1、数据库系统工程师-计算机专业英语(一)及答案解析(总分：40.00，做题时间：90 分钟)Networks can be interconnected by different devices. In the physical layer, networks can be connected by (1) or hubs, which just move the bits from one network to an identical network. One layer up we find bridges and switches, which operate at data link
2、layer. They can accept (2) , examine the MAC address, and forward the frames to a different network while doing minor protocol translation in the process. In the network layer, we have routers that can connect two networks. If two networks have (3) network layer, the router may be able to translate
3、between the packet formats. In the transport layer we find transport gateway, which can interface between two transport connections. Finally, in the application layer, application gateways translate message (4) . As an example, gateways between Internet e-mail and X.400 e-mail must (5) the e-mail me
4、ssage and change various header fields.（分数：5.00）(1).A. reapers B. relays C. connectors D. modems（分数：1.00）_(2).A. frames B. packets C. packages D. cells（分数：1.00）A.B.C.D.(3).A. special B. dependent C. similar D. dissimilar（分数：1.00）A.B.C.D.(4).A. syntax B. semantics C. language D. format（分数：1.00）A.B.C.
5、D.(5).A. analyze B. parse C. delete D. create（分数：1.00）A.B.C.D.DOM is a platform-and language- (11) API that allows programs and scripts to dynamically access and update the content, structure and style of WWW documents (currently, definitions for HTML and XML documents are part of the specification)
6、. The document can be further processed and the results of that processing can be incorporated back into the presented (12) . DOM is a (13) -based API to documents, which requires the whole document to be represented in (14) while processing, it. A simpler alternative to DOM is the event-based SAX,
7、which can be used to process very large (15) documents that do not fit info the memory available for processing.（分数：5.00）(1).A. specific B. neutral C. contained D. related（分数：1.00）A.B.C.D.(2).A. text B. image C. page D. graphic（分数：1.00）A.B.C.D.(3).A. table B. tree C. control D. event（分数：1.00）A.B.C.D
8、.(4).A. document B. processor C. disc D. memory（分数：1.00）A.B.C.D.(5).A. XML B. HTML C. script D. web（分数：1.00）A.B.C.D.MIMD systems can be classified into (150) -oriented systems, high-availability systems and response-oriented systems.The goal of (150) -oriented multiprocessing is to obtain high (150)
9、 (151) minimal computing cost. The techniques employed by multiprocessor operating systems to achieve this goal take advantage of an inherent processing versus input/output balance in the workload to produce (152) and (153) . loading of system (154) （分数：5.00）(1).A. though B. through C. throughout D.
10、 throughput（分数：1.00）A.B.C.D.(2).A. at B. of C. on D. to（分数：1.00）A.B.C.D.(3).A. balance B. balanced C. balances D. balancing（分数：1.00）A.B.C.D.(4).A. uniform B. unique C. unit D. united（分数：1.00）A.B.C.D.(5).A. resource B. resources C. source D. sources（分数：1.00）A.B.C.D.The most accurate and most boring w
11、ay to (105) Java is that it is a new computer programming language developed by Sun Microsystems that creates (106) independent programs that can be distributed and nm remotely. To run Java programs, a computer must have a Java interpreter. Currently (107) Java programs are small “applets“ that are
12、(107) as part of web pages.When you use a Java (108) browser to view a Web page that includes a Java applet, the browser loads the applet onto your computer through your modem or network. Then the Java interpreter runs the applet, which could include animation or sound, on your computer rather than
