单项选择题
A.Enable the Disable recursion setting in the advanced properties of Server1.
B.Enable Fail on load if bad zone data setting in the advanced properties of Server1.
C.Enable the Secure cache against pollution setting in the advanced properties of Server1.
D.Enable the Enable automatic scavenging of stale resource records setting in the advanced properties of Server1 and set it to 7 days.
多项选择题 You are the network administrator for your company. All servers run Windows Server 2003. The company’s main office is located in New York City， and four branch offices are located in various North American cities. The network is configured as shown in the exhibit. （Click the Exhibit button.） Access to the Internet is provided by a Network Address Translation （NAT） server located in the Montreal office. The IP address of the NAT server is 192.168.10.254. Users in the Los Angeles office report that they cannot connect to the Internet. Users in the New York office report that they can successfully connect to the Internet. From a computer in the Los Angeles office， you cannot connect to servers located in the Montreal office by using their IP address. You want to find out where the communication failure resides by running a command prompt on a computer in the Los Angeles office. What are two possible ways to achieve this goal？（）
单项选择题 You are the network administrator for your company. All servers run Windows Server 2003. You configure a server named Server2 as a Network Address Translation （NAT） server. Server2 has a single network adapter and a modem. Server2 connects to the Internet through a demand-dial connection. Users report that when they attempt to connect to Internet Web sites， they intermittently receive the following error message： "Page not found." After waiting for several minutes， they can connect to the Web sites. These errors occur throughout the day. You need to configure Server2 to allow users to always connect to Internet Web sites. What should you do？（）
多项选择题 You are the administrator of an Active Directory domain. All servers run Windows Server 2003. You configure a server named Server3 as the DNS server for the domain.The company recently started using a new ISP. Since the change to the new ISP occurred， users report that they cannot access Internet Web sites by using their fully qualified domain names （FQDNs）.You manually configure a test computer to use the DNS server address of the new ISP. The test computer can successfully access Internet Web sites by using their FQDNs.You need to ensure that network users can access Internet Web sites by using their FQDNs， while ensuring that user access to internal resources is not disrupted. What are two possible ways to achieve this goal？（）