Connect that kind of high-speed wifi, preferably 1M or more, and if there are few people connected, and the owner of this computer rarely uses the network, it will not get stuck.

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1, DNS (Domain Name System) is a distributed database that maps domain names and IP addresses on the Internet, so that users can access the Internet more conveniently without having to remember the IP number string that can be directly read by the machine. The process of finally getting the IP address corresponding to the host name is called domain name resolution (or host name resolution). DNS protocol runs on top of UDP protocol, using port number 53. In the RFC document, RFC 2 18 1 has the specification of DNS, RFC 2 136 describes the dynamic update of DNS, and RFC 2308 describes the reverse cache of DNS queries.

2. Each IP address can have a host name, which consists of one or more strings separated by decimal points. With the host name, you don't have to memorize the IP address of each IP device, just remember the relatively intuitive and meaningful host name. This is the function of DNS protocol.