1、 计算机科学技术导论 模拟卷 一、Multiple Choice 单选题（每个空 2 分，共 40 分）1. Turing Machine is ( ).A. the very first electronic computer B. the first general-purpose computerC. an abstract mathematical model D. the first commercial computer2. The transistor was used to make the main processing component in the hardware i
2、n the ( ) generation of computer.A. first B. second C. third D. fourth3. In computing discipline we always analyze problems by removing complexity and details, leaving only the necessary information. This mental thinking way is ( ).A. engineering B. top-down design C. simplicity D. abstraction4. 813
3、 is not a number in ( ) number system.A. hexadecimal B. decimal C. octal D. 12-base5. The information in real world is often ( ) while computer can only represent ( ) information. This is a limitation of computing.A. analog B. decimal C. binary D. digital6. The following are audio formats except ( )
4、.A. mp3 B. wav C. gif D. au7. English is represented in ( ) character set.A. ASCII B. Unicode C. neither ASCII nor UnicodeD. either ASCII or Unicode8. Images can be represented in ( ).A. raster-graphics format B. vector-graphics formatC. either A or B D. neither A nor B9. The most fundamental operat
5、ions performed by computer hardware is ( ).A. logical functions such as NOT, AND and ORB. arithmetic operations such as addition, subtraction and multiplicationC. instructions such as load, store and processD. on or off of an electrical flow 10. In a ( ) circuit, the input values explicitly determin
6、e the output.A. combinational B. sequential C. S-R latch D. register11. Small storage area in CPU is called ( ).A. register B. memory C. disk D. ROM12. The von Neumann architectures two primary components are its ( ) , which stores both instructions and data, and its processor, which provides operat
7、ions for modifying the contents of the memory.A. control unit B. memory C. input/output devices D. secondary storage devices13. Imperative programming languages are abstractions of the underlying von Neumann computer architecture. The central features of imperative languages are variables, which mod
8、el the memory cells; and ( ), which model data transmitted from memory to the CPU.A. assignment statements B. Boolean expressions C. conditional statements D. looping statements14. Object-oriented languages have an essential ingredient ( ) which enforces information hiding.A. object B. encapsulation
9、 C. inheritance D. polymorphism15. The concept of process is defined as a ( ) in execution.A. application B. software C. process D. program16. ( ) is the technique of keeping multiple programs in main memory at the same time.A. Multimedia B. Multiprogramming C. Multiuser D. Multiprocessor17. In a(n)
10、 ( ), response time is crucial; a minimum response time is guaranteed to the user.A. real-time system B. time-sharing system C. batch system D. operating system18. File extension indicates ( ).A. file media type B. file operation C. file protection D. file location19. The World Wide Web is both an i
11、nfrastructure of information and the network software used to access it. The Web is comprised of web sites and web pages connected by ( ) .A. gateways B. URLs C. links D. wires二、Fill in the Blanks（每空 2分，共 202=40分）1. The fundamental question underlying all of computing is:.2. The place value of digit
12、 1 in 1039 in 13-base number system is .3. Negative decimal number -10 is represented as in 8-bit sign-magnitude binary, and represented as in 8-bit 2s complement.4. Binary real number 0.11 is in decimal. 5. Suppose a language containing 200 characters. To represent this language in computer, we nee
13、d at least bits to represent each character.6. The yellow color is represented as the RGB value .7. The key problem in representing video information in computer is .8. As for the following circuit, the Boolean expression of the output is .When A is 0 and B is 1, the output is .9. One approach to de
14、veloping an algorithm is using themethodology which breaks a problem up into a set of subproblems, the solutions of which create a solution to the overall problem. This approach results in astructure of modules. 10. In Pep/7 virtual computer, if we want to load a decimal number 7 into A register, th
15、e instruction should be written as .11. In Pep/7 virtual computer, given the following state of memory (in hexadecimal),0001 A20002 110003 FF0004 00After the execution of the instruction “00001001 00000000 00000011”, the content of the A register is (in hexadecimal).12. Suppose that list of cylinder
16、 requests is 30, 40, 12, 20, 66. Assume that the disk is positioned at cylinder 20. If Shortest-Seek-Time-First disk scheduling algorithm is used ,the order in which these requests are handled is .13. Using the directory tree shown in Figure 11.4 , Page 372 in the textbook, assuming the current work
17、ing directory is C:WINDOWSSystem, the absolute path of john.doc is , and the relative path of john.doc is . . 14. The network protocol that breaks messages into packets, reassembles them at the destination, and takes care of errors is .15. Broadband is network technologies that generally provide dat
18、a transfer speeds greater than bps. 16. Web pages are created using HTML, a language that uses tags to indicate the nature of a piece of information and how it should be displayed. Every HTML document is interpreted by to be shown as a web page.三、Reading Comprehension（每小题 2 分，共 25=10 分）Broadly, all
19、files can be classified as either a text file or a binary file. In a text file the bytes of data are organized as characters from the ASCII or Unicode character sets. A binary file requires a specific interpretation of the bits based on the information in the file. The terms text file and binary fil
20、e are somewhat misleading. They seem to imply that the information in a text file is not stored as binary data. Ultimately, all information on a computer is stored as binary digits. These terms refer to how those bits are formatted: as pieces of 8 or 16 bits, interpreted as characters, or in some ot
21、her special format. Some information lends itself to a character representation, which often makes it easier for a human to read and modify. Any text editor can be used to create, view, and change the contents of a text file, no matter what specific type of information it contains. For other informa
22、tion types, it is more logical and efficient to represent data by defining a specific binary format and interpretation. Only programs set up to interpret that type of data can be used to view or modify it. 1. Which of the following statements is false? ( ) A. A text file contains data organized as c
23、haractersB. A text file does not require information to interpret its bytes of dataC. A text file is not stored as binary dataD. A text file is composed of pieces of 8 or 16 bits2. The phrase “those bits” refers to ( ) in previous sentences.A. “all information on a computer”B. “binary digits”C. “the
24、 information in a text file”D. “binary data ”3. Suppose there are two different text editors: “ed1” and “ed2”. Text file “txt1” is created by ed1. Then “txt1” can be viewed and modified by ( ).A. only “ed1” B. only “ed2” C. either “ed1” or “ed2”D. neither “ed1” nor “ed2”4. Suppose there are two bina
25、ry files “b1” and “b2” . “b1” is created by program “p1”, and “b2” is created by program “p2”. Which of the following statements is true? ( )A. “p1” can not modify “b1”B. “p1” can not modify “b2”C. “p1” may not be able to modify “b1”D. “p1” may not be able to modify “b2”5. “For other information typ
26、es, it is more logical and efficient to represent data by defining a specific binary format and interpretation” means “other information types” should be stored as ( ).A. text files B. binary files C. programs D. computer information四、Answer The Following Questions（每小题 5 分，共 10 分）1. Convert decimal number 1019 and 2150 to octal numbers. Then add these two numbers in octal number system.2. When we create a C+ program as a .cpp file in Visual C+6.0 and click “run” to run the program, what actually happens?
