Joining Computer on Domain

I have a laptop that i use for work that is joined to our domain at work. However, i noticed that i can still logon using the same username/password/domain even when i take the laptop home. I thought that the laptop would have to contact the domain controller before being allowed to login?
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Cobra25Asked:
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Lee W, MVPTechnology and Business Process AdvisorCommented:
Computers cache the last 10 logons, storing the password for the appropriate domain accounts.  Only users that previously logged in who are members of the domain, up to 10 different users, will be cached.

This CAN be disabled, but usually isn't.
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DMTechGrooupCommented:
It caches the login credentials.  It is by design.

http://support.microsoft.com/kb/913485
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bballantyneCommented:
The two responses above are correct. Just one addition --> even though it allows you to log on to the computer using the domain account, it does not automatically mean that you'll be able to access domain resources e.g. the file server.
It's just a convenience feature to ensure people can use their computers even when the domain controller is unavailable,
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Cobra25Author Commented:
Okay, makes sense. So any user who authenticated once can take their machines home and login right?
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DMTechGrooupCommented:
Yes.
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Cobra25Author Commented:
Got the answers i was looking for.
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