URLs have three parts:the DNS name of machine on which the page is located,then
URLs have three parts：the DNS name of machine on which the page is located，then a local name uniquely indicating the specific page and
A．Protocol
B．IP address
C．Network name
D．Server name
正确答案：A
词条内容仅供参考，如果您需要解决具体问题
（尤其在法律、医学等领域），建议您咨询相关领域专业人士。