高级软件工程试卷(2010秋)期末考试题

Advanced Software Engineering2010 Final Examination Paper(3 points each from 1 to 25)1,In order to deliver the system on time, the development team implemented a straightforward, brute force algorithm(蛮力算法) in the system. This algorithm is sufficient for the current needs But when the volume of business increases，it doesn’t meet the performance requirements. This situation would be an example of:a. An exceptionb. An errorc. A faultd. A failure2,One of the outside systems has defects in its own software, and sometimes sends data to your system in which some of the data are not in the correct format. When this occurs your system alerts the Administrators and none of the data from this outside system is updated.This situation would be an example of:a. An exceptionb. An errorc. A faultd. A failure3,Which are NOT valid choices and rationales according to V Model（one kind of Software Process Models）？es unit testing to verify program design;es integration testing to verify architectural (system) design;es system testing to validate the requirements;es acceptance testing to validate the requirements;4,The Manifesto for Agile Software Development:“We are uncovering better ways of developing software by doing it and helping others do it. Through this work we have come to value:●Individuals and interactions over processes and tools●Working software over comprehensive documentation●Customer collaboration over contract negotiation●Responding to change over following a planThat is, while there is value in the items on the right, we value the items on the left more.”Which are NOT valid choices and rationales according to the Manifesto for Agile Software Development?a.Emphasis on flexibility in producing software quickly and capably;b.If we choose Agile Software Development proccess,never need to write documents ;c.Concentrate on responding to change rather than on creating a plan and then following it;d.Develops software iteratively with a heavy emphasis on construction activities5,IBM Rational Unified Process® (RUP®) is a comprehensive process framework that provides industry-tested practices for software and systems delivery and implementation and for effective project management.Which are valid choices and rationales according to RUP?a.Views software development as manufacturing process rather than as creative processb.There is no iterative activities that lead to creating a final productc.Provides no guidance how to handle changes to products and activities during development (assumes requirements can be frozen)d.Driven by use case to develop Iteratively and continuously verify qualityTo build a schedule, the critical path method is used. The activity graph (shown below) is used to depict the dependencies among the activities and milestones of the project. The nodes of the graph represent the milestones of the project. The edges linking the nodes represent the activities. The numbers adjacent to the edges represent the number of days required for the activity. For example, it will take 5 days to complete the activity starting at milestone A and ending in milestone C. Use this activity graph to answer the following question 6 and 7:6.What is the length of the critical path from milestone A to milestone K?a. 28b. 32c. 33d. 377.What is the slack time for the activity starting at milestone F?a. 4b. 5c. 16d. 218,Jessica is a developer who like to try new technology. She often find new tools and technologies and use them in her work.When she try a new design tool, she would immediately have a positive idea on the tool, and trying to get other people to use this tool. Jessica's work style can be described as:a.Intuitive(感性) Introvert（内向）b.Rational (理性) Introvertc.Intuitive Extrovert（外向）d.Rational Extrovert9,Which is NOT a Mean of Eliciting Requirements below?a.Implement some components according to Requirementsb.Learn from users about user's task in more detailsc.Interviewing user or stakeholders in groupsd.Observing the current system (if one exists)10,The customer wishes that the development team could choose Agile Method to implement their software.The customer's wish can be described as:a.Functional requirementb.Nonfunctional requirementc.Design constraintd.Process constraint11,Which is NOT the way to help make requirements testable below ?a.Specify a quantitave description for each adverb and adjectiveb.Write test cases for requirementsc.Replace pronouns with specific names of entitiesd.Make sure that every noun is defined in exaclty one place in the requirements documents12,Which is NOT valid choice and rationale about Two Kinds of Requirements Documents?a.Requirements definition is a complete listing of everything the customer wants to achieveb.Requirements specification show us how the proposed system shall behavec.Requirements definition describes the entities in the environment where the system will be installedd.Requirements specification show us how the proposed system shall be constructed13,Which are valid choices and rationales about Prototyping Method?①Good for answering questions about the user interfaces②To elicit the details of proposed system③To solicit feedback from potential users about what aspects they would like to see improve④To solicit feedback from potential users about which features are not so useful⑤To solicit feedback from potential users about what functionality is missing⑥Determine whether the customer's problem has a feasible solution⑦Assist in exploring options for otimizing quality requirements⑧Some design decisions are best answered by prototypinga.only ①b.①②③④⑤⑥⑦⑧c.①②③④⑤d.