(Test Bank) Big Java Early Objects

Horstmann, 7

Computer Science & Engineering

Test Bank

7th Edition

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Test Bank for Big Java Early Objects, The downloadable file consists of 703 pages, and the total size of the file is 5.69 MB. Purchase now only for highly discounted price.

Author(s): Horstmann

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Name: Class: Date: testbank -bj-7-ch1 Powered by Cognero Page 1 Indicate the answer choice that best completes the statement or answers the question. 1. Which statement best describes a computer program? a. A program is a sequence of comments. b. A program can decide what task it is to perform. c. A program is a sequence of instructions and decisions that the computer carries out. d. A program can only perform one simple task. 2. Which statement regarding computer programs is correct? a. Computer programs can decide what task to perform. b. Large and complex computer programs are generally written by only one programmer. c. Computer programs are composed of extremely primitive operations. d. Small computer programs are not documented. 3. What is an example of a typical instruction in a computer program? a. Add up two numbers. b. Lay out a term paper. c. Drive a car. d. Display a fancy font. 4. What does CPU stand for? a. Computer Programming Unit b. Computer Processing Unit c. Central Processing Unit d. Central Programming Unit 5. Which one of the following is NOT a function of a CPU? a. Performing arithmetic operations b. Processing data and controlling programs c. Querying a database d. Fetching and storing data from storage and input devices 6. Which type of storage is made from electronic circuits that can store data? a. compact disk (CD) b. hard disk c. primary storage d. secondary storage 7. Which one of the following memory types provides storage that persists without electricity? a. primary storage b. RAM c. memory d. secondary storage 8. Which one of the following memory types provides storage that is slower and less expensive? Name: Class: Date: testbank -bj-7-ch1 Powered by Cognero Page 2 a. primary storage b. secondary storage c. peripheral device d. the transistor 9. Which type of secondary storage consists of rotating platters coated with a magnetic material? a. hard disk b. solid state drive c. compact disk (CD) d. memory 10. Some computers are self-contained units; others are interconnected through what? a. bus b. networks c. peripheral devices d. power lines 11. Which is an example of a peripheral device? a. the CPU b. primary storage c. motherboard d. speakers 12. Which memory type does not provide persistent storage? a. secondary storage b. hard disk c. primary storage d. DVD 13. Where must program instructions and data reside in order for the CPU to directly read and execute them? a. memory b. bus c. hard disk d. somewhere on the computer network 14. What term is used to refer to the computer instructions that are executed by a CPU? a. virtual machine b. machine code c. high-level code d. instruction set 15. What is the Java Virtual Machine? a. A CPU that runs compiled Java code. b. A library that makes it possible to write portable programs. Name: Class: Date: testbank -bj-7-ch1 Powered by Cognero Page 3 c. A program that simulates a real CPU running compiled Java code. d. A program that translates Java code into machine instructions. 16. What is the term used to refer to Java code that runs in a browser? a. applet b. script c. html d. class 17. What term is used to refer to languages that allow programmers to describe tasks at a higher conceptual level than machine code? a. virtual b. high-level c. sophisticated d. conceptual 18. What tool translates high-level instructions into low level machine code? a. debugger b. assembler c. compiler d. linker 19. What tool translates Java source code into files that contain instructions for the Java Virtual Machine? a. linker b. compiler c. assembler d. interpreter 20. Which statement is true about running a Java program on a different CPU? a. You need different Java source code for each CPU. b. You can take code that has been generated by the Java compiler and run it on different CPUs. c. You need to compile the Java program for each CPU. d. You cannot run the program on a different CPU because Java, being a high-level programming language, is machine dependent. 21. When was Java officially introduced? a. 1991 b. 1995 c. 2000 d. 2005 22. Which statement best describes the portability characteristic of Java? a. The same already -compiled Java programs will run on Windows, UNIX, Linux, or Macintosh operating systems without any change. b. The same Java compiler can be used on many operating systems. Name: Class: Date: testbank -bj-7-ch1 Powered by Cognero Page 4 c. There are only small differences between the Java programming language on different operating systems. d. It is easy to change a Java program so that it will work on different operating systems. 