《计算机专业英语》第09章在线测试.doc

《计算机专业英语》第 09 章在线测试《计算机专业英语》第 09章在线测试剩余时间: 59:56 答题须知: 1、本卷满分 20分。 2、答完题后,请一定要单击下面的“交卷”按钮交卷,否则无法记录本试卷的成绩。 3、在交卷之前,不要刷新本网页,否则你的答题结果将会被清空。第一题、单项选择题(每题 1分, 5道题共 5分) 1、A________ isa set of rules that controls the interaction of different devices work or work. A、 model B、 protocol C、 dialog D、 query 2、 The purpose of the A is to provide fully integrated analog services to users. A、 ISDNB、 WWW C、 FTPD、 HTTP 3、 A(n) ________ isa connecting device that only regenerates the signal. A、 hubB、 repeater C、 router D、 switch 4、 Whereas a repeater operates only in the physical layer of the OSI model, a bridge operates in both the physical layer a nd the ________ layer of the OSI model. A、 Transport Layer B、 Network Layer C、 data-link D、 Physical Layer 5、 A(n) ________ is usually puter installed with the necessary software and allows works, each with pletely different set of protocols, municate. A、 hubB、 gateway C、 switch D、 router 第二题、多项选择题(每题 2分, 5道题共 10分) 1、 The end equipment munication system includes ______ . A、 computers B、 CRTs C、 printers D、 keyboards 2、 DTE is______ .A、 Digital T-carrier B、 data terminal equipment C、 satellite D、 the last piece of equipment that belonged to the subscriber ina data li nk system 3、 There are AB_ between the DTEs. A、 the modem B、 communications equipment C、 digital-to-analog converter D、 will be replaced by an upd _ ated standard 4、__________ provides tra