①⑧14,Which is NOT valid choice and rationale about some common types of architectural views? a.The decomposition view portrays the system as programmable units,this view is likely to be hierarchicalb.The dependencies view shows dependencies among software units,This view is useful in project planning,Also useful for assessing the impact of making a design change to some software unitc.The implementation view shows the runtime structure of a system in terms of its components and connectorsd.The deployment view maps runtime entities, such as components and connectors, onto computer resources, such as processors, data stores, and communication networks15,Which belongs to Publish-Subscribe Architectural Style?a.Observer Patternb.Strategy Patternc.PPLive Streaming Media Systemd.Expert System16,Which is NOT valid choice and rationale about Coupling?a.Two or more components share the same global variables,that is Common Couplingb.When one module passes parameters or a return code to control the behavior of another module,that is Control Couplingc.when complex data structures are passed between modules,that is Stamp couplingd.when only data values are passed between modules,that is Stamp coupling17,Which is NOT valid choice and rationale about the figure(Meta-model of OO constructs) below?a.The interface is a kind of type definition,so it doesn't need memory in run-time,but it usaully appears in header files.b.The object is the run-time structure of an OO system,so it need memory to store its information in run-time,and it is as an independent component in source files.c.The class is code module,so it doesn't need memory in run-time,but it usaully appears in source files.An object's implementation details are encpsulated in its class definition.d.The instance variable is program variable whose value is reference/pointer to object,so it need memory in run-time.18,Which is NOT valid choice and rationale about Views of the Test Objects?a.black box means that you only see outside functionality of the test objectsb.white box means that you can see the internal structure of the test objectsc.black box view allows you to design test cases which can test all pathes in the software unit.d.white box view allows you to design test cases which can test all branches in the software unit.19,The figure below is the system viewed as a hierarchy of components.How many test drivers and test stubs to write in Bing-Bang Integration Testing?a.6 test drivers and 6 test stubsb.6 test drivers and 3 test stubsc.8 test drivers and 0 test stubsd.0 test drivers and 8 test stubs20,Which is NOT valid choice and rationale about Configuration Management?a.Y ou decide the specific date to publish your product to market.b.Y ou use V ersions and Releases to control of system differencesc.Y ou maintain production system and development system in incremental and iterative developmentd.Y ou choose Subversion version control system to control of source code changes21,Which is NOT valid choice and rationale about Reliability, A vailability, and Maintainability?a.Software reliability: operating without failure at a given point in timeb.Software availability: is the probability of operating successfully by user.c.Software availability: operating successfully according to specification at a given point in timed.Software maintainability: for a given condition of use, a maintenance activity can be carried out within stated time interval, procedures and resources22,Which is NOT valid choice and rationale about Acceptance Tests?a.In a banchmark test,the customer prepares a set of test cases that represent typical conditions under which the system will operate when actually installed.b.We test a system before the customer runs the real pilot test and within our own company,that is alpha test.c.Alpha test is called in-house test,that is Developer V erify Test(DVT) too.d.Beta test is the customer's pilot outside of company.23,There is a typical Library system including borrowing a book, returning a borrowed book, and paying a library fine etc.What is its system type according to Lehman’s System Types?a.S-system: formally defined, derivable from a specificationb.P-system: requirements based on approximate solution to a problem, but real-world remains stablec.E-system: embedded in the real world and changes as the world doesd.None of them24, The figure below is a Graph of failure data,What do you got from the graph?a.I can predict when next failure will happenb.I know of the Reliability is growingc. Mean time to repair is shorter and shorterd. Mean time between failures is shorter and shorter25, Which is NOT valid choice and rationale about Programming Guidelin es?a. write some comments in source files to make the code easy to readb. write the program from design modular blocks,and comment the differences between themc. localize input and output in every module.d. pseudocode(伪代码) can help us find Syntax Faults.26,Most problems are very complicated,large and sometimes tricky to handle ,especially if they represent something new that has never been solved before.Could you give a roadmap to solving problems? The key words may be used in your answer,include Analyzing，Synthesis，Method，Tool，Procedure，Paradigm，Layering，System Approach and Abstraction etc.(5 points)27,Please take Use Cases Modeling Notation to describe a typical Library system including borrowing a book, returning a borrowed book, and paying a library fine etc. (5 points)28,If you design the Library system above,you may choose Decomposition view (Functional decomposition and Data-oriented decomposition),Execution view and Implementation view,use these views,you can describe your solution for the Library system,which will give us the overview of how the system solution will works,as well as the guide to create the database tables and sourcefiles.Please describe your solution for the Library system. (10 points)29,One Specialist is pessimistic(悲观的) and even skeptic to your solution of the Library system, How do you convince(说服) him？and what will be prepared in advance?Figure below:Evidence required for different auiences. (5 points)参考答案：1-5 dacbd 6-10 abcad 11-15 bdbca 16-20 dbcaa 21-25 accbd 26，能够利用“分析”和“综合”简述解决问题的一般过程2分能知道使用“分层”“抽象”“系统化（划分子系统、系统间关系）”等概念来简化复杂问题2分问题解决的过程中知道要用一些Method，Tool，Procedure 1分27，必须要有用例图，无用例图描述需求最多得1分28，图文并茂的方法来描述设计方案，其中应该有模块分解图、划分数据表、执行视图、实现视图等（各1分），整体表达能力6分酌情给分。