第8题: [单项选择]What does the woman suggest to the man A. He bought it already. B. He has finished reading it. C. He thought it was interesting. 参考答案:B 答案解析:[听力原文] W: I thought you were going to read this book today. M: Oh, but I already have.
第16题: [单项选择]下列关于IPSec的描述中,错误的是( )。 A. Kerberos是为Novell网络设计的 B. 用户须拥有数字证书 C. 加密算法使用RSA D. Kerberos提供会话密钥 参考答案:D 答案解析:[解析] Kerberos由麻省理工学院开发,一般采用DES体制,但也可以采用其他的对称密钥体制,可以产生会话密钥。