广州开放大学计算机专业英语作业答案

计算机专业英语

学校: 广州开放大学

平台: 国家开放大学

题目如下：

1. Older microcomputers’ speeds are usually measured in nanoseconds.

答案: 错误

2. The movement of electronic signals between main memory and the ALU as well as the control signal between the CPU and input /output devices are controlled by the control unit of the CPU.

答案: 正确

3. The calculation speed of computer is controlled by the ALU unit.

答案: 正确

4. RAM stands for read-only memory.

答案: 错误

5. The CPU usually uses directly the software instructions and data stored in the hard disks.

答案: 错误

6. As soon as you turn the computer off, the contents of RAM disappear.

答案: 正确

7. Input devices can only input letters, numbers and symbols.

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8. One pixel forms one character.

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9. Paper is a medium for softcopy form.

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10. Older microcomputers'speeds are usually measured in nanoseconds.

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11. The movement of electronic signals between main memory and the ALU as well as the control signal between the CPU and input /output devices are controlled by the control unit of the CPU.

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12. The calculation speed of computer is controlled by the ALU unit.

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13. Personal computer software is dependent on specific operating systems and machines.

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14. DOS can only work with 32-bit microprocessor.

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15. Windows is the 32-bit operating system with networking capability and Internet access.

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16. The graphical user interface (GUI) era at Microsoft began with Windows operating system.

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17. Windows XP is Microsoft's most advanced desktop operating system.

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18. The Windows members are descendent from DOS, Windows 1.0-1.33, Windows 9x and Windows NT.

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19. Software is divided into system software, operating system, and application software.

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20. Application software (also called end-user program) is designed to perform a specific function directly for the user.

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21. Operating systems, compilers and utilities for managing computer resources are low-level programs.

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22. With WPS, the user can modify a document and print it on a printer.

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23. A spreadsheet is different from a table(表格),for each value is related to the other values in a spreadsheet.

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24. Microsoft Word can help you design and manipulate spreadsheet electronically.

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25. Microsoft Word XP is a member of Microsoft office 2000.

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26. Documents created in Word are hard to be incorporated into Powerpoint.

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27. Word Wizard can direct you how to do when you create a specific document, such as a business letter or resume.

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28. Database is organized into tables.

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29. One field may contai n several pieces of information.

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30. Client/server database system is no longer in use now.

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31. Flat-file style of database is suitable for large amounts of data.

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32. Oracle is one example of relational databases.

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33. One major advantage of relation model is that it allows duplication of data.

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34. SQL Server can allow many users to visit the database at the same time.

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35. To use SQL Server, you must install it on your local machine.

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36. You can not change the location of the database during creating a new database.

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37. The process of planning and creating computational sequences for a computer to follow is the process of developing programs.

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38. Coding means compiling a program.

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39. The process of running a program is the process of debugging.

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40. The purpose of programming languages is to facilitate communication between humans.

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41. A high-level language is an artificial language with which we can write various instructions.

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42. High-level language is popular, because it is directly executable in computer without compiling.

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43. The standard edition, the professional edition and enterprise edition are three commercial editions of VB.

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44. When you start VB , you will see a SDI (Single-Document Interface) format.

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45. The windows that are displayed when you start VB are known as the Visual Basic Integrated Development Environment (IDE).

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46. During initial days of the development of software, everything was done in discipline.

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47. The definition of software engineering is "the application of systematic, disciplined, quantifiable approaches to the development, operation, and maintenance of software."

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48. Software engineering covers not only the technical aspects of building software systems, but also management issues.

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49. Object-oriented method is widely believed to improve programmer productivity.

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50. If you want to use the object in the object-oriented software development you should get to know something about what is in the “black box”.

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51. OA and OOD do a great job for increasing the productivity.

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52. The job of software testing is often concerned with verification and validation.

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53. Black box testing and glass box testing have the same function to software-testing.

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54. White box testing requires the tester to have knowledge of the internal structure.

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55. Common topologies of networks include the star, bus, and ring.