13、transmitting the code bit by bit over Internet. A few thousand bytes of Java code can tam into a powerful program on your computer.So an applet could include (109) with Java interpreter.（分数：5.00）(1).A. command B. commentC. describe D. discover（分数：1.00）A.B.C.D.(2).A. condition B. platformC. programme
14、r D. workstation（分数：1.00）A.B.C.D.(3).A. available B. capable C. possible D. probableE. stable F. valuable（分数：1.00）A.B.C.D.E.F.(4).A. available B. capable C. possible D. probableE. stable F. valuable（分数：1.00）A.B.C.D.E.F.(5).A. animation or sound B. animation and soundC. animation and be run D. animat
15、ion and be loaded（分数：1.00）A.B.C.D.All of these applications will enhance the (130) of life and spur economic growth. Over half of the U.S. work force is now in jobs that are information (131) . The telecommunication and information sector of the U.S. economy now (132) for 12 percent of the Gross Dom
16、estic Product, growing much faster than any other sector of the economy. Last year the (133) in this sector exceeded 700 billion dollars. The U.S. exported over 48 billion dollars of telecommunication equipment (134) .（分数：5.00）(1).A. quantity B. quality C. mass D. amount（分数：1.00）A.B.C.D.(2).A. based
17、 B. bassed C. bases D. base（分数：1.00）A.B.C.D.(3).A. look B. looks C. account D. accounts（分数：1.00）A.B.C.D.(4).A. revenues B. expenses C. outputs D. loss（分数：1.00）A.B.C.D.(5).A. among B. alone C. simple D. single（分数：1.00）A.B.C.D.Basically, a firewall is a (145) process or a set of integrated processes t
18、hat runs on a router or (146) to control the flow of networked application traffic (147) through it. Typically, firewalls are placed on the entry point to a (148) network such as the Internet. They could be considered traffic cops. The firewalls (149) is to ensure that all communication between an o
19、rganizations network and the Internet conform to the organizations policies.（分数：5.00）(1).A. dependent B. isolated C. related D. standalone（分数：1.00）A.B.C.D.(2).A. browser B. client C. repeater D. server（分数：1.00）A.B.C.D.(3).A. pass B. passed C. passing D. passes（分数：1.00）A.B.C.D.(4).A. local B. nationa
20、l C. private D. public（分数：1.00）A.B.C.D.(5).A. mole B. pole C. role D. rule（分数：1.00）A.B.C.D.An expert system is a software that (41) specialist knowledge-about a particular domain of (42) and is capable of making (43) decisions with in that domain. Although expert systems typically focus on a very na
21、rrow domain, they have achieved dramatic success with (44) problems, This has excited wide spread interest outside the research laboratories from which they emerged.Expert systems have given rise to a set of “knowledge engineering“ methods constituting a new approach to design of high performance so
22、ftware system. This new approach represents an (45) change with revolutionary consequences.（分数：5.00）(1).A. develops B. directory C. effect D. encapsulatesE. evolutionary F. experienced G. expertise H. intelligentI. real-life J. real-time（分数：1.00）A.B.C.D.E.F.G.H.I.J.(2).A. develops B. directory C. ef
23、fect D. encapsulatesE. evolutionary F. experienced G. expertise H. intelligentI. real-life J. real-time（分数：1.00）A.B.C.D.E.F.G.H.I.J.(3).A. develops B. directory C. effect D. encapsulatesE. evolutionary F. experienced G. expertise H. intelligentI. real-life J. real-time（分数：1.00）A.B.C.D.E.F.G.H.I.J.(4
24、).A. develops B. directory C. effect D. encapsulatesE. evolutionary F. experienced G. expertise H. intelligentI. real-life J. real-time（分数：1.00）A.B.C.D.E.F.G.H.I.J.(5).A. develops B. directory C. effect D. encapsulatesE. evolutionary F. experienced G. expertise H. intelligentI. real-life J. real-tim
25、e（分数：1.00）A.B.C.D.E.F.G.H.I.J.Soon, more of the information we receive via the Internet could come (155) in digital wrappers.Wrappers are made up, (156) software code thats targeted to do specific things with the data (157) within them, such as helping to define queries for search engines. They also