23. No matter which Java development environment you use, what happens to the Java source code in order for a Java program to execute? a. The source code is automatically separated into many files. b. The source code is backed up to a network storage facility. c. A Java compiler converts all uppercase letters to lowercase. d. A Java compiler translates the source code into class files. 24. Why should you set aside time to become familiar with the programming environment? a. The time you spend will prevent data loss without the need for backups. b. The tools needed for Java programming are different from other software. c. Although computer systems vary widely, the Java programming environment is always the same. d. The Java libraries are detailed and extensive. 25. Suppose that a computer virus infects your computer and corrupts the files you were going to submit for your current homework assignment. What precaution could have saved you from a disastrously bad grade for this assignment? a. Defragment the hard drive. b. Purchase an anti-virus program to remove the virus from your computer. c. Make regular backups of all your important files. d. Purchase an extended warranty for your computer. 26. Which statement regarding backup strategies for Java files is correct? a. You should have multiple copies of your source files in different locations. b. You should regularly print out your work so you can retype it in case of data loss. c. You should regularly back up the Java virtual machine instructions to prevent loss of valuable work. d. Your compiler automatically makes backups of your source files. 27. The line public class HelloPrinter indicates which declaration below? a. Declaration of the variable class . b. Declaration of the class HelloPrinter . c. Declaration of the variable public . d. Declaration of the class public . 28. Every Java program consists of one or more of these fundamental building blocks. a. class b. CPU c. applet d. parameter 29. What is the name of the file that contains the Java source code for the public class HelloPrinter ? a. HelloPrinter b. HelloPrinter.java Name: Class: Date: testbank -bj-7-ch1 Powered by Cognero Page 5 c. HelloPrinter.class d. HelloPrinter.txt 30. A __________ contains sequences of programming instructions that describe how to perform a particular task. a. parameter b. label c. variable d. method 31. What term is used to refer to an individual instruction inside a method? a. statement b. constant c. comment d. object 32. In Java, every statement must end with which symbol? a. . b. ) c. ! d. ; 33. What term is used to refer to a sequence of characters enclosed in quotation marks? a. string b. object c. comment d. variable 34. What term is used to refer to values supplied to a method that are needed to carry out its task? a. class b. object c. argument d. comment 35. Arguments supplied to methods are enclosed by which symbols? a. () b. " " c. {} d. // 36. Whenever a method is called in Java, what must be specified? a. program name, method name b. strings, method name c. method name, arguments d. the main method, arguments Name: Class: Date: testbank -bj-7-ch1 Powered by Cognero Page 6 37. What is the syntax for calling the println method on the object System.out ? a. println("Any message").System.out; b. System.out("Any message").println; c. System.out.println("Any message"); d. println(System.out,"Any message"); 38. What is the name of the method in the given method call? System.out.println("Welcome"); a. "Welcome" b. System c. println d. out 39. What is the argument in the given method call? System.out.println("Welcome"); a. out b. println c. "Welcome" d. System 40. What is the output of the following Java statement? System.out.println("4 + 6"); a. 10 b. 46 c. 4 d. 4 + 6 41. What is the output of the following Java statement? System.out.println(4 + 6); a. 4 + 6 b. 4 c. 10 d. 46 42. Which statement is true about the following Java code fragment: System.out.println("Hello!); a. There is a run-time error. Name: Class: Date: testbank -bj-7-ch1 Powered by Cognero Page 7 b. There are no errors. c. There is a compile -time error. d. There are multiple errors. 43. Assuming the programmer wishes to display "Hello!" on the screen, which statement is true about the following Java code fragment: System.out.println("Helo!"); a. There is a run-time error. b. There are no errors. c. There is a compile -time error. d. There are multiple errors. 44. Assuming the programmer wishes to display "Hello!" on the screen, which statement is true about the following Java code fragment: System.out.println("Hello!"); a. There is a run-time error. b. There are no errors. c. There is a compile -time error. d. There are multiple errors. 45. Assuming the programmer wishes to display "Hello!" on the screen, which statement is true about the following Java code fragment: System.out.printn("Helo!"); a. There is a run-time error. b. There are no errors. c. There is a compile -time error. d. There are multiple errors. 