Https是以安全为目标Http通道，它通过在Http下加入（ ）来实现安全传输。
- A.SET协议
- B.SSL协议
- C.Socket接口
- D.NAT转换接口
正确答案及解析
正确答案
解析
本题考查Https基础知识。Https(Hypertext Transfer Protocol over Secure Socket Layer)，是以安全为目标Http通道，它提供了身份验证与加密通信方法，现在被广泛用于万维网上安全敏感信息通信，例如交易支付方面等。Https是在Http下加入SSL层来实现安全传输，因此Https安全基础是SSL。Https与Http默认端口不同，它使用443端口为默认端口。
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