全國(guó)計(jì)算機(jī)等級(jí)考試四級(jí)軟件測(cè)試工程師筆試試題weng-資料下載頁(yè)
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【正文】 NOT served by building a prototype? _____. A) It takes the place of the final system. B) It assists in gathering software requirements C) It assists in estimating the cost of the project. D) It is used as the foundation of the larger projects. (79)Software document is an important part of software and a basis of software development also influnces software’s _____.(2 Points) A) Reusability B) Maintanence C) Expansibility D) Portability (80) Which phase of the software development requires the most development time? _____. A) the design phase B) the testing phase C) the maintenance phase D) the development phase (81) Which of the following statements is correct?_____. (2 Points) A)The definition phase results in the Software Requirements Specification. B)Testing is optional in software life cycle. C)CASE tools can only aid in the design phase of a software life cycle. D)A change during a later phase does not require the documentation of all earlierphases to be updated. (82)Blackbox and whitebox testing method are often used in software testing phase,in which,the whitebox is mainly used to test software39。s_____. A)reasonableness of structure B)correctness of a program C)external function of a program D)internal logic of a program (83) How does Booth39。s Algorithm improve binary multiplication?_____. A) It prevents overflow. B) It prevents underflow. C) It preserves the sign of the multiplication operation. D) It enhances the speed of the operation significantly. (84) A cache has 64 blocks。 each block is 16 block does byte 1200 map to ?_____. A) 25 B) 60 C) 75 D)100 (85) Which is NOT a characteristic of an RISC processor?_____. A) a high clock speed B) a highly optimized pipeline C) a few generalpurpose registers D) a limited amount of small instructions (86)You are performing two sums: the first is a sum of two scalar variables and the second is a matrix sum of a pair of twodimensional arrayssize 1000 by 1000. What speedup is achieved when the calculations are performed on size 1000 processors? _____.(2 Points) A) 50 B) 100 C) 999 D) none of the above (87)According to Shannon39。s equation,what is the channel capacity of an analog voicegrade phone line with a bandwidth of 3100 Hz and a signaltonoise ratio or 30dB?_____.(2 Points) A) Kbps B) Kbps C) Kbps D) Kbps (88)The standard specifies three layers of functionality. Which layers of the OSI model correspond to the layers?_____. A) th e Physical,Network,and Session Layers B) the Physical,Data Link,and Network Layers C) the Physical,Data Link,and Transport Layers D) the Physical,Session,and Presentation layers (89)Which routing algorithm is described below?It is a mechanism in which the setding station determines the route the frame will follow and includes the routing information with the frame。 bridges read the routing information to determine if they should forward the . A) Fixed Routing B) Spanning Tree C) Source Routing D) Frame Forwarding (90) Which OSI layer does a bridge operate at?_____. A) the Physical Layer B) the Network Layer C) the Transport Layer D) the Data Link Layer二、論述題(兩個(gè)論述題可任選其一，并只選其一，多選無(wú)效，滿分30分) 論述題 1 在計(jì)算機(jī)指令集的設(shè)計(jì)與實(shí)現(xiàn)過程中，出現(xiàn)了兩種對(duì)立的技術(shù)路線或風(fēng)格，即CISC 與RISC. (1) 指出 CISC 的主要弊病.(8分) (2) 概述 RISC 技術(shù)的基本要點(diǎn).(12分) (3) Intel X86 系列屬于哪一種風(fēng)格,當(dāng)前它采用的是怎樣的技術(shù)路線.(10分) 論述題 2 人們?cè)诠芾韺?shí)踐中發(fā)現(xiàn),數(shù)據(jù)庫(kù)技術(shù)是信息資源的整理、保存、 管理和使用的最有效的手段。數(shù)據(jù)庫(kù)按其數(shù)據(jù)結(jié)構(gòu)模型分類，通常可分為層次型數(shù)據(jù)庫(kù)、網(wǎng)絡(luò)型數(shù)據(jù)庫(kù)、關(guān)系型數(shù)據(jù)庫(kù)和面向?qū)ο笮蛿?shù)據(jù)庫(kù)，各種類型的數(shù)據(jù)模型都有自身的特點(diǎn)。試從關(guān)系數(shù)據(jù)模型的優(yōu)點(diǎn)和弱點(diǎn)論述： (1)為什么人們?cè)陂_發(fā)以事務(wù)處理為主的信息系統(tǒng)(例如管理信息系統(tǒng))時(shí)， 大多選用關(guān)系型數(shù)據(jù)庫(kù)作為開發(fā)環(huán)境？(18分) (2)在許多含有復(fù)雜數(shù)據(jù)結(jié)構(gòu)或豐富語(yǔ)義的實(shí)際應(yīng)用領(lǐng)域中， 為什么要選用面向?qū)ο髷?shù)據(jù)庫(kù)或要對(duì)關(guān)系型數(shù)據(jù)庫(kù)作某些擴(kuò)充和修改？(12分)共分15頁(yè)，當(dāng)前頁(yè)是第15頁(yè)
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