多项选择题 You are a network administrator for Alpine Ski House. The internal network has an Active Directory-integrated zone for the alpineskihouse.org domain. Computers on the internal network use the Active Directory-integrated DNS service for all host name resolution.   The Alpine Ski House Web site and DNS server are hosted at a local ISP. The public Web site for Alpine Ski House is accessed at www.alpineskihouse.com. The DNS server at the ISP hosts the alpineskihouse.com domain.   To improve support for the Web site， your company wants to move the Web site and DNS service from the ISP to the company’s perimeter network. The DNS server on the perimeter network must contain only the host （A） resource records for computers on the perimeter network.   You install a Windows Server 2003 computer on the perimeter network to host the DNS service for the alpineskihouse.com domain. You need to ensure that the computers on the internal network can properly resolve host names for all internal resources， all perimeter resources， and all Internet resources.   Which two actions should you take？ （）

单项选择题 You are a network administrator for your company. The network consists of a single Active Directory domain. All domain controllers and member servers run Windows Server 2003， Enterprise Edition. All client computers run Windows XP Professional.   The company has one main office and one branch office. The two offices are connected by a T1 WAN connection. There is a hardware router at each end of the connection. The main office contains 10，000 client computers， and the branch office contains 5，000 client computers.   You need to use DHCP to provide IP addresses to the Windows XP Professional computers in both offices. You need to minimize network configuration traffic on the WAN connection. Your solution needs to prevent any component involved in the DHCP architecture from becoming a single point of failure.   What should you do？  （）

单项选择题 You are a network administrator for your company. The network consists of a single Active Directory forest that contains three domains. The functional level of the forest and of all three domains is Window Server 2003. The company has a main office and 30 branch offices. Each branch office is connected to the main office by a 56-Kbps WAN connection. You configure the main office and each branch office as a separate Active Directory site. You deploy a Windows Server 2003 domain controller at the main office and at each branch office. Each domain controller is configured as a DNS server.   You can log on to the network from client computers in the branch offices at any time. However， users in the branch offices report that they cannot log on to the network during peak hours.   You need to allow users to log on to the network from branch office computers. You do not want to affect the performance of the branch office domain controllers. You need to minimize Active Directory replication traffic across the WAN connections.   What should you do？ （）