Domain Controller it is Microsoft Windows Server 2000/2003 directory server that provides access controls over users, accounts, groups, computers and other network resources.
Domain Controller authenticate users and maintains directory services and the security database for a domain.
On Microsoft Servers, a domain controller (DC) is a server that responds to security authentication requests (logging in, checking permissions, etc.) within the Windows Server domain. A domain is a concept introduced in Windows NT whereby a user may be granted access to a number of computer resources with the use of a single username and password combination.
a domain controller stores one domain directory partition consisting of information about the domain in which it is located, plus the schema and configuration directory partitions for the entire forest. A Windows Server 2003 domain controller can also store one or more application directory partitions. There are also specialized domain controller roles that perform specific functions in an Active Directory environment. These specialized roles include global catalog servers and operations masters.
Domain Controller authenticate users and maintains directory services and the security database for a domain.
The domain admin account members are allowed administrative privileges for the entire domain. By default, the group has the local Administrator account on the Domain Controller as its member. A built-in group . After the first time installation of the OS, the only member of the group is the Administrator account. When a computer joins a domain, the Domain Admins group is added to the Administrators group. When a server becomes a domain controller, the Enterprise Admins group also is added to the Administrators group. The Administrators group has built-in capabilities that give its members full control over the system. The group is the default owner of any object that is created by a member of the group.
Routers, Switches, Modems, and Hubs, but mostly Routers
When you install Active Directory on a server, you promote the server to the role of a domain controller for a specified domain. When completing this process, you are prompted to specify a DNS domain name for the Active Directory domain for which you are joining and promoting the server.If during this process, a DNS server authoritative for the domain that you specified either cannot be located on the network or does not support the DNS dynamic update protocol, you are prompted with the option to install a DNS server. This option is provided because a DNS server is required to locate this server or other domain controllers for members of an Active Directory domain
On Microsoft Windows systems that are connected to a Domain Controller, Network Administrators may configure the Domain Controller to push applications to all computers in a certain scope (a group of computers, a group of users, or any reasonable combination thereof).In summary, to install applications on multiple computers at once in an Active Directory network, a Network Administrator needs to log into the Domain Controller, create a Group Policy Object that defines the scope (that is, group of users or computers it should apply to) that directs that computer to install the software when a user logs in. This is the most efficient way to install an application on multiple computers using only Microsoft technology.There are numerous third party applications available that can provide this sort of functionality on a local network without the need for a Domain Controller. These applications range from free to hundreds of dollars, and come with varying features and limitations. Should one decide to go this route, it is advisable that due diligence is done before purchasing or downloading a solution that may not work for your scenario.In either event, if the number of computers involved is less than the time it would take to configure a Domain Controller to push the installation, or installing third party software on all computers, then configuring a server to push the installers, it would more intuitive to simply install the software manually on all the computers involved.
