Your company has four DNS serve

第1题：

our company has a single active directory forest that has six domains. All DNS servers in the forest run windows serve 2008. You need to ensure that all public DNS queries are channeled though a single-caching-only DNS server.Which two actions should you perform? （）

• A、Disable the root hints.
• B、Enable BIND secondaries.
• C、Configure a forwarder to the caching DNS server.
• D、Configure a GlobalNames host (A) record for the hostname of the caching DNS server.

第2题：

Your company has an Active Directory domain. The main office has a DNS server named DNS1 that is configured with Active Directory-integrated DNS. The branch office has a DNS server named DNS2 that contains a secondary copy of the zone file from DNS1. The two offices are connected with an unreliable WAN link. You add a new server to the main office. Five minutes after adding the server， a user from the branch office reports they are unable to connect to the new server. You need to ensure that the user is able to connect to the new server. What should you do（）

• A、Clear the cache on DNS2.
• B、Reload the zone on DNS1.
• C、Refresh the zone on DNS2.
• D、Export the zone from DNS1 and import the zone to DNS2

第3题：

第4题：

Your company has four DNS servers that run Windows Server 2008 R2. Each server has a static IP address.You need to prevent DHCP from assigning the addresses of the DNS servers to DHCP clients.What should you do？（）

• A、Create a new scope for the DNS servers.
• B、Create a reservation for the DHCP server.
• C、Configure the 005 Name Servers scope option.
• D、Configure an exclusion that contains the IP addresses of the four DNS servers.

第5题：

Your company has four DNS servers that run Windows Server 2008. Each server has a static IP address. You need to prevent DHCP from assigning the addresses of the DNS servers to DHCP clients. What should you do？ （）

• A、 Create a new scope for the DNS servers.
• B、 Create a reservation for the DHCP server
• C、 Configure the 005 Name Servers scope option
• D、 Configure an exclusion that contains the IP addresses of the four DNS servers

第6题：

Your company has an Active Directory domain named contoso.com. The company network has two   DNS servers named DNS1 and DNS2.   The DNS servers are configured as shown in the following table.   DNS1  DNS2   _msdcs.contoso.com  contoso.com  .(root)   _msdcs.contoso.com   contoso.com   Domain users, who are configured to use DNS2 as the preferred DNS server, are unable to connect to Internet Web sites.   You need to enable Internet name resolution for all client computers.   What should you do（）

• A、Create a copy of the .（root） zone on DNS1.
• B、Update the list of root hints servers on DNS2.
• C、Update the Cache.dns file on DNS2. Configure conditional forwarding on DNS1.
• D、Delete the .（root） zone from DNS2. Configure conditional forwarding on DNS2.

第7题：

Your company has a single Active Directory forest that has six domains.All DNS servers in the forest run Windows Server 2008 R2.You need to ensure that all public DNS queries are channeled through a single-caching-only DNS server.Which two actions should you perform？（）

• A、Disable the root hints.
• B、Enable BIND secondaries.
• C、Configure a forwarder to the caching DNS server.
• D、Configure a GlobalNames host (A) record for the hostname of the caching DNS server.

第8题：

Your company has a main office and two branch offices that are connected by wan links. The main office runs the DNS service on three domain controllers. The zone for your domain is configure as an active directory-integrated zone.Each branch office has a single member server that hosts a secondary zone for the domain. The DNS servers in the branch offices use the main office DNS server as the DNS master server for the zone. You need to minimize DNS zone transfer ove r the WAN links. What should you do?（）

• A、Decrease the retry interval setting in the start of authority (SOA) record for the zone
• B、Decrease the refresh interval setting in the start of authority (SOA) record for the zone.
• C、Increase the refresh interval setting in the start of authority (SOA) record for the zone.
• D、Disable the netmask ordering in the properties of the DNS master serve for the zone.

第9题：

Your company has a main office and five branch offices that are connected by WAN links. The  company has an Active Directory domain named contoso.com. Each branch office has a member  server configured as a DNS server. All branch office DNS servers host a secondary zone for  contoso.com.     You need to configure the contoso.com zone to resolve client queries for at least four days in the  event that a WAN link fails.   What should you do（）

• A、Configure the Expires after option for the contoso.com zone to 4 days.
• B、Configure the Retry interval option for the contoso.com zone to 4 days.
• C、Configure the Refresh interval option for the contoso.com zone to 4 days.
• D、Configure the Minimum （default） TTL option for the contoso.com zone to 4 days.

第10题：

Your company has a single Active Directory forest that has six domains. All DNS servers in the forest run Windows Server 2008. You need to ensure that all public DNS quieries are channeled through a singlecahing- only DNS server. Which two actions should you perform？（） 

• A、Disable the root hints
• B、Enable BIND secondaries
• C、Configure a forwarder to the caching DNS server
• D、Configure a GlobalNames host （A） record for the hostname of the caching DNS server