account lockout mechanism

Hi all,

I want to know the lockout mechanism of wrong password attempt. For example, the Group Policy in our organization, the domain user account will be locked out if 3 times wrong password attempt. I want to know how Windows knows it has been 3 times.

• The domain user account will be locked out if 3 times wrong password attempt within how many minutes?
• If a domain user tries wrong password for 2 times on Computer A and then tries the wrong password again on Computer B immediately, will this user account be locked out? (A and B are in the same domain)

Thanks,
高麻雀