● 信息安全的基本要素包括真實(shí)性、機(jī)密性、不可抵賴(lài)性、可審査性等方面。建立有效的責(zé)任機(jī)制，防止用戶(hù)否認(rèn)其行為屬于（  ）。

（21）A．真實(shí)性

B.機(jī)密性

C.不可抵賴(lài)性

D.可審査性

● 假設(shè)某高校信息統(tǒng)一管理平臺(tái)的使用人員分為學(xué)生、教師和行政管理人員3類(lèi).那么用戶(hù)權(quán)限管理的策略適合采用（  ）。

（22）A．建立用戶(hù)角色井授叔

B.對(duì)關(guān)系進(jìn)行分解,每類(lèi)人員對(duì)應(yīng)一組關(guān)系

C.建立每類(lèi)人員的視圖井授權(quán)給每個(gè)人

D.針對(duì)所有人員建立用戶(hù)名井授權(quán)

● 軟件著作權(quán)的保護(hù)對(duì)象不包括（  ）。

（23）A．源程序

B.目標(biāo)程序

C.流程圖

D.算法思想

● 某公司員工趙忻是一名軟件設(shè)計(jì)師，按公司規(guī)定編寫(xiě)軟件文檔需要上交公司存檔。這些軟件文檔屬于職務(wù)作品，（  ）。

（24）A．A,其著作權(quán)由公司享有

B.其著作權(quán)由軟件設(shè)計(jì)師享有

C.除其署名權(quán)以外,著作權(quán)的其它權(quán)利由軟件設(shè)計(jì)師享有

D.其著作權(quán)由公司和軟件設(shè)計(jì)師共同享有

● 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體系結(jié)構(gòu)中，將IP地址轉(zhuǎn)化為MAC地址的協(xié)議是(   ) 。

（30）A． RARP

B. ARP

C. ICMP

D. TCP

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