题目
题目
单项选择题

Blank ______factor authentication is the traditional security process, which requires a user name and password.

选项
A.Three
B.Multi
C.Two
D.Single
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标准答案
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思路分析
The question presents a fill-in-the-blank about authentication type and lists four options to complete the sentence. Option 1: 'Three' — This would imply three factors are used. That contradicts the statement that the traditional process requires a user name and password, which is not three factors but typically two pieces of knowledge-based information. Thus......Login to view full explanation

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