Where is the root directory?

The CMS Questions
1

I have a favicon.ico file to be put in the root directory. Can I just double check:

Is the root directory the same folder as the following folders:

assets
content
kirby
media
site

2

The root directory is usually the www or public-html or whatever folder it is called at your hosting. More generally speaking, the folder your domain points to, for example, if you have several folders in your webroot (website1, website2 etc.) and your domain website1.com points to the website1 folder, then this is the root of this website.

Same as when you have a static website, nothing to do with Kirby in particular.