● 信息安全的基本要素包括真实性、机密性、不可抵赖性、可审査性等方面。建立有效的责任机制，防止用户否认其行为属于（  ）。

（21）A．真实性

B.机密性

C.不可抵赖性

D.可审査性
 

● 假设某高校信息統一管理平台的使用人员分为学生、教师和行政管理人员3类.那么用户权限管理的策略适合采用（  ）。

（22）A．建立用户角色井授叔

B.对关系进行分解,每类人员对应一组关系

C.建立每类人员的视图井授权给每个人

D.针对所有人员建立用户名井授权

● 软件著作权的保护对象不包括（  ）。

（23）A．源程序

B.目标程序

C.流程图

D.算法思想
 

● 某公司员工赵忻是一名软件设计师，按公司规定编写软件文档需要上交公司存档。这些软件文档属于职务作品，（  ）。

（24）A．A,其著作权由公司享有

B.其著作权由软件设计师享有

C.除其署名权以外,著作权的其它权利由软件设计师享有

D.其著作权由公司和软件设计师共同享有
 

● Because the Internet（  ） computers all over the world, any business that engages in electronic commerce instantly becomes an international business. One of the key issues that any company faces when it conducts international commerce is trust.

It is important for all businesses to establish（  ）relationships with their customers.Companies with established reputations in the physical world often create trust by ensuring that customers know who they are. These businesses can rely on their（  ）brand names to create trust on the Web. New companics that want to establish online businesses face a more diffcult（  ）_ because a kind of anonymity(匿名) exists for companies trying to establish a Web presence.

Because Web site visitors will not become customers unless they trust the company behind the site, a plan for establishing（  ） is essential. Customers' inherent lack of trust in“strangers" on the Web is logical and to be expected; sellers on the Web cannot assume thatvisitors will know that the site is operated by a tnustworthy business.

（25）A． establishes

B. includes

C. engages

D. connects

（26）A． accepting

B. trusting

C. believing

D. real

（27）A． own

B. registered

C. established

D. online

（28）A． debate

B. problem

C. way

D. challenge

（29）A． credibility

B. infrastructure

C. quality

D. capability
 

● 在TCP/IP体系结构中，将IP地址转化为MAC地址的协议是(   ) 。

（30）A． RARP

B. ARP

C. ICMP

D. TCP