单项选择题
A. Configure the burst handling option on DC2.
B. Configure DC1 and DC2 as WINS push/pull replication partners.
C. In the WINS server properties on DC1, increase the Renew interval setting to 1 day.
D. In the WINS server properties on DC2, increase the Renew interval setting to 1 day.
单项选择题 Your company has two servers that run Windows Server 2008 R2 named Server2 and Server3. Both servers have the DNS Server server role installed. Server3 is configured to forward all DNS requests to Server2. You update a DNS record on Server2. You need to ensure that Server3 is able to immediately resolve the updated DNS record. What should you do？（）
单项选择题 Your company has a single Active Directory forest that has an Active Directory domain named na.contoso.com. A server named Server1 runs the DNS Server server role. You notice stale resource records in the na.contoso.com zone. You have enabled DNS scavenging on Server1. Three weeks later, you notice that the stale resource records remain in na.contoso.com. You need to ensure that the stale resource records are removed from na.contoso.com. What should you do？（）
单项选择题 Contoso Ltd. has a single Active Directory forest that has five domains. Each domain has two DNS servers. Each DNS server hosts Active Directory-integrated zones for all five domains. All domain controllers run Windows Server 2008 R2.Contoso acquires a company named Tailspin Toys. Tailspin Toys has a single Active Directory forest that contains a single domain. You need to configure the DNS system in the Contoso forest to provide name resolution for resources in both forests. What should you do？（）