軟件設(shè)計(jì)師當(dāng)天每日一練試題地址:m.xiexiliangjiufa.com/exam/ExamDay.aspx?t1=4
往期軟件設(shè)計(jì)師每日一練試題匯總:m.xiexiliangjiufa.com/class/27/e4_1.html
軟件設(shè)計(jì)師每日一練試題(2021/12/6)在線測(cè)試:m.xiexiliangjiufa.com/exam/ExamDay.aspx?t1=4&day=2021/12/6
點(diǎn)擊查看:更多軟件設(shè)計(jì)師習(xí)題與指導(dǎo)
軟件設(shè)計(jì)師每日一練試題內(nèi)容(2021/12/6)
試題
1:
就目前計(jì)算設(shè)備的計(jì)算能力而言,數(shù)據(jù)加密標(biāo)準(zhǔn)DES不能抵抗對(duì)密鑰的窮舉搜索攻擊,其原因是( )。
A、DES的算法是公開的
B、DES的密鑰較短
C、DES除了其中S盒是非線性變換外,其余變換均為線性變換
D、DES的算法簡(jiǎn)單
試題解析與討論:
m.xiexiliangjiufa.com/st/75952615.html試題參考答案:B
試題
2:
單向鏈表中往往含有一個(gè)頭結(jié)點(diǎn),該結(jié)點(diǎn)不存儲(chǔ)數(shù)據(jù)元素,一般令鏈表的頭指針指向該結(jié)點(diǎn),而該 結(jié)點(diǎn)指針 域的值為第 一個(gè)元素 結(jié)點(diǎn)的指 針,以下關(guān) 于單鏈表 頭結(jié)點(diǎn)的 敘述中,錯(cuò) 誤的是( )
A、若在頭結(jié)點(diǎn)中存入鏈表長(zhǎng)度值,則求鏈表長(zhǎng)度運(yùn)算的時(shí)間復(fù)雜度為 O(1)
B、在鏈表的任何一個(gè)元素前后進(jìn)行插入和刪除操作可用一致的方式進(jìn)行處理
C、加入頭結(jié)點(diǎn)后,代表鏈表的頭指針不因?yàn)殒湵淼目斩淖?
D、加入頭結(jié)點(diǎn)后,在鏈表中進(jìn)行查找運(yùn)算的時(shí)間復(fù)雜度為 O(1)
試題解析與討論:
m.xiexiliangjiufa.com/st/82552842.html試題參考答案:D
試題
3: 某用戶在使用校園網(wǎng)中的一臺(tái)計(jì)算機(jī)訪問某網(wǎng)站時(shí),發(fā)現(xiàn)使用域名不能訪問該網(wǎng)站,但是使用該網(wǎng)站的IP地址可以訪問該網(wǎng)站,造成該故障產(chǎn)生的原因有很多,其中不包括(69)。
A.該計(jì)算機(jī)設(shè)置的本地DNS服務(wù)器工作不正常
B.該計(jì)算機(jī)的DNS服務(wù)器設(shè)置錯(cuò)誤
C.該計(jì)算機(jī)與DNS服務(wù)器不在同一子網(wǎng)
D.本地DNS服務(wù)器網(wǎng)絡(luò)連接中斷
試題解析與討論:
m.xiexiliangjiufa.com/st/3807418087.html試題參考答案:C
試題
4:
部門、員工和項(xiàng)目的關(guān)系模式及它們之間的E-R圖如下所示,關(guān)系模式中帶實(shí)下劃線的屬性表示主鍵屬性,圖中:
部門(部門代碼,部門名稱,電話)
員工(員工代碼,姓名,部門代碼,聯(lián)系方式,薪資)
項(xiàng)目(項(xiàng)目編號(hào),項(xiàng)目名稱,承擔(dān)任務(wù))
若部門和員工關(guān)系進(jìn)行自然連接運(yùn)算,其結(jié)果集為(1)元關(guān)系。由于員工和項(xiàng)目關(guān)系之間的聯(lián)系類型為(2),所以員工和項(xiàng)目之間的聯(lián)系需要轉(zhuǎn)換成一個(gè)獨(dú)立的關(guān)系模式,該關(guān)系模式的主鍵是(3)。

(1)A.5
B.6
C.7
D.8
(2)A.1對(duì)1
B.1對(duì)多
C.多對(duì)1
D.多對(duì)多
(3)A.(項(xiàng)目名稱 員工代碼)
B.(項(xiàng)目編號(hào) 員工代碼)
C.(項(xiàng)目名稱 部門代碼)
D.(項(xiàng)目名稱 承擔(dān)任務(wù))
試題解析與討論:
m.xiexiliangjiufa.com/st/255015447.html試題參考答案:C、D、B
試題
5: 下列不能用于遠(yuǎn)程登陸或控制的是( )
A、IGMP
B、SSH
C、Telnet
D、RFB
試題解析與討論:
m.xiexiliangjiufa.com/st/4590717803.html試題參考答案:A
試題
6:
下圖是一個(gè)軟件項(xiàng)目的活動(dòng)圖,其中頂點(diǎn)表示項(xiàng)目里程碑,連接頂點(diǎn)的邊表示包含的活動(dòng),邊上的值表示完成活動(dòng)所需要的時(shí)間,則關(guān)鍵路徑長(zhǎng)度為()。

A.20
B.19
C.17
D.16
試題解析與討論:
m.xiexiliangjiufa.com/st/2468514807.html試題參考答案:A
試題
