dns resolution

第1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.

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第2题

You are designing a DNS name resolution strategy to allow all users access to internal and external web sites. What should you do?（）A、Allow zone transfers to any DNS server.  B、Create a new stub zone for the DNS zone on the DNS server.  C、Configure the DNS server to forward all unanswered queries to a DNS server located at the ISP.D、Add the DNS server located at the ISP to the list of name servers for the fourthcoffee.com DNS zone.

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第3题

You are a network administrator for A. Datum Corporation. The network consists of a single Active Directory domain named adatum.net.  Users regularly browse the internal network and the Internet from their client computers. All Web and e-mail hosting for a separate DNS domain named adatum.com is outsourced to an ISP. All name resolution requests for adatum.com are resolved by the ISP. You have no administrative control over the DNS servers at the ISP. You cannot list the contents of adatum.com by using the nslookup command on the DNS servers at the ISP.  A Windows Server 2003 computer named Server1 is configured with a primary zone for adatum.net. All root hints have been removed from Server1. All client computers refer to this DNS server for name resolution. You need to configure DNS resolution to ensure that all client computers can locate and access resources in adatum.net， adatum.com， and the Internet.   What should you do？（）A、Configure a secondary zone for adatum.com on Server1.B、Configure a primary zone for adatum.com on Server1.C、Configure conditional forwarding for adatum.com with the IP address of the DNS server at the ISP.D、Configure simple forwarding with the default settings with the IP address of the DNS server at the ISP.

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第4题

Your network consists of a single Active Directory domain. All servers run Windows Server 2003 Service Pack 2 （SP2）.The network contains two DNS servers named Server1 and Server2.  You deploy a DHCP server named Server3 and configure all client computers to receive their IP configurations automatically.You discover that all client computers use Server2 for host name resolution.You need to ensure that all client computers use Server1 for host name resolution.  What should you do？（）A、On Server3， modify the DNS option.B、On Server3， modify the DNS domain name option.C、On Server2， modify the Preferred DNS server setting.D、On each client computer， modify the properties of the DNS Client service.

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第5题

You are designing a DNS infrastructure to meet the Internet name resolution requirements. What should you do?（）A、Create a standard primary zone named “.” on all DNS servers.  B、Create an Active Directory-integrated zone named “.” on a DNS server on Los Angeles.  C、Configure all DNS servers to use forwarders. Specify the IP address of the DNS server at the local ISP.  D、Enable default root hints on all DNS servers.E、Disable recursion on all DNS servers. 

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第6题

Your company uses Active Directory-integrated DNS. Users require access to the Internet. You run a network capture. You notice the DNS server is sending DNS name resolution queries to a server named f.root-servers.net. You need to prevent the DNS server from sending queries to f.root-servers.net. The server must be able to resolve names for Internet hosts. Which two actions should you perform？（）A、Enable forwarding to your ISP¯s DNS serversB、Disable the root hints on the DNS server.C、Disable the netmask ordering option on the DNS server.D、Configure Reverse Lookup Zones for the IP subnets on the network.

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第7题

You are designing a DNS name resolution strategy to allow all users access to internal and external web sites.  What should you do？（）A、 Allow zone transfers to any DNS server.B、 Create a new stub zone for the DNS zone on the DNS server.C、 Configure the DNS server to forward all unanswered queries to a DNS server located at the ISPD、 Add the DNS server located at the ISP to the list of name servers for the fourthcoffee.com DNS zone

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