Which operating system is not case-sensitive and uses \ as a path separator?

The choice of Windows as the correct answer is based on its characteristics as an operating system. Windows is not case-sensitive, meaning that file names such as "File.txt" and "file.txt" would refer to the same file in the operating system. This feature allows users to interact with files without having to worry about the exact casing of letters.

Additionally, Windows uses the backslash ( \ ) as a path separator in its file paths. For example, a typical file path in Windows would look like "C:\Program Files\MyApplication", clearly illustrating this distinction.

In contrast, other operating systems, such as Linux, Ubuntu, and Red Hat (which is a distribution of Linux), are case-sensitive and use the forward slash ( / ) as a path separator. This means that on a case-sensitive system, "File.txt" and "file.txt" would be considered different files. Understanding these differences is crucial for users who work in multi-platform environments or are transitioning between operating systems.