固定循环指由（）组成。 ["数据格式代码和返回点代码","数据格式代码和加工方式代码","数据格式代码和返回点代码、加工方式代码","任意四位代码"]
线性密码分析方法本质上是一种（）的攻击方法 ["唯密文攻击","已知明文攻击","选择明文攻击","选择密文攻击"]
You install a third-party application on your computer. The application uses port 80 to negotiate a listening port. After establishing the listening port， the application uses dynamic ports above 6000. You need to configure Microsoft Windows Firewall to allow traffic for the application. What should you do？ （） ["Add a port exception for port 80.","Disable the Core Networking exception.","Restore the Windows Firewall defaults.","Add a program exception for the new application."]
Within the web application deployment descriptor， which defines a valid JNDI environment entry（） ["A","B","C","D"]
《石头记索隐》的作者是（） ["曹雪芹","蔡元培","王梦阮","刘心武"]
统一授信制度
