【计算机类职业资格】软件水平考试（中级）网络工程师上午（基础知识）试题-试卷4及答案解析.doc

1、软件水平考试（中级）网络工程师上午（基础知识）试题-试卷 4及答案解析(总分：28.00，做题时间：90 分钟)一、选择题(总题数：5，分数：28.00)1.选择题（）下列各题 A、B、C、D 四个选项中，只有一个选项是正确的，请将此选项涂写在答题卡相应位置上，答在试卷上不得分。_在双绞线布线后要进行测试，一般情况，下面(64)不是测试的项目。光纤测试的内容不包括(65)项目。（分数：4.00）A.近端串扰B.拓扑结构C.开路或短路D.错对A.衰励损耗B.长度C.近端串扰D.时延ATM when referring to computers is a dedicated, connection

2、 switching technology that organizes digital data into 53-byte(69)units and transmits them over a physical(70)using digital signal technology. ATM is capable oftransniitfing at speeds of 155 or 622 MBit/s and faster.（分数：4.00）A.minutenessB.toothfulC.cellD.spotA.mediumB.mediaC.matterD.plastidIn the fo

3、llowing essay, each blank has four choices. Choose the most suitable one from the four choices and write down in the answer sheet.A socket is basically an end point of a communication link between two applications. Sockets that extend over a network connect two or more applications running on(66)com

4、puters attached to the network. A socket(67)two addresses:(68). Sockets provide a(69)communication channel between one or more systems. There are(70)sockets separately using TCP and UDP.（分数：10.00）A.uniqueB.separateC.sameD.dependentA.is made ofB.composed ofC.is composed ofD.is consisted ofA.Email add

5、ress and IP addressB.MAC address and port addressC.MAC address and IP addressD.port number and IP addressA.full-duplexB.half-duplexC.simplexD.complexA.message and packetB.packet and frameC.stream and datagramD.flow and blockIn the following essay, each blank has four choices. Choose the best answer

6、and write-down on the answer sheet. Microwave communication uses high-frequency(71)waves that travel in straightlines through the air. Because the waves cannot(72)with the curvature of the earth, they can be(73)only over short distance. Thus, microwave is a good(74)for sending data between buildings

7、 in a city or on a large college campus. For longer distances, the waves must be relayed by means of “dishes“ or(75). These can be installed on towers, highbuildings, and mountain tops.（分数：10.00）A.opticalB.radioC.electricalD.magneticA.reflexB.distortC.bendD.absorbA.transmittedB.transformedC.converte

8、dD.deliveredA.materialB.equipmentC.mediumD.channelA.repeatersB.radarsC.telephonesD.antennas软件水平考试（中级）网络工程师上午（基础知识）试题-试卷 4答案解析(总分：28.00，做题时间：90 分钟)一、选择题(总题数：5，分数：28.00)1.选择题（）下列各题 A、B、C、D 四个选项中，只有一个选项是正确的，请将此选项涂写在答题卡相应位置上，答在试卷上不得分。_解析：在双绞线布线后要进行测试，一般情况，下面(64)不是测试的项目。光纤测试的内容不包括(65)项目。（分数：4.00）A.近端串扰B.

9、拓扑结构 C.开路或短路D.错对解析：A.衰励损耗B.长度C.近端串扰 D.时延解析：解析：双绞线系统的测试元素包括连接图测试、线缆长度测试、衰减、近端串音衰减、错对、开路或短路。 光纤测试包括衰减、带宽、长度与耐延。ATM when referring to computers is a dedicated, connection switching technology that organizes digital data into 53-byte(69)units and transmits them over a physical(70)using digital signal te

10、chnology. ATM is capable oftransniitfing at speeds of 155 or 622 MBit/s and faster.（分数：4.00）A.minutenessB.toothfulC.cell D.spot解析：A.mediumB.media C.matterD.plastid解析：解析：cell 意思为“单元，细胞”，cellunits 在题目中意思为“信元”；medium 意思为“介质，媒质”，它的复数形式为 media或者 mediums。本题主要介绍 ATM技术传送的信元及其传输速率。In the following essay, eac

11、h blank has four choices. Choose the most suitable one from the four choices and write down in the answer sheet.A socket is basically an end point of a communication link between two applications. Sockets that extend over a network connect two or more applications running on(66)computers attached to

12、 the network. A socket(67)two addresses:(68). Sockets provide a(69)communication channel between one or more systems. There are(70)sockets separately using TCP and UDP.（分数：10.00）A.uniqueB.separate C.sameD.dependent解析：A.is made ofB.composed ofC.is composed of D.is consisted of解析：A.Email address and I

13、P addressB.MAC address and port addressC.MAC address and IP addressD.port number and IP address 解析：A.full-duplex B.half-duplexC.simplexD.complex解析：A.message and packetB.packet and frameC.stream and datagram D.flow and block解析：解析：翻译如下。 Socket 是两个应用之间的联系接口。Socket 使网络中不同的计算机之间的应用能够联系在一起。一个 Socket有两个地址：

14、端口号和 IP地址。Socket 提供了在多个系统中全双工通信的方式。TCP 在 Socket传递的是字符流，而 UDP传递的是数据报。In the following essay, each blank has four choices. Choose the best answer and write-down on the answer sheet. Microwave communication uses high-frequency(71)waves that travel in straightlines through the air. Because the waves can

15、not(72)with the curvature of the earth, they can be(73)only over short distance. Thus, microwave is a good(74)for sending data between buildings in a city or on a large college campus. For longer distances, the waves must be relayed by means of “dishes“ or(75). These can be installed on towers, highbuildings, and mountain tops.（分数：10.00）A.opticalB.radio C.electricalD.magnetic解析：A.reflexB.distortC.bend D.absorb解析：A.transmitted B.transformedC.convertedD.delivered解析：A.materialB.equipmentC.medium D.channel解析：A.repeatersB.radarsC.telephonesD.antennas 解析：