46. Assume that the following Java statement is contained in the main method of the class named Hello : System.out.printLine("Hello!"); What is the name of the file generated by the Java compiler? a. Hello.java b. Hello c. No file is generated due to an error. d. Hello.class 47. What is a logic error? a. A violation of the rules of the computer language. Name: Class: Date: testbank -bj-7-ch1 Powered by Cognero Page 8 b. A missing main method. c. A program that is syntactically correct but does not do what it is supposed to do. d. An error that is so severe that it generates an exception. 48. What is the term used to describe an error detected by the compiler that is a violation of the programming language rules? a. logic error b. compile -time error c. run-time error d. typo 49. Other than compile -time error, what is another term used to describe an error detected by the compiler that is a violation of the programming language rules? a. typo b. logic error c. syntax error d. run-time error 50. What is the term used to describe an error causing a program to take an action that the programmer did not intend? a. typo b. run-time error c. compile -time error d. syntax error 51. Other than run-time error, what is another term used to describe an error causing a program to take an action that the programmer did not intend? a. syntax error b. logic error c. mistake d. compile -time error 52. Which statement is true about the following Java statement: System.out.Println("Welcome!"); a. There are multiple errors. b. There are no errors. c. There is a run-time error. d. There is a compile -time error. 53. Assuming the programmer wishes to output the phrase "Hello!", which of the following is true about the following Java statement: System.out.println("Welcme!"); a. There are multiple errors. Name: Class: Date: testbank -bj-7-ch1 Powered by Cognero Page 9 b. There is a run-time error. c. There are no errors. d. There is a compile -time error. 54. Assuming the programmer wishes to output the phrase "Welcome!", Which statement is true about the following Java statement: System.out.println("Welcome!"); a. There are no errors. b. There is a run-time error. c. There are multiple errors. d. There is a compile -time error. 55. Assuming the programmer wishes to output the phrase "Welcome!", which of the following is true about the following Java statement. System.out.Println("Wlcome!"); a. There are no errors. b. There is a compile -time error. c. There is a run-time error. d. There are multiple errors. 56. Assume that the main method of the class named Welcome does not contain any compile -time errors. What is the name of the file generated by the Java compiler? a. Welcome.class b. Welcome.java c. No additional file is generated. d. Welcome 57. Which statement is true about the compilation process? a. The compiler will generate CPU specific instructions even if it detects an error. b. The compiler will generate Java virtual machine instructions even if it detects an error. c. The compiler will stop compiling when it finds the first error. d. The compiler will continue compiling after it finds an error. 58. Who or what is responsible for inspecting and testing the program to guard against logic errors? a. JVM b. programmer c. end-user d. compiler 59. If you get a sequence of error messages from the compiler that are increasingly off track, you should a. check for division by zero Name: Class: Date: testbank -bj-7-ch1 Powered by Cognero Page 10 b. restructure your code to make it more readable c. check for spelling, capitalization, or missing quotation marks d. include more of your code within themain method 60. The error message "cannot find symbol" is usually a good clue that what kind of error has been made? a. logic b. spelling c. run-time d. division by zero 61. A sequence of steps that contains precise instructions for what to do at each step and where to go next is ______________. a. unambiguous b. terminating c. executable d. documented 62. A sequence of steps that can be carried out in practice is ______________. a. unambiguous b. terminating c. executable d. documented 63. A sequence of steps that eventually comes to an end is ______________. a. unambiguous b. terminating c. executable d. documented 64. What is the purpose of the following algorithm? input somenum Repeat the following steps for 14 times input variable1 if variable1 < somenum then somenum = variable1 print somenum a. To search for a particular number among 15 numbers. b. To find the largest among 15 numbers. c. To print out the 15 numbers. d. To find the smallest among 15 numbers. 