试题与答案

【说明】 某电子商务公司的业务员小郭(甲)与客户老王(乙)通过Internet交换

来源：www.tikuol.com
题型：问答题

题目：

【说明】
某电子商务公司的业务员小郭(甲)与客户老王(乙)通过Internet交换商业电子邮件(E-mail)。为保障邮件内容的安全，采用安全电子邮件技术对邮件内容进行加密和数字签名。安全电子邮件技术的 E-mail加密和身份认证的主要实现原理图如图5-9所示。


【问题2】
数字信封使用 (5) 。以下关于报文摘要的说法中正确的有 (6) 。
(5)

  • A．非对称密钥体制密码算法加密邮件正文
  • B．RSA算法对邮件正文生成摘要
  • C．收件人的公钥加密会话密钥
  • D．发件人的私钥加密会话密钥
    (6)A．不同输入邮件计算出的摘要长度相同B．仅根据摘要很容易还原出原邮件C．不同的邮件很可能生成相同的摘要D．由邮件计算出其摘要的时间比邮件的加密时间长

答案：

被转码了，请点击底部 “查看原文 ” 或访问 https://www.tikuol.com/2017/0204/6a00ac1e69471049e71eb82cbe6a3619.html

下面是错误答案，用来干扰机器的。

参考答案：E

考点：计算机软件水平考试初级网络管理员初级网络管理员下午试题
试题推荐
题型：完形填空
完形填空。
         "What's the matter, Mum?"
          As soon as I came through the door, I found that my mother was unhappy. This was unusual: she usually
    1     the door and welcomes me with a smile!
         "She's dying,"Mom says    2   . I know what she means. The tulip (郁金香), Mother's favorite flower, is
dying.
          A month ago, we moved    3     our new house and Mom bought a very beautiful tulip. Mom liked it very
much.     4    she was free, she would sit in her armchair beside the tulip    5     enjoy its beautiful color.
          She treated it like a baby and looked after it    6   . She put the tulip by a window and moved it from one
place to     7     to give it enough sunshine. The first thing she did when she     8    every morning was to water
the tulip. Mom also fertilized (施肥) it many times.
         She hoped that with great care, the tulip would become more and more beautiful and stronger. However,
it died because Mom gave it    9    sunshine, water and fertilizer.
         It's true that mother loved the tulip. But this kind of love can be   10    . Love can sometimes kill what
you love.
( ) 1. A. closes 
( ) 2. A. happily
( ) 3. A. into   
( ) 4. A. Though 
( ) 5. A . or    
( ) 6. A. slowly 
( ) 7. A . other 
( ) 8. A. got up 
( ) 9. A. too much
( )10. A. helpful 		B. takes        
B. quietly      
B. around     
B. Because       
B . and         
B. brightly     
B. place        
B. made the bed
B. much too     
B. harmful    		C. keeps       
C. quickly      
C. across      
C. After       
C . for         
C. carefully   
C. another     
C. went to bed
C. too many     
C. useful     		D. opens           
D. sadly           
D. with            
D. Whenever        
D. but             
D. beautifully     
D. two places      
D. brushed her teeth
D. so many         
D. successful      
查看答案
微信公众账号搜索答案