CompTIA A+ 220-802

Answer: A - All of the above versions of Windows 7 allow users to join Domains, except for the Home Premium version.

Key Takeaway: Knowing the differences between the Windows 7 versions will serve you well on the exam. Ultimate and Enterprise editions are nearly identical in features, although Enterprise edition is only sold to companies directly by Microsoft. Professional contains everything that Ultimate edition has, except for BitLocker. Home Premium edition loses a lot of functionality, including backing up to the network, Windows XP mode, and joining Domains. Home Premium edition allows you to Create Home Groups, but Starter edition doesn’t even have that.