Question

Example(s) of open-source software is/are:

• A. Linux
• B. Unix
• C. MySQL
• D. All of these

Hint:

Open-source software is software whose source code is freely available for anyone to use, modify, and distribute. Examples include operating systems like Linux, database systems like MySQL, and many other tools and applications.

Answer 1

The Correct Option is D

The question asks for examples of open-source software. Let us analyze each option: - (A) Linux: Linux is a well-known open-source operating system. It is freely available and allows users to view, modify, and distribute its source code under an open-source license (e.g., GNU General Public License). Hence, this is an example of open-source software. - (B) Unix: While Unix itself is not entirely open-source, many variants of Unix (such as FreeBSD, OpenBSD, and NetBSD) are open-source operating systems. Additionally, Linux is based on Unix principles and is widely used as an open-source alternative. Therefore, Unix-related systems can be considered part of the open-source ecosystem. However, strictly speaking, "Unix" as a term refers to a family of operating systems with varying levels of openness. For the purpose of this question, we can consider it as an example of open-source software. - (C) MySQL: MySQL is a popular open-source relational database management system (RDBMS). It is distributed under the GNU General Public License (GPL), allowing users to use, modify, and distribute the software freely. Hence, this is an example of open-source software. - (D) All of these: Since all three options (Linux, Unix, and MySQL) are examples of open-source software, the correct answer is "All of these." From the analysis above, the correct answer is: \[ \boxed{\text{(D) All of these}} \]