Multi-master replication is a replication model in which any domain controller accepts and replicates directory changes to any other domain controller. Because multiple domain controllers are employed, replication continues, even if any single domain controller stops working.Single-master replication is a replication model in which one domain controller accepts and replicates directory changes to any other domain controller. This master domain controller is known as "Operation Master".Multi-master replication is a method of database replication which allows data to be stored by a group of computers, and updated by any member of the group.The multi-master replication system is responsible for propagating the data modifications made by each member to the rest of the group, and resolving any conflicts that might arise between concurrent changes made by different members.Multi-master replication can be contrasted with master-slave replication, in which a single member of the group is designated as the "master" for a given piece of data and is the only node allowed to modify that data item. Other members wishing to modify the data item must first contact the master node. Allowing only a single master makes it easier to achieve consistency among the members of the group, but is less flexible than multi-master replicationFlexible Single Master of Operation or just single master operation or operations master, is a feature of Microsoft's Active Directory (AD).FSMOs are specialized domain controller tasks, used where standard data transfer and update methods are inadequate. AD normally relies on multiple peer DCs, each with a copy of the AD database, being synchronized by multi-master replication. The tasks which are not suited to multi-master replication, and are viable only with a single-master database, are the FSMOs.Once per domain they only replicate to allThe Relative ID Master allocates security RIDs to DCs to assign to new AD security principals (users, groups or computer objects). It also manages objects moving between domains.The Infrastructure Master maintains security identifiers, GUIDs, and DN for objects referenced across domains. Most commonly it updates user and group links.This is another domain-specific role and its purpose is to ensure that cross-domain object references are correctly handled. For example, if you add a user from one domain to a security group from a different domain, the Infrastructure Master makes sure this is done properly. As you can guess however, if your Active Directory deployment has only a single domain, then the Infrastructure Master role does no work at all, and even in a multi-domain environment it is rarely used except when complex user administration tasks are performed. Because of this, the hardware requirements for machines holding this role are relatively small.The PDC Emulator operations master role processes all password changes in the domain. Failed authentication attempts due to a bad password at other domain controllers are forwarded to the PDC Emulator before rejection. This ensures that a user can immediately login following a password change from any domain controller, without having to wait several minutes for the change to be replicated. The PDC Emulator Operations Master role must be carefully sited in a location to best handle all password reset and failed-authentication forwarding traffic for the domain. The PDC emulator role holder retains the following functions:1.Password changes performed by other DCs in the domain are replicated preferentially to the PDC emulator.2.Authentication failures that occur at a given DC in a domain because of an incorrect password are forwarded to the PDC emulator before a bad password failure message is reported to the user.3.Account lockout is processed on the PDC emulator.4.backward compatibility,The PDC emulator performs all of the functionality that a Microsoft Windows NT 4.0 Server-based PDC or earlier PDC performs for Windows NT 4.0-based or earlier clients.Once per forestThe Schema Master maintains all modifications to the schema of the forest. The schema determines the types of objects permitted in the forest and the attributes of those objects.The Domain Naming Master tracks the names of all domains in the forest and is required to add new domains to the forest or delete existing domains from the forest. It is also responsible for group membership.
Global Catalog, Normal Domain Controller, and Configuration Domain Controller
In network first server has been install is call domain controller server.. If you wan t to check server is domain controller or, backup domain controller. you can check Run -> cmd -> net accounts If computer role will show PRIMARY it means your domain is PRIYMARY domain controller, if it will be show BACKUP, means you can assume my domain installed in my network is ADC (Additional Domain Controller) Hope you will get benefit.. Regards, Ranjeet karak New Delhi
Domain controller is the physical object.
No the reason it's called a primary Domain Controller is because it's the one controller that has all the domain names and address for that Domain.
In network first server has been install is call domain controller server.. If you wan t to check server is domain controller or, backup domain controller. you can check Run -> cmd -> net accounts If computer role will show PRIMARY it means your domain is PRIYMARY domain controller, if it will be show BACKUP, means you can assume my domain installed in my network is ADC (Additional Domain Controller) Hope you will get benefit.. Regards, Ranjeet karak New Delhi
Domain controller
Domain controller
a domain controller (DCO) is a server that responds to security authentication requests (logging in, checking permissions, etc.) within the Windows Server domain
What is the RID Master role? The RID Master is one of the operations master roles that exist in each domain in a forest. It controls the sequence number for the domain controllers within a domain. It provides a unique sequence of RIDs to each domain controller in a domain. When a domain controller creates a new object, the object is assigned a unique security ID consisting of a combination of a domain SID and a RID. The domain SID is a constant ID, whereas the RID is assigned to each object by the domain controller. The domain controller receives the RIDs from the RID Master. When the domain controller has used all the RIDs provided by the RID Master, it requests the RID Master to issue more RIDs for creating additional objects in the domain. When a domain controller exhausts its pool of RIDs, and the RID Master is unavailable, any new object in the domain cannot be created
Metadata cleanup is used to remove the records and data of an crashed Domain Controller or an unsuccesful demotion of a Domain Controller. It is executed on a working domain controller using ntdsutil.
window 2000 server domain controller and windows 2000 server member server in domain.
YES