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Data Model表示（）

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第1题：

System analysis is traditionally done top-down using structured analysis based on（）. Object-oriented analysis focuses on creation of models. The three types of theanalysis model are（）. There are two substages of object-oriented analysis.（）focuses on real-world things whose semantics the application captures. The object constructedin the requirement analysis shows the（）of the real-world system and organizes it intoworkable pieces.（）addresses the computer aspects of the application that are visible tousers. The objects are those which can be expected to vary from time to time quite rapidly.

A.functional decomposition B.object abstraction C.data inheritance D.information generalization A.function model，class model and state model B.class model，interaction model and state model C.class model，interaction model and sequence model D.function model，interaction model and state model A.Static analysis B.Semantic analysis C.Scope analysis D.Domain analysis A.static structure B.system components C.data flows D.program procedures A.Program analysis B.Function requirement C.Application analysis D.Physical model

正确答案：A,B,D,A,C

第2题：

● System analysis is traditionally done top-down using structured analysis based on （71）. Object-oriented analysis focuses on creation of models. The three types of theanalysis model are （72）. There are two substages of object-oriented analysis. （73） focuses on real-world things whose semantics the application captures. The object constructedin the requirement analysis shows the （74） of the real-world system and organizes it intoworkable pieces.（75）addresses the computer aspects of the application that are visible tousers. The objects are those which can be expected to vary from time to time quite rapidly.

（71）

A. functional decomposition

B. object abstraction

C. data inheritance

D. information generalization

（72）

A. function model，class model and state model

B. class model，interaction model and state model

C. class model，interaction model and sequence model

D. function model，interaction model and state model

（73）

A. Static analysis

B. Semantic analysis

C. Scope analysis

D. Domain analysis

（74）

A. static structure

B. system components

C. data flows

D. program procedures

（75）

A. Program analysis

B. Function requirement

C. Application analysis

D. Physical model

正确答案：A,B,D,A,C
参考译文
传统的系统分析以功能分解为基础，利用结构化分析自顶向下完成。面向对象分析关注于模型的创建。该分析模型有三种类型：类模型、交互模型和状态模型。面向对象分析有两个子阶段。领域分析侧重于现实世界中那些语义被应用程序获取的事物。在需求分析中所构造的对象说明了现实世界系统的静态结构并将其组织为可用的片段。应用分析处理应用系统中用户可见的计算机问题。所分析的对象可能会被预计时不时地发生较快的变化。
参考答案
（71）A （72）B（73）D（74）A（75）C

第3题：

●Which is the second layer from the bottom in Open System Interconnection Reference Model? (71)．

(71) A. Application

B.Data link

C.Network

D.Session

正确答案：B

第4题：

Which three of the following OSI model layers also belong to the TCP／IP model?()

A. The application layer

B. The session layer

C. The data link layer

D. The transport layer

E. The network interface layer

F. The physical layer

参考答案：A, D, E

第5题：

Which of the following OSI model layers is used for logical addressing?()

A. Physical

B. Transport

C. Network

D. Data link

参考答案：C

第6题：

Is a programming model and an associated implementation for processing and generating big data sets with a parallel, distributed algorithm on a cluster.The model is a specialization of the split-apply-combine strategy for data analysis().

A.HDFS

B.Chukwa

C.MapReduce

D.HBase

正确答案：C

第7题：

Which layer of the OSI reference model is responsible for ensuring reliable end-to-end delivery of data?

A. Application

B. Presentation

C. Session

D. Transport

E. Network

F. Data-Link

正确答案：D
D 解析：Explanation:
A key function of the transport layer is to provide connection services for the protocols and applications that run at the levels above it. These can be categorized as either connection-oriented services or connectionless services. Some protocol suites, such as TCP/IP, provide both a connection-oriented and a connectionless transport layer protocol, to suit the needs of different applications.

The transport layer is also the place in the layer stack where functions are normally included to add features to end-to-end data transport. Where network layer protocols are normally concerned with just "best effort" communications, where delivery is not guaranteed. Transport layer protocols are given intelligence in the form. of algorithms that ensure that reliable and efficient communication between devices takes place. This encompasses several related jobs, including lost transmission detection and handling, and managing the rate at which data is sent to ensure that the receiving device is not overwhelmed.

Transmission quality, meaning ensuring that transmissions are received as sent, is so important that some networking references define the transport layer on the basis of reliability and flow-control functions. However, not all transport layer protocols provide these services. Just as a protocol suite may have a connection-oriented and a connectionless transport layer protocol, it may also have one that provides reliability and data management services, and one that does not. Again, this is the case with TCP/IP: there is one main transport layer protocol; TCP, that includes reliability and flow control features, and a second, UDP, that doesn't.

第8题：

Service(71)Architecture aims to provide a model for the creation of service components in a wide range of languages and a model for assembling service components into a business solution -activities which are at the heart of building applications using a(72)architecture.

Service Data Objects aims to provide consistent means of handling(73)within applications, whatever its source or(74)may be. SDO provides a way of unifying data handling for databases and for services. SDO also has mechanisms for the handling of data while(75)from its source.

A．Oriented

B．Level

C．Component

D．Conference

正确答案：C

第9题：

Which of the following layers of the TCP／IP model most closely corresponds to the network layer of the OSI model?()

A.Application

B.Internet

C.Transport

D.Network

E.Data Link

参考答案：B

第10题：

The TCP／IP network model differs from the more popular OSI model. Which of the layers below belong to the TCP／IP model?()

A. application layer

B. session layer

C. transport layer

D. internet layer

E. network layer

F. data link layer

G. physical layer

参考答案：A, C, D

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