Your network consists of a single Active Directory forest that contains a root domain and two child domains.
All servers run Windows Server 2008 R2. A corporate policy has the following requirements:
. All local guest accounts must be renamed and disabled.
. All local administrator accounts must be renamed.
. You need to recommend a solution that meets the requirements of the corporate policy.
What should you recommend?
A. Implement a Group Policy object (GPO) for each domain.
B. Implement a Group Policy object (GPO) for the root domain.
C. Deploy Network Policy and Access Services (NPAS) on all domain controllers in each domain.
D. Deploy Active Directory Rights Management Services (AD RMS) on the root domain controllers.
Correct Answer: A
Explanation/Reference:
This security policy reference describes the best practices, location, values, and security considerations for this policy setting.
** The built-in Administrator account exists on all computers that run the Windows Server 2008 R2, Windows Server 2008, Windows Server 2003, Windows 2000 Server, or Windows XP Professional operating systems. If you rename this account, it is slightly more difficult for unauthorized persons to guess this privileged user name and password combination. Beginning with Windows Vista, the person who installs the operating system specifies an account that is the first member of the Administrator group and has full rights to configure the computer. The account cannot have the name Administrator, so this countermeasure is applied by default on new Windows Vista and Windows 7 installations. If a computer is upgraded from a previous version of Windows to Windows Vista or Windows 7, the account with the name Administrator is retained with all the rights and privileges that were defined for the account in the previous installation.
The built-in Administrator account cannot be locked out, regardless of how many times an attacker might use a bad password. This capability makes the Administrator account a popular target for brute-force attacks that attempt to guess passwords. The value of this countermeasure is lessened because this account has a well-known SID, and there are non-Microsoft tools that allow authentication by using the SID rather than the account name. Therefore, even if you rename the Administrator account, an attacker could launch a brute-force attack by using the SID to log on.
http://technet.microsoft.com/en-us/library/jj852273(v=ws.10).aspx
http://technet.microsoft.com/en-us/library/jj852265(v=ws.10).aspx
http://technet.microsoft.com/en-us/library/jj852219(v=ws.10).aspx
