Learning immediately: https://edu.csdn.net/course/play/10615/237083?utm_source=blogtoedu
The browser program need to first DNS server requests a public IP
Study notes (07): - a network structure "Computer Network Architecture Part 1,2" of, the IP packet switching technology, IP / MAC mapping, the NAT conversion, etc. - cards, routers ... 4
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Origin blog.csdn.net/Brief_J/article/details/104246706
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