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Implementing a DNS Infrastructure
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8. In the IP Address text box, type the IP address currently assigned to Computer2, click Add, and then click Next. The Completing The New Zone Wizard page appears. 9. Click Finish. The sub.domain1.local zone now appears in the DNS console tree under the Forward Lookup Zones node. 10. Right-click the Sub.domain1.local node in the console tree (not the details pane), and then select Transfer From Master.
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If you receive an error message, wait 10 seconds and try step 15 again.
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11. When the zone loads successfully, the node shows only three resource records: the SOA resource record for the zone and the NS resource records pointing to Computer2 and Computer1. 12. Log off Computer1.
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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. What is the most common use of a stub zone
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2. Which of the following is not a benefit of using a stub zone a. Improving name resolution performance b. Keeping foreign zone information current c. Simplifying DNS administration d. Increasing fault tolerance for DNS servers
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Lesson 5
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Deploying Stub Zones
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3. When would you choose to implement a stub zone over a secondary zone When would you choose to implement a secondary zone over a stub zone
Lesson Summary
A stub zone is an abbreviated copy of a zone, updated regularly, that contains only the NS records belonging to a master zone. Stub zones are most frequently used to keep track of the name servers authoritative for delegated zones and are most frequently hosted on the parent DNS servers of those delegated zones. Stub zones can also be used to facilitate name resolution across domains in a man ner that avoids searching the DNS namespace for a common parent server. To create a stub zone, you open the New Zone Wizard by right-clicking the DNS server icon in the DNS console and selecting New Zone. In the New Zone Wizard, you select the stub zone type and then follow the wizard s instructions. To configure a stub zone, you need to specify at least one name server, the master, with an IP address that doesn t change. Any new name servers that you add to the master zone are later updated to the stub zone automatically through zone transfers. Stub zones do not serve the same purpose as secondary zones and are not an alternative when planning for fault tolerance, redundancy, or load sharing.
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Implementing a DNS Infrastructure
Case Scenario Exercise
You have been hired as a consultant by Lucerne Publishing, which is in the process of redeploying its DNS server infrastructure on Windows Server 2003. Lucerne Publish ing s in-house network designer, Klaus, has requested your services for your expertise in Windows Server 2003. Lucerne Publishing has its headquarters in Lucerne and has two branch offices in Bern and Geneva. The Lucerne branch hosts the parent domain, lucernepublishing.com. The Bern and Geneva offices each host subdomains and contain their own domain controllers. Figure 5-36 presents the relevant portion of the network.
Lucerne lucernepublishing.com
Windows Server 2003 domain controller DNS server
Bern bern.lucernepublishing.com
Geneva gen.lucernepublishing.com
Windows Server 2003 domain controller DNS server
Windows Server 2003 domain controller DNS server
Figure 5-36
Lucerne Publishing s network
Klaus wants to achieve four goals in his network: A. Minimize name resolution traffic across WAN links B. Minimize DNS replication traffic across WAN links C. Secure DNS replication traffic across WAN links D. Optimize name resolution traffic for client computers
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Implementing a DNS Infrastructure
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1. Which of these goals are met by deploying an Active Directory integrated zone with the default replication scope on domain controllers in all three locations throughout the network
2. If an Active Directory integrated zone is deployed for the lucernepublishing.com domain, which option should you recommend be configured in the Change Zone Replication Scope dialog box shown in Figure 5-37 Assume that improving name resolution response time is more important than minimizing network traffic.
Figure 5-37
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