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Exam Prep Questions

Question 1

Two DNS servers are currently configured on the Windows Server 2003 network and are connected by high-speed links. Both servers are configured with identical hardware. Currently, one server is configured as a primary server and the other is configured as a secondary server. Both DNS servers are upgraded to domain controllers. You want to store the zone information within Active Directory and perform updates on either server. How should you proceed?

  1. In the Properties dialog box for the DNS server, select the General tab and click the Change button beside the zone type. Select the option to store the zone in Active Directory.

  2. In the Properties dialog box for the zone, select the Zone Type tab and click the Change button. Select the Active Directory–Integrated option.

  3. In the Properties dialog box for the zone, select the General tab and click the Change button beside the zone type. Select the option to store the zone in Active Directory.

  4. In the Properties dialog box for the DNS server, select the Zone Type tab and click the Change button. Select the Active Directory–Integrated option.

Answer C is correct. To change the zone type, right-click the zone within the DNS management console and click Properties. In the Properties dialog box, make sure the General tab is selected and click the Change button beside the zone type. Select the option to store the zone within Active Directory. Answer A is incorrect because the zone type is configured at the zone level. Answers B and D are incorrect because there is no Zone Type tab available in either the server's Properties dialog box or the zone's Properties dialog box. There is also no option known as Active Directory Integrated.

Question 2

You have just finished installing a DNS server on a Windows Server 2003 member server in the bayside.net domain. You need to add a record into the zone file for the mail server on the domain. Which type of resource record should be created?

  1. PTR

  2. A

  3. CNAME

  4. MX

Answer D is correct. Mail servers are identified within a zone file using Mail Exchanger (MX) records. Answer A is incorrect because PTR records are used to associate an IP address with its hostname. Answer B is incorrect because A records are used to map hostnames to IP addresses. Answer C is incorrect because CNAME records are used to assign alias names to those names that are already referenced in another record.

Question 3

A DNS server has been installed on a member server within a Windows Server 2003 domain. You want to provide fault tolerance for your zone so that name resolution can still continue if the DNS server goes offline. You plan to add another DNS server to the domain. In what type of role should the new DNS server be configured?

  1. Secondary server

  2. Master name server

  3. Caching-only server

  4. Backup name server

Answer A is correct. The new server should be configured as a secondary server. It will then maintain a copy of the DNS zone file. If the original DNS server goes offline, name resolution can still occur. Answer B is incorrect because master name servers are the source of the zone file for secondary servers. Answer C is incorrect because caching-only servers do not hold any zone information. Answer D is incorrect because there is no such DNS server role called a backup name server.

Question 4

Bayside has seven offices located in different parts of the United States. One central office hosts the primary DNS server. All office locations have their own DNS servers configured as secondary servers. The offices are currently connected with slow links, with no plans to upgrade them. The annual budget allows for the addition of a second DNS server at each of the locations. However, you do not want any more traffic generated from zone transfers on the WAN or the local networks. What type of DNS servers should you configure?

  1. Standard primary servers

  2. Standard secondary servers

  3. Master name servers

  4. Caching-only servers

Answer D is correct. By configuring caching-only servers within each location, you can decrease the name resolution response time for users. Because the caching-only servers do not maintain any zone information, no traffic is generated from zone transfers. Therefore, answers A, B, and C are incorrect.

Question 5

Sean is trying to determine the hostname associated with the IP address of 192.168.0.20 using the NSLookup command from Wrk02, but he is unsuccessful. He knows the IP address is associated with Wrk01. He can successfully resolve other hostnames on the network using this command. What could be causing the problem?

  1. There is no A record for Wrk01.

  2. There is no A record for Wrk02.

  3. There is no PTR record for Wrk01.

  4. There is no PTR record for Wrk02.

Answer C is correct. If the hostname cannot be resolved using the NSLookup command, adding a PTR to the zone file will allow you to resolve the IP address to a hostname. Answer B is incorrect because Wrk02 is not the hostname being resolved. Answers A and B are incorrect because A records are used to map hostnames to IP addresses, not vice versa.

