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以下说法中对协议描述不正确的是？(单选题) #692

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lgwebdream opened this issue Jul 6, 2020 · 1 comment

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会小二网络&安全

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lgwebdream commented Jul 6, 2020

A.HTTP 协议是在 TCP/IP 协议之上的应用层协议
B.HTTP 1.1 缺省支持 keep-alive
C.WebSocket 是由 Socket 发展而来的新规范
D.WebSocket 可以建立持久连接

lgwebdream added 会小二网络&安全 labels

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lgwebdream commented Jul 6, 2020

扫描下方二维码，获取答案以及详细解析，同时可解锁800+道前端面试题。

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