问题 问答题

试题四 阅读下列说明,回答问题。 【说明】 某企业最近上线了ERP系统,该系统运行的网络环境如图所示。企业信息中心目前拟对该系统相关安全防护体系进行全面的安全性测试,以提供全面的安全测评报告。

企业ERP系统上线后,企业主要业务的日常运作都高度依赖该系统的正常运行,因此ERP系统的稳定性与可靠性对企业至关重要。故障恢复与容灾备份措施是提高系统稳定性与可靠性的重要因素。对于故障恢复与容灾备份措施,参与测试的王工认为应从故障恢复、数据备份和容灾备份等三个方面进行测试。请用300字以内文字,对这三方面的测试内容进行简要说明。

答案

参考答案:

对于故障恢复与容灾备份措施,应从以下三个方面进行测试: ①故障恢复:测试整个ERP系统是否存在单点故障;任何一台设备失效时,能否按照预定义的规则实现快速切换;是否采用磁盘镜像技术,实现主机系统到磁盘系统的高速连接。 ②数据备份:ERP系统关键业务是否具备必要的双机热备或磁盘镜像等热备份机制;对于整个ERP业务,是否提供外部存储器备份和恢复机制,保证系统能够根据备份策略恢复到指定时间的状态。 ③容灾备份:ERP系统是否建立异地容灾备份中心,当主中心发生灾难性事件时,可由备份中心接管所有业务;备份中心是否有足够的带宽确保与主中心的数据同步,是否有足够处理能力来接管主中心的业务,能否确保快速可靠地与主中心的应用切换。

解析:

本问题考查故障恢复与容灾备份措施测试内容。 针对故障恢复与容灾备份措施的安全性测试一般包括故障恢复、数据备份与容灾备份三个测试点,其包含的基本测试内容为: ①故障恢复:整个系统是否存在单点故障;对于关键应用系统,当任何一台设备失效时,能否按照预定义的规则实现快速切换;是否采用磁盘镜像技术,实现主机系统到磁盘系统的高速连接; ②数据备份:对于关键业务,是否具备必要的双机热备或磁盘镜像等热备份机制;对于所有业务,是否提供外部存储器备份和恢复机制,保证系统能够根据备份策略恢复到指定时间的状态; ③容灾备份:是否建立异地容灾备份中心,当主中心发生灾难性事件时,可由备份中心接管所有业务;备份中心是否有足够的带宽确保与主中心的数据同步,是否有足够处理能力来接管主中心的业务,能否确保快速可靠地与主中心的应用切换。

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     A girl complained to her father about her hard life. She wanted to   1   because she didn't know what she
had to do. She felt   2   of fighting and fighting. When one   3   had been solved, another just came.
     Her father, a cook, took her into the kitchen. He   4   water into three pans. After boiling, in the first pan 
  5   some carrots, the second some eggs and the last was put with coffee. He waited without any   6   from
his mouth.
     The girl closed her mouth and waited,   7   by what her father did. After about twenty minutes, her father 
  8   the stove and took out the carrots and the eggs. After that the coffee was poured into the cup.
     Turning back to her daughter, he asked,"What do you   9  ?"
     "Carrots, eggs, and coffee," she answered.
     Her father suggested her  10  the carrots. She did and felt the carrots were  11 . Then he asked her to take
the eggs and break them. After  12  them, she got the eggs, cooked and hard.  13 , he asked her to smell the
coffee. She asked  14 , "What's the meaning on earth, father?" He explained that  15  had experienced the same
unfortunate-the boiling water, but made  16  responses. The strong and hard carrots became soft and weak after
in the  17  water. The fragile eggs became hard after cooked. Coffee was very unique, but it could  18   water.
     "  19  are you?" asked her father,"When the suffering knocks at your door, how is your   20  ? Are you
carrots, eggs, or coffee?"
(      )1. A. catch up   
(      )2. A. tired       
(      )3. A. matter     
(      )4. A. made       
(      )5. A. was added   
(      )6. A. breath     
(      )7. A. judged     
(      )8. A. turned off 
(      )9. A. mean       
(      )10. A. touching   
(      )11. A. bad       
(      )12. A. hitting   
(      )13. A. Besides   
(      )14. A. impatiently
(      )15. A. nothing   
(      )16. A. different 
(      )17. A. cold       
(      )18. A. influence 
(      )19. A. Who       
(      )20. A. feeling   

B. wear out    
B. thrilled    
B. business    
B. poured      
B. were put    
B. praises    
B. frightened  
B. turned up  
B. see        
B. eat        
B. hard        
B. peeling    
B. Thus        
B. shyly      
B. anything    
B. certain    
B. boiled      
B. spoil      
B. Which      
B. replacement 

C. give up               
C. confident       
C. puzzle               
C. put           
C. remained             
C. words             
C. disappointed   
C. turned down             
C. suggest       
C. to observe             
C. soft           
C. beating           
C. Still           
C. regretfully         
C. each thing       
C. more                     
C. boiling     
C. improve                 
C. What           
C. refusal       
D. run out                                 
D. promising                   
D. problem                               
D. turned                
D. increased                           
D. complaints                    
D. confused                    
D. turned away                                       
D. explain                 
D. kept                                    
D. gentle              
D. destroying                          
D. Lastly                  
D. bravely                             
D. something                   
D. unequal                                       
D. changeable          
D. change                                      
D. How               
D. reaction                      
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