图25.4全局域名FQDN和部分PQDN FQDN PQDN challenger.atc.fhda.edu. challenger.atc.fhda.edu cs.hmme.com. cs.hmme www.funny.int. WWW FQDN: fully qualified domain name PQDN:partially qualified domain name 25.725.7 图 25.4 全局域名FQDN和部分PQDN FQDN：fully qualified domain name PQDN: partially qualified domain name