Cảm ơn bạn đã cho chúng tôi cơ hội để phục vụ nhu cầu chứng nhận của bạn. có thể uy quyền cho an tên domain phụ lưu trữ trong fields tích hợp Active Directory and config các máy chủ BIND secondaries Khu Vực this to increase Cường capability Chiu lỗi and available. | Planning Server Roles and Server Security Chapter 2 59 Exam Warning A server without AD installed on it can still deliver a variety of services file storage and access to other resources. However until AD is installed the server cannot authenticate domain users or provide the other functions of a domain controller. Once AD is installed the member server ceases to be a member server and becomes a domain controller. A Windows Server 2003 computer can be changed into a domain controller by using the Configure Your Server Wizard or by using the Active Directory Installation Wizard DCPROMO . DCPROMO is a tool that promotes a member server to domain controller status. During the installation a writable copy of the AD database is placed on the server s hard file used to store directory information is called and by default is located in systemroot changes are made to the directory they are saved to this file. Each domain controller retains its own copy of the directory containing information about the domain in which it is located. If one domain controller becomes unavailable users and computers can still access the AD data store on another domain controller in that domain. This allows users to continue logging on to the network even though the domain controller that is normally used is unavailable. It also allows computers and applications that require directory information to continue functioning while one of these servers is down. Because a domain can have more than one domain controller changes made to the directory on one domain controller must be updated on others. The process of copying these updates is called replication which is used to synchronize information in the directory. Without replication features in AD would fail to function properly. For example if you added a user on one domain controller the new account would be added to the directory store on that server. This would allow the user to log on to that domain controller but he