65. Evaluate the given pseudocode to calculate the efficiency of a vehicle's fuel consumption using the following test Name: Class: Date: testbank -bj-7-ch1 Powered by Cognero Page 11 values, rounded to one decimal place: The trip odometer reading (odometer) = 350 The amount to fill the gas tank (amount) = 12 input odometer input amount outpu t odometer/amount What is the final output? a. 27.7 b. 29.2 c. 34.4 d. 32.3 66. Evaluate the given pseudocode to calculate the weighted score for a student: The homework score (homework) = 95 The weight of homework (hwWeight) = 35% The exam score (exams) = 87 The weight of exams(exWeight) = 65% input homework input hwWeight input exams input exWeight output homework*hwWeight + exams*exWeight What is the final output? a. 89.20 b. 89.80 c. 87.80 d. 92.20 67. Evaluate the given pseudocode to calculate the payment (pmt) with the following test values: The total number of hours worked (working_hours) = 60 The rate paid for hourly work (rate) = 12 input working_hours input rate pmt = working_hours * rate if workin g_hours > 40 then extra_hours = working_hours - 40 extra_pmt = extra_hours * rate pmt = pmt + extra_pmt output pmt Name: Class: Date: testbank -bj-7-ch1 Powered by Cognero Page 12 What is the final output? a. 960 b. 840 c. 240 d. 720 68. What term is used to refer to an informal description of a sequence of steps for solving a problem? a. assembly language instructions b. pseudocode c. machine instructions for a specific CPU d. Java virtual machine instructions 69. What term is used to refer to a sequence of steps for solving a problem that is unambiguous, executable, and terminating? a. documentation b. pseudoprogram c. algorithm d. comments 70. Which of the following options is true about algorithms? a. Algorithms are described informally and can contain ambiguous steps. b. Algorithms are written in a programming language. c. Algorithms can replace the source code in programs. d. You must create an algorithm for a problem before you can create a program to solve the problem. 71. A sequence of steps is unambiguous when ___________________________ a. it will eventually come to an end. b. it is clearly documented. c. it can be carried out in practice. d. there are precise instructions for what to do at each step and where to go next. 72. A sequence of steps is executable when ___________________________ a. it will eventually come to an end. b. it can be carried out in practice. c. it is documented. d. there are precise instructions for what to do at each step and where to go next. 73. A sequence of steps is terminating when ___________________________ a. there are precise instructions for what to do at each step and where to go next. b. it will eventually come to an end. c. it can be documented. d. it can be carried out in practice. 74. What is the purpose of the following algorithm? Name: Class: Date: testbank -bj-7-ch1 Powered by Cognero Page 13 input num Repeat the following steps for 9 times input var1 if var1 > num then num = var1 print num a. To print out the 10 numbers b. To search for a particular number among 10 numbers c. To find the largest among 10 numbers d. To find the smallest among 10 numbers 75. Evaluate the given pseudocode to calculate the efficiency of a vehicle's fuel consumption using the following test values: The trip odometer reading (odometer) = 300 The amount to fill the gas tank (amount) = 15 input odometer input amount output odometer/amount What is the final output? a. 15 b. 10 c. 30 d. 20 76. Evaluate the given pseudocode to calculate the weighted score for a student: The program score (program) = 92 The weight of programs (pgmWeight) = 40% The exam score (exams) = 85 The weight of exams(exWeight) = 60% input program input pgmWeight input exams input exWeight output program*pgmWeight + exams*exWeight What is the final output? a. 89.20 b. 87.80 c. 89.80 Name: Class: Date: testbank -bj-7-ch1 Powered by Cognero Page 14 d. 92.20 77. Evaluate the given pseudocode to calculate the payment (pmt) with the following test values: The total number of hours worked (working_hours) = 50 The rate paid for hourly work (rate) = 10 input working_hours input rate pmt = working_hours * rate if working_hours > 40 then extra_hours = working_hours – 40 extra_pmt = extra_hours * rate pmt = pmt + extra_pmt end of if output pmt What is the final output? a. 540 b. 580 c. 500 d. 600 78. What is the correct order of the steps in the program development process: i. Develop and describe the algorithm. ii. Translate the algorithm into Java. iii. Understand the problem. iv. Compile and test the program. v. Test the algorithm with different inputs. a. iii, i, ii, iv, v b. i, ii, iv, v, iii c. iii, i, v, ii, iv d. i, iii, v, ii, iv 79. Pseudocode must be i. Unambiguous. ii. Syntactically correct code. iii. Readable by a human. iv. Indicative of results of an algorithm. a. i, ii b. i, ii, iii c. i, iii, iv d. ii, iii, iv Name: Class: Date: testbank -bj-7-ch1 Powered by Cognero Page 15 Answer Key 1. c 2. c 3. a 4. c 5. c 6. c 7. d 8. b 9. a 10. b 11. d 12. c 13. a 14. b 15. c 16. a 17. b 18. c 19. b 20. b 21. b 22. a 23. d 24. b 25. c