属于IEEE802．11的用户认证机制有：（）。 A: Open authentication B: Pre－Shared Key authentication C: Shared Key authentication D: MAC authenticatio

You need to recommend a security strategy for WebApp2 that meets the company’s applicaton  requirements.What should you include in the recommendation？（） A: Basic authentication and connection security rules B: Basic authentication and SSL C: Digest authentication and connection security rules D: Digest authentication and SSL

两台路由器间通过串口相连,且串口链路使用PPP协议封装,则下列哪些参数是该PPP链路UP前必须 A: 的?(多选) B: MRU C: Authentication Password D: Magic-Number E: Authentication Protocol

What problems need to be solved to establish a system of network community management? A: Identity authentication B: Authentication matching C: Free forum D: Professional consulting and payment

Radius（Remote Authentication Dial In User Service）即 服务

中国大学MOOC: Please tell us ­­­­­­­­­­­­­­­________________ thegoods will be transshipped.

下面程序段运行结果是____。 A: B: &˽&˽&* C: D: ˽&˽&˽&˽* E: F: &&&* G: H: ＆˽*˽˽

以下运算符优先级排列正确的是（ ） A: *= &&！= % B: *= % &&！= C: %！= && *= D: &&！= % *=

若图中直线，，的斜率分别为，，，则(　　) A: $amp;$amp; B: $amp;$amp; C: $amp;$amp; D: $amp;$amp;

\(A\)同上题,将其对角化\(A=S\Lambda S^{-1}\)的方阵\(S\)可以是 A: \(\begin{pmatrix} 1 & 1 & 1 & 1 \\ 1 & 1 & 1 & 0 \\ 1 & 1 & 0 & 0 \\ 1 & 0 & 0 & 0 \end{pmatrix}\) B: \(\begin{pmatrix} 1 & 0 & 0 & 0 \\ 0 & 0 & 1 & 0 \\ 0 & 1 & 0 & 0 \\ 0 & 0 & 0 & 1 \end{pmatrix}\) C: \(\begin{pmatrix} 1 & 0 & 0 & -1 \\ 0 & 1 & -1 & 0 \\ 0 & 1 & 1 & 0 \\ 1 & 0 & 0 & 1 \end{pmatrix}\)