Cer-tech .com has a single Active Directory domain called cer-tech.com. All servers in the domain runWindows Server 2008. There are two domain controllers in the network： ED1 and ED2 and the DNS service is installed on the domain controllers. Both DNS servers host Active Directory integrated zones thatare configured to allow the most secured updates. ED1 has a Key Management Services （KMS） installedand activated. During maintenance， you find that the service locater records from the cer-tech.com zonehosted on Server02 and Server02 are missing. You have to force registration of the KMS service locatorrecords in the Cer-tech .com zone. What should you do to correct this problem？（）

• A、Execute slmgr.vbs script on ED1 at the command prompt
• B、Configure non-secure updates on cer-tech.com
• C、Execute the net stop netlogon command on ED2 and run net start logon command
• D、At the command prompt on ED1， run net stop sppsvc command and after that execute the net start sppsvc command