Question 6

You want to clear the contents of the cache on your DNS server. How can you most easily accomplish this?

  1. Uninstall the DNS server service.

  2. Delete the cache.dns file.

  3. Use the Clear Cache option from the DNS server's Property window.

  4. Use the Clear Cache option from the Action menu.

Answer D is correct. Using the Clear Cache option from the Action menu within the DNS management console allows you to delete the contents of the cache file. Although uninstalling the service would clear the contents of the cache, it's not the easiest way to perform the task; therefore, answer A is incorrect. Answer B is incorrect because deleting the file will completely remove it. Answer C is incorrect because there is no Clear Cache option available from the server's property window.

Question 7

All of the DNS servers on your network are also configured as domain controllers. Zone information is stored within Active Directory. You want to verify that replication between DNS servers is occurring as it should. Which tool can you use to verify this?

  1. System Monitor

  2. Replication Monitor

  3. DNS management console

  4. DNS Monitor

Answer B is correct. If the support tools have been installed, you can use Replication Monitor to ensure that replication between DNS servers is occurring on a regular basis. Answer A is incorrect because System Monitor is used to monitor the real-time performance of a DNS server. Answer C is incorrect because the DNS management console is used to configure and manage a DNS server but cannot be used to monitor DNS replication. Answer D is incorrect because there is no such tool known as DNS Monitor.

Question 8

You are trying to configure secure updates on your DNS server. When you open the Properties window for the zone, you do not see the Secure Only option. What could be causing the problem?

  1. You are not logged on as the administrator.

  2. You do not have permission to dynamically update the zone database.

  3. Active Directory is not installed.

  4. The zone is configured as a primary zone.

Answer C is correct. The Secure Only option is available only if Active Directory is installed on the DNS server. Answer A is incorrect because this would not make the Secure Updates option unavailable. Answer B is incorrect because dynamic updates are performed when a computer or server updates resource records. Answer D is incorrect because primary and stub zones can be configured for secure updates.

Question 9

You have delegated the sales.bayside.net zone to another DNS server on the network. You want to ensure that the name server for bayside.net is notified anytime a new authoritative name server is added to the sales.bayside.net zone. What should you do?

  1. Using the Name Servers tab from the sales.bayside.net zone, configure the DNS server to notify the DNS server in the parent domain of any changes.

  2. Configure a stub zone on the DNS server within the parent domain.

  3. Configure a DNS server within the bayside.net zone to be a secondary server to the sales.bayside.net zone.

  4. Configure all zones to store information within Active Directory.

Answer C is correct. By configuring an authoritative DNS server within bayside.net to host a stub zone for the sales.bayside.net zone, any updates made to the authoritative name server resource records will be updated within the parent zone as well. None of the other options provided remedies this scenario effectively; therefore, answers A, B, and D are incorrect.

Question 10

Your corporate office contains the primary DNS server. One of the branch locations has a large number of users, so you install a secondary server to decrease name resolution response time. Because the link between the remote office and the corporate office is slow, you want to increase the interval at which the secondary server will poll the primary server for updates. How can you do this?

  1. In the Properties dialog box for the DNS server, select the Zone Transfers tab and increase the refresh interval.

  2. In the Properties dialog box for the zone, select the Start of Authority (SOA) tab and increase the refresh interval.

  3. In the Properties dialog box for the zone, select the Start of Authority (SOA) tab and increase the retry interval.

  4. In the Properties dialog box for the zone, select the General tab and increase the retry interval.

Answer B is correct. To increase the rate at which the secondary server polls for updates, select the Start of Authority (SOA) tab from the zone's Properties dialog box and increase the refresh interval. Answer A is incorrect because the interval at which a secondary server polls for updates is configured at the zone level. Answer C is incorrect because the retry interval defines how often the secondary server continues to poll if the server does not respond. Answer D is incorrect because you must configure the refresh interval, and it must be done from the Start of Authority (SOA) tab.

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