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56. A WAN is a network that connects LANs and nodes across a wide geographical area.

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57. A switch sends packets to all nodes on a network.

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58. WWW provides access to a variety of Internet resources from different interfaces.

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59. Hyperlinks enable users to jump from site to site on the Internet.

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60. Besides WWW sites, we can find many other resources, such as FTP, Telnet, E-mail.

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61. The chief responsibility of TCP/IP is to ensure reliable point-to-point connectivity.

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62. The packets may travel the same or different routes to the destination.

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63. Under current (IPv4) specifications , each packet is 16 bits long.

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64. Information system resembles nervous system in that they are both very large.

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65. The main focus of MIS is the management function of an organization.

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66. The application of EMIS can improve the efficiency and effectiveness of traditional school tasks.

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67. Business-to-business e-commerce is the use of e-business between two companies.

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68. The B2C e-commerce mainly uses the mechanism of EDI and the Web applications.

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69. EDI is no longer used in the B2B E-commerce.

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70. Multimedia refers to a syntheses of graphics, animation, optical storage, image processing, and sound.

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71. Video can be incorporated into multimedia applications.

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72. A multimedia system allows end users to share, communicate and process a variety of forms of information in an integrated manner.

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73. The decision making is based on information.

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74. Data warehouse is a single source of information to understand different subjects.

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75. Data warehouse only contains current information.

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76. A computer virus is also a computer program.

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77. New antivirus software is always more effective in defending virus attack.

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78. Worm virus such as Blaster can cause a lot of computers to crash.

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79. The web server software flaws can be used by hackers.

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80. The first step to prevent attack is to install a firewall.

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81. Firewalls always require high hardware configurations.

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82. high-level language assembly language written machine language notation A programming language, designed to facilitate the communication between human and computers, is a for describing computation in readable form. There are 3 levels of programming languages, they are , which can be run directly by computer; and . There are different high-level programming languages. Fortunately, most of them have many kinds of construct in common and vary only in the way that these must be . Therefore, first thing to be decided about a task is to choose which programming language is best suited for the job. 答案：

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83. Internet is comprised of the Internet edge and the core network.

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84. The end-to-end principle is a classic design principle of computer networking.

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85. Hosts primarily lie at the center of the network.

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86. TCP/IP is a type of protocol for local area network.

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87. Transmission rate alone is sufficient to evaluate the performance of computer network.

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88. The appropriate routing path selection is in the transport layer.

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89. The TCP can provide reliable byte stream transmission services.

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90. Availability refers to the property that information and system resources or services are accessible wherever needed and whenever needed.

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91. Denial of service implies that Internet users falsely deny submitting or receiving information.

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92. A network virus is a set of instructions or program code prepared by people.

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93. Hostile attack can cause direct harm to network security and can destroy the security of computing systems.

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94. The security of mobile Internet mainly has three aspects: intelligent mobile device security, network security and application security.

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95. Malicious software can lure users through the means of SMS hijacking, MMS, E-mail, communication records, call records, favorites, desktop, etc.

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96. The way in which computer worm spreads itself is by finding and attaching itself to other program code.

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97. Header is not necessary for packets switching.

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98. Once the CPU something in RAM, it must be able to find it when needed. To this, each location in memory has an , Whenever a block of data,, program, or result of a is stored in the memory, it is stored into one or more consecutive addresses depending on its size. computer systems automatically set up and directory tables that the address of the first character of all data stored in the memory along with the number of addresses used to the retrieval of the data when necessary.

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99. 跟据括号中的中文意思填入正确形式的英文单词： Registers are special temporary storage locations within the CPU—some in the control unit and some in the ALU. Registers can very quickly(接受）and （储存）data and instructions that are to be used immediately. Main memory hods data that will be used very shortly. （辅助的）storages, such as the disk, （保存） data that will be used later. To（执行）an instruction, the control unit of the CPU （检索数据） it from the main memory and （转移） it into a register. The typical operations that take place in the processing of an instruction are part of either the instruction cycle or the execution（周期）.

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