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Consider the network shown in Figure 14.22 (ii), and assume that the two telescopes work identically. N {1, 2, 3} and M 1 , M 2 {0, 1, 2, 3, 4}, with the symbolic CPTs as described in Exercise 14.12.... This exercise explores the stationary distribution for Gibbs sampling methods. a. The convex composition [, q 1 ; 1 , q 2 ] of q 1 and q 2 is a transition probability distribution that first chooses... Arguments to methods always appear within ____________. a. Parentheses b. Double quotation marks c. Single quotation marks d. Curly braces You save text files containing Java source code using the file extension ____________. a. .java b. .class c. .txt d. .src Which of the following elements is not required in a variable declaration? a. A type b. An identifier c. An assigned value d. A semicolon The assignment operator in Java is _____________. a. = b. == c. := d. :: A boolean variable can hold _____________. a. Any character b. Any whole number c. Any decimal number d. The value true or false The value 137.68 can be held by a variable of type _____________. a. int b. float c. double d. Two of these are correct. An escape sequence always begins with a(n) _____________. a. e b. Forward slash c. Backslash d. Equal sign Which Java statement produces w on one line and xyz on the next line? a. System.out.println(wxyz); b. System.out.println(w + xyz); c. System.out.println(w xyz); d. System.out.println(w x y z); Economists often make use of an exponential utility function for money: U(x) = e x/R , where R is a positive constant representing an individuals risk tolerance. Risk tolerance reflects how likely an... In Java, what is the value of 3 + 7 * 4 + 2? a. 21 b. 33 c. 42 d. 48 Which assignment is correct in Java? a. double money = 12; b. double money = 12.0; c. double money = 12.0d; d. All of the above are correct. Which assignment is correct in Java? a. char aChar = 5.5; b. char aChar = W; c. char aChar = '*'; d. Two of these are correct. This exercise is concerned with filtering in an environment with no landmarks. Consider a vacuum robot in an empty room, represented by an nmrectangular grid. The robots location is hidden; the only... Garden Glory is a partnership that provides gardening and yard maintenance services to individuals and organizations. Garden Glory is owned by two partners. They employ two office administrators and... In each case, determine the problem and fix the application. After you correct the errors, save each file using the same filename preceded with Fix. For example, DebugTwo1.java will become... A public static method named computeSum() is located in ClassA. To call the method from within ClassB, use the statement _____________. a. ClassA.computeSum(); b. ClassB(computeSum()); c.... The method public static boolean testValue(int response) returns _____________. a. No value b. An int value c. A boolean value d. You cannot determine what is returned. A structure that allows repeated execution of a block of statements is a ____________. a. Cycle b. Ring c. Loop d. Band A loop that never ends is a(n) ____________loop. a. Infinite b. Iterative c. Structured d. Illegal To construct a loop that works correctly, you should initialize a loop control ____________. a. Condition b. Constant c. Structure d. Variable What is the output of the following code? b = 3; while(b < 6) { System.out.print(b + " "); b = b + 1; } a. 3 b. 3 4 5 c. 3 4 5 6 d. 3 3 3 3 3 3 If m = 9, then after n = m++, the value of m is ____________. a. 8 b. 9 c. 10 d. 11 If m = 9, then after n = m++, the value of n is ____________. a. 8 b. 9 c. 10 d. 11 If j = 5 and k = 6, then the value of j++ == k is ____________. a. 5 b. 6 c. True d. False You must always include ____________ in a for loops parentheses. a. Two semicolons b. Three semicolons c. Two commas d. Three commas What does the following program segment output? d = 0; do { System.out.print(d + " "); d++; } while (d < 2); a. 0 b. 0 1 c. 0 1 2 d. Nothing Suppose that you declare two String objects as: String word1 = new String("happy"); String word2 = new String("happy"); The value of word1.equals(word2) is ____________. a. True b. False c. Illegal... Eliza is a famous 1966 computer program written by Joseph Weizenbaum. It imitates a psychologist (more specifically, a Rogerian therapist) by rephrasing many of a patients statements as questions and... Write an application that contains an array of 10 multiple-choice quiz questions related to your favorite hobby. Each question contains three answer choices. Also create an array that holds the... In each case, determine the problem and fix the program. After you correct the errors, save each file using the same filename preceded with Fix. For example, DebugEight1.java will become... Employing inheritance reduces errors because ____________. a. Subclasses have access to fewer data fields b. Subclasses have access to fewer methods c. Methods that have been created in the... Which of the following choices is the best example of a parent class/child class relationship? a. BodyOfWater/River b. Apple/Banana c. Spaniel/Dog d. Sparrow/Bird A class named Building has a