Can you summarize the classification of Operating Systems based on the number of users and tasks, citing examples?

I've reviewed your notes on the classification of Operating Systems. I can see details about:

• Classification by Number of Users:
  • Single User OS: Designed for one person at a time, often called desktop operating systems (e.g., Windows XP, Vista, 7, Linux).
  • Multi User OS: Designed to support more than one user or computer, referred to as server operating systems (e.g., Windows Server 2000, 2003, 2005, 2008).
• Classification by Task:
  • Single Tasking OS: Designed to support only one application at a time (e.g., Microsoft DOS).
  • Multi Tasking OS: Designed to support many applications concurrently (e.g., Microsoft Windows).