c# qr code generator code project Troubleshooting Lab in C#

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Troubleshooting Lab
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1. What do these results tell you
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The computer is configured to connect to a DHCP server. However, the computer is not getting an IP address from a DHCP server successfully. You know this because the IP address is in the range assigned by APIPA.
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2. What would be your first troubleshooting step What should you do if that first step does not work
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You should type ipconfig /renew at the command prompt to force the computer to attempt to renew its lease with an available DHCP server. If the command is successful and the computer obtains a valid IP address, you have solved the problem. If the computer cannot obtain a valid IP address, you should first verify that the DHCP server is working. (It is likely that the DHCP is working because other users on the network can access the network.) If DHCP is functioning properly, you should check to make sure that the network cable is connected to the network adapter and that the network adapter is functioning properly.
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14 Overview of Active Directory Service
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Exam Objectives in this :
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This chapter does not cover any specific exam objectives. It is intended to introduce you to Active Directory directory service.
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Why This Matters
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A directory service uniquely defines users and resources on a network. Directory services based on Active Directory technology in Microsoft Windows 2000 Server or Windows Server 2003 provide a single point of network management, allowing you to add, remove, and relocate users and resources easily. This chapter introduces you to the Active Directory directory service. Lessons in this :
Lesson 1: Overview of Active Directory . . . . . . . . . . . . . . . . . . . . . . . . . . . .14-2 Lesson 2: Important Active Directory Concepts . . . . . . . . . . . . . . . . . . . . . . 14-14
Note
Active Directory is not a service that you can run on a computer running Windows XP Professional. Active Directory runs on a computer running Windows 2000 Server or Windows Server 2003 that is part of a domain. After the Active Directory service is installed on a server, that server becomes a domain controller. Computers running Windows XP Professional can become members of the domain.
Before You Begin
To complete this chapter, you must have a computer that meets the minimum hardware requirements listed in the preface, About This Book. You must also have Windows XP Professional installed on your computer. You do not need access to an Active Directory domain in order to complete this chapter.
14-1
14-2
14
Overview of Active Directory Service
Lesson 1: Overview of Active Directory
Most computers running Windows XP Professional on large networks are clients in an Active Directory domain running Windows 2000 Server or Windows Server 2003. Much like a phone book acts as a directory of people s phone numbers and street addresses, Active Directory acts as a directory for resources on a network. Active Directory catalogs information about all the objects on a network, including users, computers, and printers, and makes that information available throughout a network. Active Directory provides a consistent way to name, find, manage, and secure information about these resources.
After this lesson, you will be able to
Identify the advantages of Active Directory Describe the logical structure of Active Directory Describe the physical structure of Active Directory Describe replication within an Active Directory site
Estimated lesson time: 15 minutes
The Advantages of Active Directory
In a workgroup environment, each computer running Windows XP Professional is responsible for maintaining its own security database. Local user accounts are used to log on to the computer and to control access to resources on the computer. Security and administration in a workgroup are distributed. You must create local user accounts on each computer, and although you can often manage a computer remotely, you must manage each computer separately. The larger the network you are working with, the more overhead this distributed management creates. Active Directory simplifies the security and administration of resources throughout a network (including the computers that are part of the network) by providing a single point of administration for all objects on the network. Active Directory organizes resources hierarchically in domains, which are logical groupings of servers and other network resources. Each domain includes one or more domain controllers. A domain controller is a computer running Windows 2000 Server or Windows Server 2003 on which Active Directory is installed. The domain controller stores a complete replica of the domain directory. To simplify administration, all domain controllers in the domain are peers. You can make changes to any domain controller, and the updates are replicated to all other domain controllers in the domain.
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