c# zxing qr code generator Lesson 2 in C#

Print QR Code in C# Lesson 2

Lesson 2
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Decoding QR Code In Visual C#
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Planning an Account Strategy
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4-23
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Types of User Accounts
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Making UPC Symbol In Visual C#.NET
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Windows Server 2003 provides two main types of user accounts, including:
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Local user accounts Local user accounts are created within a particular com puter s security database and govern access to resources on that computer. Local user accounts are intended to control access on stand-alone computers or comput ers in a work group. When you first install a server, local accounts are used and managed using the Computer Management console, under the node named Local Users and Groups. When you promote a server to become a domain controller, the Computer Management tool denies access to that node and the Active Directory Users and Computers tool is used instead (user accounts on domain controllers are stored in the Active Directory). Domain user accounts Domain user accounts are created within the Active Directory and allow users to log on to a domain and access resources anywhere on the network. You create a domain user account using the Active Directory Users and Computers tool. User accounts are replicated to all domain controllers in a domain, so any domain controller can authenticate a user once replication of the account has occurred.
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Built-In User Accounts
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Windows automatically creates a number of default user accounts called built-in user accounts. Both locally and within a domain there are two key accounts created: Administrator and Guest. The Administrator account is the most powerful user account because it is automati cally made a member of the Administrators group. This allows the ultimate level of control over an individual computer and grants almost all user rights to a user. The domain-level Administrator account has ultimate control over the entire domain; it belongs to the Domain Admins group by default (and in the root domain of a forest, it belongs to the Enterprise Admins and Schema Admins groups as well). The Adminis trator account cannot be deleted, but you can (and for security purposes, should) rename the account. You should also ensure that this account does not have a blank password, and you should not distribute the password to others. The Guest account is the other basic built-in user account, and it is used to provide a single set of permissions to any users who must log on to the network occasionally but who do not have regular user accounts. The Guest account is given this ability by being included automatically in the local Guest group. In domain environments, the Guest account is also a member of the Domain Guests group. The Guest account is dis abled by default and is really meant to be used only on low-security networks. You cannot delete the Guest account, but you can disable and/or rename it.
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4-24
Make Barcode In .NET
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Drawing Bar Code In None
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4
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Designing an Administrative Security Structure
Naming User Accounts
Planning a solid naming convention for user accounts lets you standardize the way users are identified in a domain. Using a consistent convention also helps users and administrators recognize and remember user names. There are a number of considerations to take into account when planning a naming strategy for users. These considerations include:
Every user must have a logon name that is unique within the domain. In addition, the user s full name must be unique within the OU where the account is stored. User logon names can contain more than 20 characters, but for compatibility with pre Windows 2000 operating systems, user logon names should be limited to 20 characters. User logon names are not case-sensitive and pre Windows 2000 logon names cannot contain the following characters: / \ [ ] : ; | = , + * < > Whatever convention you decide on must allow for some flexibility to accommo date users with identical logon names. If you decide on a convention, for example, that uses a user s first initial and last name, you may need to add a middle initial or even a second character from the first name if two names result in the same logon name. Compatibility with other applications must be considered. Some applications, such as e-mail systems, may have other characters that are not allowed in a user name, or they may have different length requirements.
There are many different conventions you could use to create names, and every administrator and designer has his or her favorite. However, a good naming conven tion should always provide names that are easy to remember and that provide enough detail to distinguish people with similar names.
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