A. File structure: fat32 supports; Administrator, guest and Anonymous… for windows (after Vista) you need at least NTFS,
B. Accounts:
1. Anonymous = any one and in todays world is only used on the internet… even then, its considered dangerous and being fazed out.
2. Everyone = all accounts currently stored on the server have the same rights and restrictions which are specified as needed… typically only used as a tool to unlock stubborn files.
3. Trusted installer (windows 8 and above) = Microsoft… yes you can take control away from them but Microsoft only "trusts" themselves now-days so things like windows updates can be buggered by removing this setting.
4. Owner = the account which created the file or...