Practice Questions

Question 1	Riverside consists of a number of different client platforms including Windows 2000, Windows NT 4.0, and Windows 95. You want to reduce the need to manually update resource records. All zones on the DNS servers are configured as primary and secondary zones. How can you configure dynamic updates so that all records are updated regardless of the platform a client is running? [Choose all that apply.] A. Convert all zones to Active Directory “integrated zones. B. Configure the zones to accept dynamic updates. C. Configure the DHCP servers to perform updates for clients that do not support dynamic updates. D. Install the Active Directory client on all pre-Windows 2000 workstations. E. Configure the properties of TCP/IP on all workstations so hostnames are automatically registered.
A1:	Answers B and C are correct. To support dynamic updates in this example, the primary zones must be configured to accept dynamic updates and the DHCP servers must be configured to update records for clients that cannot perform the updates themselves . Answer A is incorrect. The only reason why you would need to change the zone to an Active Directory “integrated zone is to support secure updates. Answer D is incorrect because the Active Directory client does not provide the functionality of performing dynamic updates. Answer E is incorrect because this option is available only on Windows 2000 platforms.
Question 2	What is the purpose of a reverse lookup zone? A. It maps hostnames to IP addresses. B. It maps MAC addresses to IP addresses. C. It maps IP addresses to MAC addresses. D. It maps IP addresses to hostnames.
A2:	Answer D is correct. Reverse lookup zones are used to map IP addresses to their associated hostnames. Answer A is incorrect because this is the purpose of a forward lookup zone. Answers B and C are incorrect. ARP is responsible for mapping IP addresses to MAC addresses via a broadcast.
Question 3	Sean is configuring the first domain controller in a Windows 2000 domain. During the installation of Active Directory, he chooses to have DNS installed and configured automatically. What type of zone is configured during the installation? A. Caching-only zone B. Active Directory “integrated zone C. Standard primary zone D. Standard secondary zone
A3:	Answer B is correct. When DNS is installed and configured during the installation of Active Directory, the zone is automatically configured as an Active Directory “integrated zone. Therefore, answers A, C, and D are incorrect.
Question 4	Two DNS servers are currently configured on the Windows 2000 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 as a secondary. Both DNS servers are also Windows 2000 domain controllers. You want to convert the zone to Active Directory “integrated so updates can take place on either server. How should you proceed? A. In the Properties dialog box for the DNS server, select the General tab and click the Change button. B. In the Properties dialog box for the zone, select the Zone Type tab and click the Change button. C. In the Properties dialog box for the zone, select the General tab and click the Change button. D. In the Properties dialog box for the DNS server, select the Zone Type tab and click the Change button.
A4:	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, be sure the General tab is selected and click the Change button. 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.
Question 5	Due to internal reorganization within your network, you had to make recent changes to the host records within DNS. Some of the clients on the network now report that they are unable to connect to some hosts . Which of the following commands can you use to solve the problem? A. ipconfig /deletedns B. ipconfig /registerdns C. ipconfig /flushdns D. ipconfig /displaydns
A5:	Answer C is correct. Using the ipconfig /flushdns command allows you to flush and reset the contents of the client resolver cache. This is useful if changes have been made to DNS making the cached entries now invalid. Answer A is incorrect as there is no such parameter. Answer B is incorrect because this parameter is used to renew a client's registration with DNS. Answer D is incorrect because this parameter simply displays the contents of the cache.
Question 6	Sean has just finished installing a DNS server on a Windows 2000 member server in the bayside.net domain. He needs to add a record into the zone file for the mail server on the domain. Which type of resource record should be created? A. PTR B. A C. CNAME D. MX
A6:	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 7	A DNS server has been installed on a member server within a Windows 2000 domain. You want to provide fault tolerance for your zone so that name resolution can still continue in the event 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? A. Secondary server B. Master Name server C. Caching-only server D. Backup Name server
A7:	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 8	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? A. In the Properties dialog box for the DNS server, select the Zone transfers tab and increase the refresh interval. B. In the Properties dialog box for the zone, select the Start of Authority (SOA) tab and increase the refresh interval. C. In the Properties dialog box for the zone, select the Start of Authority (SOA) tab and increase the retry interval. D. In the Properties dialog box for the zone, select the General tab and increase the retry interval.
A8:	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 in 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.
Question 9	You have received so many complaints lately from users in different branch offices that it is taking a long time for Internet names to be resolved. All the calls seem to be coming from locations with slow connections to the main office. What should you do? A. Upgrade the connections to high-speed links. B. Upgrade all client workstations to Windows 2000 to take advantage of dynamic updates. C. Install secondary servers at each of the different locations. D. Increase the refresh interval on the DNS server at the main office location.
A9:	Answer C is correct. Placing secondary servers at each of the locations allows each site to take advantage of caching and local name resolution. Answer A is incorrect because it would be more efficient to configure a secondary server than to upgrade the connections. Answer B is incorrect because dynamic updates have no impact on name resolution response time. Answer D is incorrect because configuring the refresh interval will have no impact if there are no secondary servers configured.
Question 10	You recently upgraded all the client workstations on the network to Windows 2000 Professional. Two DNS servers on the network run Windows NT 4.0 ”one is a primary server and the other is a secondary. There is also a Windows 2000 DHCP server. You notice that the DNS zone file is not being dynamically updated by the Windows 2000 clients. What must you do? A. Configure the DHCP server to perform the updates. B. Install Service Pack 6 on the DNS servers. C. Configure the clients to perform dynamic updates through the properties of TCP/IP. D. Upgrade the DNS servers to Windows 2000.
A10:	Answer D is correct. Windows NT 4.0 DNS servers do not support dynamic DNS; therefore, the servers need to be upgraded to Windows 2000. Thus, answers A, B, and C are incorrect.