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軟件設計師每日一練試題內(nèi)容（2021/10/31）

試題1：

設集合Z26{0,1,…,25｝， 乘法密碼的加密函數(shù)為Ek:Z26→Z26，Zki=(ki)mod 26，密鑰k∈Z26-{0)，則加密函數(shù)K7(i）=(7i)mod 26是一個（ ）函數(shù)。
A、單射但非滿射 
B、滿射但非單射 
C、非單射且非滿射 
D、雙射 

試題解析與討論：www.xomuzic.com/st/76592637.html
試題參考答案：D

試題2：

Networks can be interconnected by different devices in the physical layer networks can be connected by （1）or hubs .which just move the bits from one network to an identical network. One layer up we find bridges and switches which operate at data link layer. They can accept （2）examine the MAC address and forward the frames to a different network while doing minor protocol translation in the process in me network layer ,we have routers that can connect two networks, If two networks have （3） network layer, the router may be able to translate between the packer formats. In the transport layer we find transport gateway, which can interface between two transport connections Finally, in the application layer, application gateways translate message （4） .As an example, gateways between Internet e-mail and X.400 e-mail must （5） the e-mail message and change various header fields.
（1）A、reapers  
B、relays 
C、packages 
D、modems
（2）A、frimes 
B、packets 
C、packages 
D、cells
（3）A、special 
B、dependent 
C、similar 
D、dissimilar
（4）A、syntax 
B、semantics 
C、language 
D、format
（5）A、analyze 
B、parse 
C、delete 
D、create 

試題解析與討論：www.xomuzic.com/st/77142656.html
試題參考答案：A、A、D、B、B

試題3：

處理機主要由處理器、存儲器和總線組成，總線包括 （ ） 。
A、數(shù)據(jù)總線、地址總線、控制總線
B、并行總線、串行總線、邏輯總線
C、單工總線、雙工總線、外部總線
D、邏輯總線、物理總線、內(nèi)部總線

試題解析與討論：www.xomuzic.com/st/81522807.html
試題參考答案：A

試題4： 結構化分析的輸出不包括（ ）。
A.數(shù)據(jù)流圖
B.數(shù)據(jù)字典
C.加工邏輯
D.結構圖
試題解析與討論：www.xomuzic.com/st/4070529973.html
試題參考答案：D

試題5：

當用戶通過鍵盤或鼠標進入某應用系統(tǒng)時，通常最先獲得鍵盤或鼠標輸入信息的是（ ）程序。
A．命令解釋
B．中斷處理
C．用戶登錄
D．系統(tǒng)調(diào)用

試題解析與討論：www.xomuzic.com/st/2532720857.html
試題參考答案：B

試題6：

某企業(yè)由于外部市場環(huán)境和管理需求的變化對現(xiàn)有軟件系統(tǒng)提出新的需求，則對該軟件系統(tǒng)進行的維護屬于（）維護。
A．正確性
B．完善性
C．適應性
D．預防性

試題解析與討論：www.xomuzic.com/st/2475828343.html
試題參考答案：C

試題7： The project workbook is not so much a separate document as it is a structure imposed on the documents that the project will be producing anyway.
All the documents of the project need to be part of this （?。? This includes objectives ,external specifications , interface specifications , technical standards , internal specifications and administrative memoranda(備忘錄).
Technical prose is almost immortal. If one examines the genealogy ( Ff ) of a customer manual for a piece of hardware or software , one can trace not only the ideas , but also many of the very sentences and paragraphs back to the first （請作答此空） proposing the product or explaining the first design. For the technical writer, the paste-pot is as mighty as the pen.
Since this is so, and since tomorrow's product-quality manuals will grow from today’s memos, it is very important to get the structure of the documentation right. The early design of the project （ ） ensures that the documentation structure itself is crafted, not haphazard. Moreover, the establishment of a structure molds later writing into segments that fit into that structure.
The second reason for the project workbook is control of the distribution of （ ）. The problem is not to restrict information, but to ensure that relevant information gets to all the people who need it.
The first step is to number all memoranda, so that ordered lists of titles are available and h worker can see if he has what he wants. The organization of the workbook goes well beyond this to establish a tree-structure of memoranda. The （ ） allows distribution lists to be maintained by subtree, if that is desirable.
A.objective
B.memoranda
C.standard
D.specification
試題解析與討論：www.xomuzic.com/st/407629685.html
試題參考答案：B

試題8：

采用面向對象方法開發(fā)軟件的過程中，抽取和整理用戶需求并建立問題域精確模型的過程叫  （ ）  。
A、面向對象測試
B、面向對象實現(xiàn)
C、面向對象設計
D、面向對象分析

試題解析與討論：www.xomuzic.com/st/82752849.html
試題參考答案：D

試題9：

可用于數(shù)字簽名的算法是（） 。
A．RSA
B．IDEA
C．RC4
D．MD5

試題解析與討論：www.xomuzic.com/st/2861212886.html
試題參考答案：A

試題10：

以下4種路由中，  ( )  路由的子網(wǎng)掩碼是255.255.255.255 。
A．遠程網(wǎng)絡
B．靜態(tài)
C．默認
D．主機

試題解析與討論：www.xomuzic.com/st/2529817380.html
試題參考答案：D