zxing qr code generator c# Lesson 1: Understanding Groups . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . in C#

Drawer QR-Code in C# Lesson 1: Understanding Groups . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Lesson 1: Understanding Groups . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
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Lesson 2: Creating and Administering Groups . . . . . . . . . . . . . . . . . . . . . . 8-23 Lesson 3: Administration Strategies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-30
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Before You Begin
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To complete the lessons in this chapter, you must
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Prepare your test environment according to the descriptions given in the Getting Started section of About This Book Complete the practices for installing and configuring Active Directory as discussed in 2, Installing and Configuring Active Directory Learn to use Active Directory administration tools as discussed in 3, Administering Active Directory
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Administering Groups
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Complete the practices for configuring sites and replication as discussed in 5, Configuring Sites and Managing Replication Complete the practices for implementing an organizational unit (OU) structure as discussed in 6, Implementing an OU Structure Complete the practices for creating and maintaining user accounts as discussed in 7, Administering User Accounts
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Lesson 1
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Understanding Groups
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Lesson 1: Understanding Groups
Before you can create groups, you must understand the purpose of groups and how they are used to simplify administration tasks. This lesson introduces you to the group types and scopes you can create in Windows Server 2003 and the rules for group mem bership. You also learn about the various categories of default groups. At the end of the lesson, you learn how to plan a group strategy.
After this lesson, you will be able to
Explain the purpose of groups Explain the purpose of security and distribution group types Explain the characteristics of domain local, global, and universal group scopes Explain the purpose of local groups Describe the types of default groups Plan a group strategy
Estimated lesson time: 30 minutes
Introduction to Groups
A group is a collection of user accounts. Groups simplify administration by allowing you to assign permissions and rights to a group of users rather than having to assign permissions to each individual user account, as shown in Figure 8-1. Users can be members of more than one group. Permissions control what users can do with a resource, such as a folder, file, or printer. When you assign permissions, you give users the capability to gain access to a resource and you define the type of access that they have. For example, if several users need to read the same file, you would add their user accounts to a group. Then you would give the group permission to read the file.
Assign permissions once for a group - instead of Assign permissions for each user account
User Permissions Group Resources User Permissions Permissions
User Permissions
Figure 8-1 Groups simplify administration
8
Administering Groups
In addition to user accounts, you can add other groups, contacts, and computers to groups. You add groups to other groups to create a consolidated group and reduce the number of times that you need to assign permissions. However, you should use cau tion to add only those groups that are absolutely necessary. You add computers to groups to simplify giving a system task on one computer access to a resource on another computer.
Group Types
You can create groups for security-related purposes, such as assigning permissions, or for nonsecurity purposes, such as sending e-mail messages. To facilitate this, Active Directory directory service provides for the use of two group types: security and distribution. The group type determines how you use the group. Both types of groups are stored in the database component of Active Directory, which allows you to use them anywhere in your network.
Security Groups
Windows Server 2003 uses only security groups, which you use to assign permissions to gain access to resources. Programs that are designed to search Active Directory can also use security groups for nonsecurity purposes, such as retrieving user information for use in a Web application. Thus, a security group has all the capabilities of a distri bution group.
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