4.

10.) Which company currently maintains Bootstrap?

A) Twittery
B) Google
C) Meta
D) Open Source Community

Answer: Option D

Explanation: Bootstrap is now an open-source project maintained by the GitHub community.

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