电子商务安全体系中不包括（ ）。
- A.交易协议层
- B.网络服务层
- C.信息发布与传输层
- D.加密技术层
正确答案及解析
正确答案
解析
本题考查电子商务安全体系。
电子商务安全体系从高到低依次为应用系统层、安全协议层（即交易协议层）、安全认证层、加密技术层、网络服务层。故A、B、D选项都属于电子商务安全体系。
C选项信息发布与传输层不属于电子商务安全体系，属于电子商务基本架构。故本题选C。（电子商务基本架构包括：网络层、信息发布与传输层、电子商务服务与应用层、公共政策与法律规范、技术标准和网络协议）
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