Windows server 2003--------------- DNS

: DNS?DNSDNSDNS

InternetInternetIANAIP(IDID)IPIP()IP

host

FQDN server1.teach.microsoft.com.comneteduCNteachmicrosoftserver1

(CNNIC)CN http://www.cnnic.net.cn CNNIC. www.net.cn

www.sohu.comDNSADSLIPDNSDNSIPIPDNSIPDNS

DNS1.DNS computer DNS mail1.nwtraders.com

192.168.42.40

2.

DNS(.)DNS.comDNSSohu.comDNSsohu.comDNSMail.sohu.comMail.sohu.com.comDNS172.161.0.7

13DNS

IP 13 IP a m13

13 13 a.rootservers.net b.rootservers.net m.rootservers.net 2006 DNS

f IP IP 40

DNSDNS DNSDNS DHCP DHCPDNS DHCPDNSIP DNS

DNS ---/Windows------ --------- 13DNSIPDNS

DNSDNSDNS :sohu.com, microsoft.com

DNS 1.DNS 2.IP() DNS

1. IP (1) --- : , DNS : : ,,

DNSDNSA.comA.comDNS

(2)sohu.com---webserver---1.1.1.1webserver.sohu.com?ping webserver.sohu.com(3):www.sohu.comwebserver.sohu.comIP : ping www.sohu.com

2. IP (1) 192.168.1 (2) 4-----win2003.sohu.com : nslookup:DNS nslookup DNSIPDNSDNS >www.sohu.com

(3)IPID

DNSDNS-----194.21.32.4DNSDNS ----sohu.com---DNS

DNSLocal host nameEnter commandDNS ServerHost files

Hosts C:\windows\system32\drivers\etcIPHosts