26、 keep (158) from (159) access to that code.（分数：5.00）(1).A. package B. packaged C. packages D. packaging（分数：1.00）A.B.C.D.(2).A. of B. off C. on D. out（分数：1.00）A.B.C.D.(3).A. close B. closed C. enclose D. enclosed（分数：1.00）A.B.C.D.(4).A. insiders B. money C. outsiders D. warehouse（分数：1.00）A.B.C.D.(5).A
27、. gain B. gained C. gains D. gaining（分数：1.00）A.B.C.D.数据库系统工程师-计算机专业英语(一)答案解析(总分：40.00，做题时间：90 分钟)Networks can be interconnected by different devices. In the physical layer, networks can be connected by (1) or hubs, which just move the bits from one network to an identical network. One layer up we fi
28、nd bridges and switches, which operate at data link layer. They can accept (2) , examine the MAC address, and forward the frames to a different network while doing minor protocol translation in the process. In the network layer, we have routers that can connect two networks. If two networks have (3)
29、 network layer, the router may be able to translate between the packet formats. In the transport layer we find transport gateway, which can interface between two transport connections. Finally, in the application layer, application gateways translate message (4) . As an example, gateways between Int
30、ernet e-mail and X.400 e-mail must (5) the e-mail message and change various header fields.（分数：5.00）(1).A. reapers B. relays C. connectors D. modems（分数：1.00）_解析：(2).A. frames B. packets C. packages D. cells（分数：1.00）A. B.C.D.解析：(3).A. special B. dependent C. similar D. dissimilar（分数：1.00）A.B.C.D. 解析：
31、(4).A. syntax B. semantics C. language D. format（分数：1.00）A.B. C.D.解析：(5).A. analyze B. parse C. delete D. create（分数：1.00）A.B. C.D.解析：解析 网络能通过各种各样的设备进行互联。在物理层，网络是通过中继器或集线器连接起来的，主要实现把比特从一个网络传输到另一个同样的网络。在物理层的上面，网桥和交换机工作在数据链路层。它们能够接受帧，检测 MAC地址，当在传输过程中采用底层协议时，把这些数据帧传送到一个不同的网络。在网络层，路由器可以连接两个网络。如果两个网络有不相同的
32、网络层，路由器能够实现数据包的格式转换。在传输层，有能实现连接网络传输层的连接网关。最后在应用层，应用网关能转换消息的语义。比如，在 E-mail和 X.400 E-mail之间的网关必须要解析 E-mail消息和改变不同的标题域。DOM is a platform-and language- (11) API that allows programs and scripts to dynamically access and update the content, structure and style of WWW documents (currently, definitions for
33、 HTML and XML documents are part of the specification). The document can be further processed and the results of that processing can be incorporated back into the presented (12) . DOM is a (13) -based API to documents, which requires the whole document to be represented in (14) while processing, it.
34、 A simpler alternative to DOM is the event-based SAX, which can be used to process very large (15) documents that do not fit info the memory available for processing.（分数：5.00）(1).A. specific B. neutral C. contained D. related（分数：1.00）A.B. C.D.解析：(2).A. text B. image C. page D. graphic（分数：1.00）A.B.C.
35、 D.解析：(3).A. table B. tree C. control D. event（分数：1.00）A.B. C.D.解析：(4).A. document B. processor C. disc D. memory（分数：1.00）A.B.C.D. 解析：(5).A. XML B. HTML C. script D. web（分数：1.00）A. B.C.D.解析：解析 DOM 是一种独立于平台和语言的 API，它允许程序和脚本语言动态地访问和更新 WWW 文档的内容、结构及样式(目前对 HTML和 XML文档的定义也是这些规范的一部分)。这些文档可以被进一步的处理，把处理的结果传
36、送到当前页面。DOM 是一种树型的 API文档，在处理这种文档的时候，要求将整个文档调入内存中进行表示。 DOM 的一种简单替代方案就是基于事件的 SAX，它可以用来处理大量的 XML文档，同时在处理文档的同时不需要将其调入内存。MIMD systems can be classified into (150) -oriented systems, high-availability systems and response-oriented systems.The goal of (150) -oriented multiprocessing is to obtain high (150)
37、(151) minimal computing cost. The techniques employed by multiprocessor operating systems to achieve this goal take advantage of an inherent processing versus input/output balance in the workload to produce (152) and (153) . loading of system (154) （分数：5.00）(1).A. though B. through C. throughout D.
