TCP协议
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dns什么时候用tcp
DNS客户端和服务器之间需要可靠传输时，或在网络环境复杂、安全性要求高的情况下
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tcp协议dns端口号
P协议中DNS查询的默认端口号是53，而DNS响应使用相同的端口号返回
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dns协议采用了tcp协议
S协议采用了TCP协议进行数据传输，以确保数据的
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dns 传输协议
DNS 传输协议主要使用 UDP，端口号为53，也可用TCP（端口号也是53）。
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如何理解DNS与TCP协议在网络通信中的作用与关系？
DNS over TCP is a communication protocol used for resolving domain names to IP addresses. Unlike DNS over UDP, which is commonly used for small queries and responses, DNS over TCP is employed for larger amounts of data, such as zone transfers or when the response data exceeds the size limit of UDP packets. It provides a more reliable transmission but can be slower due to its connectionoriented nature.