7: The development of the Semantic Web proceeds in steps, each step building a layer on top of another. The pragmatic justification for this approach is that it is easier to achieve (71) on small steps, whereas it is much harder to get everyone on board if too much is attempted. Usually there are several research groups moving in different directions; this (72) of ideas is a major driving force for scientific progress. However, from an engineering perspective there is a need to standardize. So, if most researchers agree on certain issues and disagree on others, it makes sense to fix the point of agreement. This way, even if the more ambitious research efforts should fai1, there wil1 be at least(73) positive outcomes.
Once a (74) has been established , many more groups and companies will adopt it, instead of waiting to see which of the alternative research lines will be successful in the end. The nature of the Semantic
Web is such that companies and single users must build tools, add content,and use that content. We cannot wait until the full Semantic Web vision materializes-it may take another ten years for it to be realized to its full(75) (as envisioned today, of course).
71.A. conflicts
B. consensus
C. success
D. disagreement
72.A. competition
B. agreement
C. cooperation
D. collaboration
73.A. total
B. complete
C. partial
D. entire
74.A. technology
B. standard
C. pattern
D. model
75.A. area
B. goal
C. object
D. extent
試題解析與討論:
m.xiexiliangjiufa.com/st/3956029197.html試題參考答案:B、A、C、B、C
試題
8: 給定學(xué)生關(guān)系S(學(xué)號(hào),姓名,學(xué)院名,電話,家庭住址)、課程關(guān)系C(課程號(hào),課程名,選修課程號(hào))、選課關(guān)系SC(學(xué)號(hào),課程號(hào),成績(jī))。查詢“張晉”選修了“市場(chǎng)營(yíng)銷”課程的學(xué)號(hào)、學(xué)生名、學(xué)院名、成績(jī)的關(guān)系代數(shù)表達(dá)式為:
π1,2,3,7(
π1,2,3(1) )∞(2) ))。
(1)A、σ2=張晉(S)
B、σ2='張晉'(S)
C、o2=張晉(SC)
D、o2='張晉'(SC)
(2)A、
π2,3(σ2='市場(chǎng)營(yíng)銷'(C))∞SC
B、
π2,3(σ2=市場(chǎng)營(yíng)銷(SC))∞C
C、
π1,2(σ2='市場(chǎng)營(yíng)銷'(C)∞SC
D、
π1,2(σ2=市場(chǎng)營(yíng)銷(SC))∞C
試題解析與討論:
m.xiexiliangjiufa.com/st/459417960.html試題參考答案:A、C
試題
9:
計(jì)算機(jī)數(shù)字音樂合成技術(shù)主要有(1)兩種方式,其中使用(2)合成的音樂,其音質(zhì)更好。
(1)A.FM和AM
B.AM和PM
C.FM和PM
D.FM和Wave Table
(2)A.FM
B.AM
C.PM
D.Wave Table
試題解析與討論:
m.xiexiliangjiufa.com/st/2474526989.html試題參考答案:D、D
試題
10:
計(jì)算機(jī)通過MIC(話筒接口)收到的信號(hào)是()。
A.音頻數(shù)字信號(hào)
B.音頻模擬信號(hào)
C.采樣信號(hào)
D.量化信號(hào)
試題解析與討論:
m.xiexiliangjiufa.com/st/246801799.html試題參考答案:B