The browser can't download anything from this hostname until the DNS lookup is completed.
浏览器不能下载任何从此主机名直到完成DNS查找。
Listing 6 shows the output during a Domain name Server (DNS) lookup for a hostname.
清单6显示了域名服务器(DNS)查找某个主机名期间的输出。
It typically takes 20-120 milliseconds for DNS to lookup the IP address for a given hostname.
它通常需要20 120毫秒的DNS查找为给定的主机名的IP地址。
Similarly a function is provided to do the reverse lookup - given an IP address, look up the corresponding hostname.
相类似的功能是反向查找——给出IP地址，查找相应的主机名。
Similarly a function is provided to do the reverse lookup - given an IP address, look up the corresponding hostname.
相类似的功能是反向查找——给出IP地址，查找相应的主机名。
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