Lesson 3 in .NET

Create QR Code ISO/IEC18004 in .NET Lesson 3

Lesson 3
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Troubleshooting Computer Accounts
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5-23
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e. Change Desktop03 to a workgroup. f. Delete the computer account. g. Disable the computer account.
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The correct answer is steps e, c, d, and b. Step e does not have to occur first; it just has to be done anytime before step b. Steps c and d must occur, in that order, before step b, which must be the last step.
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Exercise 2: Recover from Computer Account Problems
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1. Open Active Directory Users And Computers. 2. Click Find Objects In Active Directory and search for Desktop03. 3. Desktop03 appears in the search results because you created it in Lesson 1. 4. Having identified that the account does exist, reset the account by right-clicking Desktop03 and choosing Reset Account.
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Lesson Review
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The following questions are intended to reinforce key information presented in this lesson. If you are unable to answer a question, review the lesson materials and try the question again. You can find answers to the questions in the Questions and Answers section at the end of this chapter. 1. After a period of expansion, your company created a second domain. Last weekend, a number of machines that had been in your domain were moved to the new domain. When you open Active Directory Users And Computers, the objects for those machines are still in your domain, and are displayed with a red X icon. What is the most appropriate course of action a. Enable the accounts b. Disable the accounts c. Reset the accounts d. Delete the accounts 2. A user reports that during a logon attempt, a message indicated that the computer cannot contact the domain because the domain controller is down or the com puter account may be missing. You open Active Directory Users And Computers and discover that the account for that computer is missing. What steps should you take
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5-24
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5
Computer Accounts
3. A user reports that during a logon attempt, a message indicates that the computer cannot contact the domain because the domain controller is down or the com puter account may be missing. You open Active Directory Users and Computers and that computer s account appears normal. What steps should you take
Lesson Summary
Computers maintain accounts that, like users, include a SID and group memberships. Be careful about deleting computer objects. Disabling computer objects allows you to enable the objects again, when the computer needs to participate in the domain. Problems with computer accounts are generally quite evident, with error messages and events logged that indicate problems in an account, a password, a secure channel or a trust relationship. Using the four rules in Lesson 3, you can troubleshoot just about any computer account problem.
Case Scenario Exercise
Contoso decides to open two branch offices: East and West. Computers are purchased for 10 sales representatives in each office. The asset tags assigned to the computers are shown in the following table.
East Branch EB-2841 EB-2842 EB-2843 EB-2844 EB-2845 EB-2846 EB-2847 EB-2848 EB-2849 EB-2850 West Branch WB-3748 WB-3749 WB-3750 WB-3751 WB-3752 WB-3753 WB-3754 WB-3755 WB-3756 WB-3757
Your job is to prepare Active Directory for the deployment of these computers.
5
User Accounts
5-25
Exercise 1: Create OUs
Create two OUs in the contoso.com domain: EastBranch and WestBranch. Type the names as shown. Do not put a space between the words.
Exercise 2: Script the Creation of Computer Accounts
1. Open Notepad. 2. Type a line for each computer, following this example:
DSADD COMPUTER CN=EB-2841,OU=EastBranch,DC=Contoso,DC=COM -desc Sales Rep Computer -loc East Branch Office
Be sure to modify the CN= parameter to match the asset tag of each computer, and the OU= and -loc parameters to reflect the name and location description of the branch office for each computer. 3. Save the file as C:\ScriptComputers.bat and be sure to surround the name with quotation marks, or Notepad will add a .txt extension automatically. 4. Open a command prompt and type c:\scriptcomputers. 5. Confirm the successful generation of the computer accounts by examining the EastBranch and WestBranch OUs. The MMC does not refresh automatically, so press F5 to refresh if you do not see the new computers initially.
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