38、throughput（分数：1.00）A.B.C.D. 解析：(2).A. at B. of C. on D. to（分数：1.00）A. B.C.D.解析：(3).A. balance B. balanced C. balances D. balancing（分数：1.00）A.B. C.D.解析：(4).A. uniform B. unique C. unit D. united（分数：1.00）A. B.C.D.解析：(5).A. resource B. resources C. source D. sources（分数：1.00）A.B. C.D.解析：解析 MIMD 系统可以分为面向
39、吞吐量的系统、高可用性系统和面向响应的系统。面向吞吐量的多处理机的目标是以最小计算成本得到高吞吐量。为达到此目标，多处理机操作系统采用的技术是利用工作负载上对于 I/O平衡固有处理过程以产生系统资源平衡和负载均衡。The most accurate and most boring way to (105) Java is that it is a new computer programming language developed by Sun Microsystems that creates (106) independent programs that can be distribut
40、ed and nm remotely. To run Java programs, a computer must have a Java interpreter. Currently (107) Java programs are small “applets“ that are (107) as part of web pages.When you use a Java (108) browser to view a Web page that includes a Java applet, the browser loads the applet onto your computer t
41、hrough your modem or network. Then the Java interpreter runs the applet, which could include animation or sound, on your computer rather than transmitting the code bit by bit over Internet. A few thousand bytes of Java code can tam into a powerful program on your computer.So an applet could include
42、(109) with Java interpreter.（分数：5.00）(1).A. command B. commentC. describe D. discover（分数：1.00）A.B.C. D.解析：(2).A. condition B. platformC. programmer D. workstation（分数：1.00）A.B. C.D.解析：(3).A. available B. capable C. possible D. probableE. stable F. valuable（分数：1.00）A. B.C.D.E.F.解析：(4).A. available B.
43、capable C. possible D. probableE. stable F. valuable（分数：1.00）A.B. C.D.E.F.解析：(5).A. animation or sound B. animation and soundC. animation and be run D. animation and be loaded（分数：1.00）A.B.C. D.解析：解析 关于 Java一词最准确但也最乏味的描述是，Java 是由 Sun微系统公司开发的一种新的计算机程序设计语言，它用来生成与平台无关的可以分布式、远程运行的程序。要想运行 Java程序，计算机上必须装有
44、Java解释器。目前的 Java程序是被用做网页的一部分的小程序片断(applets)。当你用一个支持 Java的浏览器来浏览一个包含 Java小应用程序的网页时，浏览器通过调制器或网络把这个小应用程序传到你的计算机上，然后在 Java解释器上运行这个可能包含了动画和声音的小应用程序。这个操作都在你的计算机上完成，而不是通过 Internet一位一位地把代码传过来。几千字节的 Java代码可能在你的计算机上变成一个功能强大的程序。所以一个 Java小应用程序可以包含动画，并月。需要 Java解释器来执行。All of these applications will enhance the (1
45、30) of life and spur economic growth. Over half of the U.S. work force is now in jobs that are information (131) . The telecommunication and information sector of the U.S. economy now (132) for 12 percent of the Gross Domestic Product, growing much faster than any other sector of the economy. Last y
46、ear the (133) in this sector exceeded 700 billion dollars. The U.S. exported over 48 billion dollars of telecommunication equipment (134) .（分数：5.00）(1).A. quantity B. quality C. mass D. amount（分数：1.00）A.B. C.D.解析：(2).A. based B. bassed C. bases D. base（分数：1.00）A. B.C.D.解析：(3).A. look B. looks C. acc
47、ount D. accounts（分数：1.00）A.B.C.D. 解析：(4).A. revenues B. expenses C. outputs D. loss（分数：1.00）A. B.C.D.解析：(5).A. among B. alone C. simple D. single（分数：1.00）A.B. C.D.解析：解析 所有这些应用都会提高人们的生活质量并刺激经济增长。现在美国半数以上的劳动力从事着依赖于信息的工作。在美国经济中，通信和信息部门占国内国民生产总值的 12%，而且增长速度也比任何其他经济部门都快。去年该行业收入超过 7000亿美元，美国仅电信设备的出口额就超过 4
48、80亿元。Basically, a firewall is a (145) process or a set of integrated processes that runs on a router or (146) to control the flow of networked application traffic (147) through it. Typically, firewalls are placed on the entry point to a (148) network such as the Internet. They could be considered tr
49、affic cops. The firewalls (149) is to ensure that all communication between an organizations network and the Internet conform to the organizations policies.（分数：5.00）(1).A. dependent B. isolated C. related D. standalone（分数：1.00）A.B.C.D. 解析：(2).A. browser B. client C. repeater D. server（分数：1.00）A.B.C.D. 解析：(3).A. pass B. passed C. passing D. passes（分数：1.00）A.B.C. D.解析：(4).A. lo