public, nonstatic method named getFloors(). If School is a child class of Building, and modelHigh is an object of type School, which of the following statements is valid?... In Java, the concept of keeping data private is known as ____________. a. Polymorphism b. Concealing fields c. Data deception d. Information hiding When a parent class contains a static method, child classes ____________ override it. a. Frequently b. Seldom c. Must d. Cannot Parent classes are ____________ than their child classes. a. Less specific b. More specific c. Easier to understand d. More cryptic Abstract classes differ from other classes in that you ____________. a. Must not code any methods within them b. Must instantiate objects from them c. Cannot instantiate objects from them d. Cannot... Abstract classes can contain ____________. a. Abstract methods b. Nonabstract methods c. Both of the above d. None of the above An abstract class Dwelling has two subclasses, SingleFamily and MultiFamily. None of the constructors for these classes requires any arguments. Which of the following statements is legal? a. Dwelling... Which of the following statements is true? a. Superclass objects are members of their subclass. b. Superclasses can contain abstract methods. c. You can create an abstract class object using the new... When you create a ____________ in Java, you create a variable name in which you can hold the memory address of an object. a. Field b. Reference c. Recommendation d. Pointer An applications ability to select the correct subclass method to execute is known as ____________ method binding. a. Polymorphic b. Intelligent c. Early d. Dynamic Which statement creates an array of five references to an abstract class named Currency? a. Currency[] = new Currency[5]; b. Currency[] currencyref = new Currency[5]; c. Currency[5] currencyref = new... You ____________ override the toString() method in any class you create. a. Cannot b. Can c. Must d. Must implement StringListener to The Object class equals() method takes ____________. a. No arguments b. One argument c. Two arguments d. As many arguments as you need Assume that the following statement appears in a working Java program and that the equals() method has been overridden correctly in things class: if(thing.equals(anotherThing)) x = 1; You know that... The Object class equals() method considers two object references to be equal if they have the same ____________. a. Value in all data fields b. Value in any data field c. Data type d. Memory address Each Java subclass has the ability to inherit from ____________ parent class(es). a. Zero b. One c. Two d. Any number of The alternative to multiple inheritance in Java is known as a(n) ____________. a. Superobject b. Abstract class c. Interface d. None of the above When you create a class that uses an interface, you include the keyword ____________ and the interfaces name in the class header. a. interface b. implements c. accoutrements d. listener An abstract class Employee has two subclasses, Permanent and Temporary. The Employee class contains an abstract method named setType(). Before you can instantiate Permanent and Temporary objects,... You can instantiate concrete objects from a(n) ____________. a. Abstract class b. Interface c. Either a or b d. Neither a nor b In Java, a class can ____________. a. Inherit from one abstract superclass at most b. Implement one interface at most c. Both a and b d. Neither a nor b You created a Quiz class that contains an array of 10 multiplechoice questions to which the user was required to respond with an A, B, or C. At the time, you knew how to handle the users response if... A jframe is a descendant of each of the following classes except the ____________ class. A. Component B. Container C. Jar D. Window Unlike a window, a jframe ____________. A. Has a title bar and border B. Can be made visible C. Can have descendants D. Can hold other objects When a user closes a jframe, the default behavior is for ____________. A. The jframe to close and the application to keep running b. The jframe to be hidden and the application to keep running c. The... Suppose that you create an application in which you instantiate a JFrame named frame1 and a JLabel named label1. Which of the following statements within the application adds label1 to frame1? a.... The arguments required by the font constructor include all of the following except ____________. A. Typeface b. Mode c. Style d. Point size Within an event-driven program, a component on which an event is generated is the ____________. A. Performer B. Listener C. Source D. Handler A class that will respond to button-press events must use which phrase in its header? a. Import java.event b. Extends action c. Extends j frame d. Implements action listener A JFrame contains a JButton named button1 that should execute an actionPerformed() method when clicked. Which statement is needed in the JFrame class? a. addActionListener(this); b.... A class can implement ____________. A. One listener B. Two listeners C. As many listeners as it needs D. Any number of listeners as long as they are not conflicting listeners When you write a method that reacts to JCheckBox changes, you