Friday, January 20, 2012

Active Directory Interview Q & A

Ques 1: - What Is Active Directory?
Ans: -Active Directory consists of a series of components that constitute both its logical structure and its physical structure. It provides a way for organizations to centrally manage and store their user objects, computer objects, group membership, and define security boundaries in a logical database structure.
Ques 2: - What is the Purpose of Active Directory?
Ans: -Active Directory stores information about users, computers, and network resources and makes the resources accessible to users and applications. It provides a consistent way to name, describe, locate, access, manage, and secure information about these resources.
Ques 3: - Functions of Active Directory
Ans: - Active Directory provides the following functions:
  • Centralizes control of network resources
  • By centralizing control of resources such as servers, shared files, and printers, only
    authorized users can access resources in Active Directory.
  • Centralizes and decentralizes resource management
  • Administrators have Centralized Administration with the ability to delegate administration of subsets of the network to a limited number of individuals giving them greater granularity in resource management.
  • Store objects securely in a logical structure Active Directory stores all of the resources as objects in a secure, hierarchical logical Structure.
  • Optimizes network traffic The physical structure of Active Directory enables you to use network bandwidth more efficiently. For example, it ensures that, when users log on to the network, the authentication authority that is nearest to the user, authenticates them reducing the amount of network traffic.
Ques 4: - Explain the Logical Structure of Active Directory?
Ans: - Active Directory provides a means for designing a directory structure that should meet whatever needs an organization may have. However, because of the flexibility in design that it offers, an organization.s business structure should be examined prior to installing Active Directory, so that their current and future needs may be met. In Active Directory, resources are organized in a logical structure, and this grouping of resources logically enables a resource to be found by its name rather than by its physical location.
Ques 5: -What Are Objects?
Ans: - An object is a distinct set of attributes that represents a network resource (a user, a computer, a group policy, etc), and object attributes are characteristics of that object stored in the directory. For example, some of the attributes of a user object might include the user’s first name, last name, department, and e-mail address in addition to others.

Ques 6: - What Are Organizational Units?
Ans: - An organizational unit (OU) is a versatile container object used to organize objects within a domain into logical administrative groups. These logical administrative groups can include just one type of object or multiple types depending on how an administrator wants to structure it. Think of an OU like a large box that can contain many things, including other boxes (other OUs called sub-OUs), and those boxes can then contain additional boxes (additional sub-OUs) as well. 

Ques 4: -What is the Global Catalog ?
Ans: -  The global catalog contains a complete replica of all objects in Active Directory for its Host domain, and contains a partial replica of all objects in Active Directory for every other domain in the forest.

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