单项选择题
A.Create an Active Directory-integrated zone at the main office site.
B.Create a standard primary zone at the main office site and at each branch office site.
C.Create a standard primary zone at the main office site. Create a secondary zone at each branch office site.
D.Create a standard primary zone at the main office site. Create an Active Directory-integrated stub zone at each branch office site.
单项选择题 Your network contains two DHCP servers. The DHCP servers are named DHCP1 and DHCP2. The internal network contains 1，000 DHCP client computers that are located on a single subnet. A routerseparates the internal network from the Internet. The router has a single IP address on the internal interface. DHCP1 has the following scope information. èStarting IP address： 172.16.0.1 èEnding IP address： 172.16.7.255 èSubnet mask： 255.255.240.0 You need to provide a fault-tolerant DHCP infrastructure that supports the client computers on the internal network. In the event that a DHCP server fails， all client computers must be able to obtain a valid IP address. How should you configure DHCP2？（）
单项选择题 Your network is configured as shown in the following diagram.You deploy an enterprise certification authority （CA） on the internal network. You also deploy a Microsoft Online Responder on the internal network. You need to recommend a secure method for Internet users to verify the validity of individual certificates. The solution must minimize network bandwidth. What should you recommend？（）
单项选择题 Your network contains an Active Directory forest named contoso.com. You plan to deploy a new child domain named branch.contoso.com. The child domain will contain two domain controllers. Both domain controllers will have the DNS Server server role installed.All users and computers in the branch office will be members of the branch.contoso.com domain.You need to plan the DNS infrastructure for the child domain to meet the following requirements： èEnsure resources in the root domain are accessible by fully qualified domain names. èEnsure resources in the child domain are accessible by fully qualified domain names. èProvide name resolution services in the event that a single server fails for a prolonged period of time. èAutomatically recognize when new DNS servers are added to or removed from the contoso.com domain. What should you include in your plan？（）