name the method ____________. a. itemStateChanged() b. actionPerformed() c. checkBoxChanged() d. Any legal identifier you choose If a class contains two components that might each generate a specific event type, you can determine which component caused the event by using the ____________ method. a. addActionListener() b.... Figure 13-32 is an activity diagram for the use case Return books in the university library system. Do the following: a. Develop a first-cut sequence diagram that only includes the actor and problem... Perform the following unsigned multiplication in binary using a minimum number of bits required for each decimal number using pencil and paper method: 12 x 52 Find the odd parity bit for the following binary message to be transmitted: 10110000. Repeat Problem 2.20 using repeated addition. Data From Problem 20 Perform the following unsigned multiplication in binary using a minimum number of bits required for each decimal number using pencil... Figure 13-33 is a fully developed use case description for the use case Receive new book in the university library system. Do the following: a. Develop a first-cut communication diagram that only... For the format used in Exercise 5.19, what decimal number is represented by each of the following numbers in floating point format? a. C2F00000 16 b. 3C540000 16 Data from Exercise 5.19 Convert the... Draw a logic diagram to implement F = ABCDE using only 3-input AND gates. Using truth tables, express each one of the following functions and their complements in terms of sum of minterms and product of maxterms: (a) F = ABC + ABD + A B C + ACD (b) F = (W+ X + Y)(WX + Y)... Minimize each of the following functions using a K-map: (a) F(A, B, C) = m(0, 1, 4, 5) (b) F(A, B, C) = m(0, 1, 2, 3, 6) (c) F(X, Y, Z) = m(0, 2, 4, 6) Minimize each of the following expressions for F using a K-map. (a) F(A,B,C) = BC + ABC + ABC (b) F(A,B,C) = ABC + BC (c) F(A,B,C) = AC + A(BC + BC) Using your solution to problem 8, do the following: a. Add the view layer classes and the data access classes to your diagram. b. Develop a package diagram showing a three layer solution with view... Figure 13-36 is a fully developed use case description for the use case Print patient invoices in the dental clinic system. Do the following: a. Develop a first-cut communication diagram that only... In Chapter 10, we identified these four subsystems: Customer account subsystem (such as customer account) Pickup request subsystem (such as sales) Package delivery subsystem (such as order... What is the three-character extension appended to solution filenames in Visual Basic? a. .prg b. .sln c. .src d. .vbs Explain the difference between a forms Text property and its Name property. Define the term syntax. How do you verify the name of the startup form? Which of the following statements is false? a. The text contained in an identifying label should be left-aligned within the label. b. An identifying label should be positioned either above or to the... What is the id used for text box names? A. Tex B. Text C. Txt D. None of the above. What is the ID used for label control names? a. lab b. lal c. lbe d. None of the above. Label controls that display program output typically have their BorderStyle property set to _____________________. a. BorderSingle b. Fixed3D c. FixedSingle d. None Create a Windows Forms application. Use the following names for the project and solution, respectively: OnYourOwn Project and OnYourOwn Solution. Save the application in the VB2017\Chap01 folder.... Define sentence capitalization. Listed below are the five steps for planning a Windows Forms application. Put the steps in the proper order by placing a number (1 through 5) on the line to the left of the step.... Which of the following should have their names changed to more meaningful ones? A. All controls that will be coded B. All controls that will be referred to in code C. The form D. All of the above. Which flowchart symbol represents a processing task? a. Circle b. Oval c. Parallelogram d. Rectangle The expression intNum * intNum * intNum is equivalent to which of the following expressions? a. intNum ^ 3 b. intNum * 3 c. intNum ^ 2 * intNum d. Both a and c. What is the result of the following expression: 3 * 5 \ 2 + 30 / 5? a. 7.5 b. 13 c. 13.5 d. None of the above. Create an application that calculates and displays the percentage of students receiving a grade of P (for Pass) and the percentage of students receiving a grade of F (for Fail). Before creating your... Which of the following is a computer memory location whose value does not change during run time? A. Literal B. Named constant C. Static constant D. Variable If Option Strict is set to On, which of the following statements assigns the sum of two Integer variables to the Text property of the lblTotal control? a. lblTotal.Text = (intN1 + intN2).ToString b.... Which of the following statements prevents data loss due to implicit type conversions? a. Option Convert Off b. Option Explicit On c. Option Implicit Off d. Option Strict On Evaluate the following expression: 13 > 12 OrElse 6 < 5. a. True b. False
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