通信英语考试题型.doc

1、.通信英语考试题型（模拟） 通信英语考试采用计算机随机组卷，自动阅卷的考试方式。此次申报通信工程师无职称外语等级证书的人员，按照此方式进行复习准备。I.根据所给中文词组选择合适答案（单选）1.抽样量化与编码a. sampling rate b. sampling, quantizing and coding c. sampling frequency答案：b 2.印刷电路板a. printed circuit board b. traffic c. hub答案: a3.网络接口卡a. network interface card b. network services c. networkin

2、g technology 答案:a4.无线信道a. wireless channels b. wireless media c. searching tool答案: a5.信息服务a. information techniques b. information services c. textual messages答案: bII.根据所给英文词组选择合适答案（单选）1.local-area networka. 交换网络 b. 局域网 c. 城域网答案：b2.logical topologya. 逻辑拓扑 b. 树状拓扑 c. 拓扑结构答案：a3.parallel signal produce

3、d by the computera. 大量的接口设备 b .综合业务数字网 c. 由计算机产生的并行信号答案：c 4. giant network of computer located all over the worlda. 分布在全世界的计算机的庞大网络 b. 庞大的计算机网络分布到全世界 c. 庞大的网络资源由全世界共享答案: amercial technologya. 带宽的限制 b. 光检测器 c. 商用技术答案: cIII.选择合适答案（单选）1.Furthermore, we shall prove that a minimum theoretical sampling fr

4、equency of order 6.8KHz is required ( ) a voice channel ( ) the range 300 Hz to 3.4KHz.a. convey , occupy b. to convey, occupying c. conveying , occupied d. convey, to occupy答案：b2.It was ( ) in 1969, when the U.S. Department of Defense established a nationwide network ( ) a handful of universities a

5、nd contractors.a. start, connect b. started, to connect c. to start, connected d. to start, to connect答案：b3.The broadcast mobile networks, ( ) in densely populated areas, could be ( ) by a very small number of simultaneous calls.a. operation, jam b. operate, jam c. operating, jammed d. to operate, t

6、o jam答案：c4.The use of digital radio transmission and the advanced handover algorithms between radio cells in GSM networks allows for better frequency usage ( ) in analogue cellular systems, thus ( ) the number of subscribers that can be served.a. that, creation b. which, create c. the, to create d.

7、than, creating答案：d 5. The term ISDN was first defined within the CCITT in 1972. It referred to a network ( ) end-to-end digital connectivity ( ) a range of services.a. providing, for b. provision, to c. provided, with d. provide, into答案：a IV.阅读理解1.Digital transmission provides a powerful method for

8、overcoming noisy environments. Noise can be introduced into transmission path in many different ways: perhaps via a nearby lightning strike, the sparking of a car ignition system, or the thermal low-level noise within the communication equipment itself. It is the relationship of the true signal to t

9、he noise signal, known as the signal-to-noise ratio, which is of the most interest to the communication engineer. Basically, if the signal is very large compared to the noise level, then a perfect message can take place; however, this is not always the case. 根据上述短文，判断下列句子的正误，正确的选“T”,错误的选“F”:If the t

10、rue signal is very large compared to the noise level, then the information with higher quality can be obtained. A、T B、F答案：A 2.Like networking media, repeaters are networking devices that exist at Layer 1, the physical layer, of the OSI reference model. To begin understanding how a repeater works, it

11、 is important to understand first that as data leaves a source and goes out over the network, it is transformed into either electrical or light pulses that pass along the networking media. These pulses are referred to as signals. When signals first leave a transmitting station, they are clean and ea

12、sily recognizable. However, the longer the cable length, the weaker and more deteriorated the signals become as they pass along the networking media. For example, specifications for Category 5 twisted-pair Ethernet cable establish the maximum distance that distance, there is no guarantee that a NIC

13、can read the signal. A repeater can provide a simple solution if this problem exists. 根据上述短文，判断下列句子的正误，正确的选“T”,错误的选“F”:However, the shorter the cable length, the stronger the signals become as they pass along the networking media. A、T B、F答案：A 3.One of the most important technological developments du

14、ring the 1980s has been the emergence of optical fiber communication as a major inernational industry. One indication of the extent of this development is the total length of installed fiber, which was estimated to be 3.2 million kilometers in the U.S. alone by the end of 1987. Over 90% of this fibe

15、r was placed in service during the time period of 1982-1987. Long-haul trunk installations have been dominated, accounting for about 95% of the fiber in the U.S. 根据上述短文，判断下列句子的正误，正确的选“T”,错误的选“F”:One of the most important technological developments during the 1980 has been the emergence of optical fi

16、ber communication as a major international industry. A、T B、F答案：B V. 英译汉：1.Noise can be introduced into transmission path in many different ways: perhaps via a nearby lightning strike, the sparking of a car ignition system, or the thermal low-level noise within the communication equipment itself. It

17、is the relationship of the true signal to the noise signal, known as the signal-to-noise ratio, which is of the most interest to the communication engineer. 指出与原文中最一致的选项（单选）：A、电信工程师对噪声感兴趣B、电信设备传输有用信号C、真实信号与噪声信号的比值为信噪比D、开关的断开与闭合容易打火答案：C 2.LANs are high-speed, low-error data networks that cover a rela

18、tively small geographic area( up to a few thousand meters). LANs connect workstations, peripherals, and other devices in a single building or other geographically limited area. 指出与原文中最一致的选项（单选）：A、局域网连接工作站、外部设备和其他设备 B、局域网是一个覆盖大楼的网络 C、局域网是目前办公场所常用的组网形式D、局域网主机设备并不属于某一层答案：A 3.The cell coverage area is controlled by a base station which is itself made up of two elements. The first element is the transmission system which communicates out to the mobile and also receives information from it to set up and maintain calls when actually in operation.