The name server checks its database and cache, doesn't find anything, and sends an iterative request to a root server for the .com top-level domain.

该名称服务器检查其数据库和缓存，没有找到任何结果，于是向.com 顶级域的根服务器发送一个迭代请求。

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Domain name root server refers to the server that bear the function of root nodes in the domain name system.

域名根服务器：是指承担域名体系中根节点功能的服务器。

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Domain name root server refers to the server that bear the function of root nodes in the domain name system.

域名根服务器：是指承担域名体系中根节点功能的服务器。

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