What character is used in Puppet to separate modules and classes in a path notation?

In Puppet, the correct character used to separate modules and classes in a path notation is the double colon (::). This notation is critical for defining the hierarchy and organization of classes within a module. For instance, if you have a class called webserver inside a module named apache, you would refer to that class as apache::webserver. This clear syntax helps Puppet understand the structure of your modules, making it easier to manage and maintain configurations.

In contrast, while other characters like the colon (:) and slash (/) are commonly used in various contexts within programming and configuration languages, they do not serve the same purpose in Puppet's class and module delineation. The hyphen (-) is generally not used for separating class names or module names either, as it can lead to syntax errors or ambiguous references.

Thus, the use of the double colon (::) is not only a matter of syntax but also establishes a clear and logical organization of Puppet code, enabling better readability and maintainability of the configurations.