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EXAM 3 COMPLETED

Your performance was as follows:

You took 4 minutes on this assessment from Fri May 25 2012 12:10:53 GMT+0530 to Fri May 25 2012 12:14:16 GMT+0530.

Total score: 100.00



1.

Consider a Java program that contains two classes, Programmer and Person. The class Programmer is a subclass of the class Person, and both classes define a method sleep. Which of the following statements will be true about the program?



(a) The method sleep of Programmer will override that of Person when the program is executed.
(b) When the method sleep of Programmer is called, the method sleep of Person will be called first.
(c) The method sleep of Person will override that of Programmer when the program is executed.
(d) The program will not compile.

Correct answer is (a)

Your score on this question is: 11.11

Feedback:


See section 3.2, subsection "Overriding Methods," in the course notes.




2.

Consider the following Java program fragment.
import java.applet.Applet;

public class Hello extends Applet {

...

}

The fragment indicates that



(a) Applet is an instance of Hello
(b) Hello is a subclass of Applet
(c) Applet is a subclass of Hello
(d) Hello is an instance of Applet

Correct answer is (b)

Your score on this question is: 11.11

Feedback:


See sections 3.1 and 3.2 in the course notes.




3.

Which of the following kinds of relationships between classes does inheritance describe?



(a) has-a
(b) uses-a
(c) produces-a
(d) is-a-kind-of

Correct answer is (d)

Your score on this question is: 11.11

Feedback:


See section 3.1 "Introduction to Inheritance" in the course notes.




4.

If class A is a subclass of class B, which of the following statements is (are) true?
All public data and methods of class B are available to class A.
All public data and methods of class A are available to class B.



(a) I only
(b) II only
(c) None
(d) I and II

Correct answer is (a)

Your score on this question is: 11.11

Feedback:


See sections 3.1 and 3.2 in the course notes.




5.

Which of the following indicates that class Dog is a subclass of class Animal?



(a) public class Dog extends Animal
(b) public class Animal extends Dog
(c) public class Dog imports Animal
(d) public class Animal imports Dog

Correct answer is (a)

Your score on this question is: 11.11

Feedback:


See sections 3.1 and 3.2 in the course notes.




6.

Which of the following is true concerning the following example class definition?
public class Hello extends Applet { ...
}
Hello is a superclass of Applet
Hello inherits from Applet
Hello is a subclass of Applet



(a) I and II only
(b) II and III only
(c) III only
(d) II only

Correct answer is (b)

Your score on this question is: 11.11

Feedback:
See sections 3.1 and 3.2 in the course notes.



7.

If the following line of code is the beginning of a class definition, then class _____ is being defined, and it is a _____ of class _____.
public class Game extends Applet



(a) Applet, superclass, Game
(b) Game, subclass, Applet
(c) Game, superclass, Applet
(d) Applet, subclass, Game

Correct answer is (b)

Your score on this question is: 11.11

Feedback:
See sections 3.1 and 3.2 in the course notes.



8.

In the following program segment, the call super(len,wid) invokes the constructor for which class?
public class CustomWindow extends MyWindow implements ActionListener

{

public CustomWindow(int len, int wid, Font ft)

{

super(len, wid);

}

}



(a) MyWindow
(b) ActionListener
(c) Font
(d) CustomWindow

Correct answer is (a)

Your score on this question is: 11.11

Feedback:


See section 3.2 "Using Inheritance" in the course notes.




9.

Which of the following Java keywords can be used to invoke a superclass constructor for the class in which it appears?



(a) super
(b) this
(c) protected
(d) extends

Correct answer is (a)

Your score on this question is: 11.11

Feedback:


See Chapter 12, page 504, in the course textbook.




Go to top of assessment.

Total score: 100.00

© Copyright 2011 iCarnegie, Inc. All rights reserved.

EXAM 2

View Assessment Result: Exam 2 Multiple-Choice

Your performance was as follows:

1.

Upon compilation, the source code of a Java class MyClass will be stored in the file _____, and the corresponding byte code will be stored in the file _____.

(a) MyClass.class, MyClass.exe (b) MyClass.java, MyClass.exe (c) MyClass.class, MyClass.java (d) MyClass.java, MyClass.class

Correct answer is

(d)

Your score on this question is:

5.00

Feedback:

See sections 2.1.2 and 2.1.3 in the course notes.

---

2.

Model elements in Java programs that share a common behavior can be grouped into categories called

(a) codes (b) classes (c) programs (d) objects

Correct answer is

(b)

Your score on this question is:

5.00

Feedback:

See Chapter 1, page 3, in the course textbook.

---

3.

In addition to coding, the process of programming model involves which of the following? Evaluation and testing Defining and redefining a problem Planning a solution to a problem

(a) None (b) I only (c) I, II, and III (d) II and III only

Correct answer is

(c)

Your score on this question is:

5.00

Feedback:

All of these are part of the programming process. See section 2.1.6 in the course notes.

---

4.

Valid Java comments include which of the following? /* this is an /* embedded */ comment */ /* this is an // embedded // comment */ // this is a comment */

(a) I only (b) II and III only (c) I and II only (d) I and III only

Correct answer is

(b)

Your score on this question is:

0.00

Feedback:

See section 2.1.3, subsections "The Catfish Class," in the course notes.

---

5.

A Java servlet can obtain an object for sending data to the client of the servlet by calling which of the following methods of HttpServletResponse?

(a) encodeURL (b) setContentType (c) getCharacterEncoding (d) getWriter

Correct answer is

(d)

Your score on this question is:

5.00

Feedback:

See section 2.1.4, subsection "The Welcome Servlet," in the course notes.

---

6.

Which of the statements below correctly constructs an object using the following constructor? Plane(int a, int b, int c) { // code }

(a) p = Plane; (b) p = Plane(1, 2, 3); (c) p = new Plane(1, 2, 3); (d) p = new Plane;

Correct answer is

(c)

Your score on this question is:

5.00

Feedback:

See sections 2.2.4 and 2.2.6 in the course notes. Refer to the manner in which the constructors for the HtmlPage and AlgaeColony classes are implemented.

---

7.

Which of the following is (are) consistent with Java naming conventions regarding capitalization? int numPeople; int Counter; class serviceElevator{}

(a) I and III only (b) None (c) I, II, and III (d) I only

Correct answer is

(d)

Your score on this question is:

5.00

Feedback:

See section 2.2.2, subsection "Mapping English Terms to Java Terms," in the course notes.

---

8.

The following line can be the start of public void paint(Graphics g)

(a) a method definition (b) a variable declaration (c) a class definition (d) a method call

Correct answer is

(a)

Your score on this question is:

5.00

Feedback:

See section 2.2.2 through 2.2.4 in the course notes.

---

9.

In Java, variables declared in the body of a method are known as _____ variables.

(a) instance (b) class (c) public (d) local

Correct answer is

(d)

Your score on this question is:

5.00

Feedback:

See Chapter 4, page 122, in the course textbook.

---

10.

In Java, non-sequential execution of code is achieved by using _____ statements.

(a) ordering (b) branching (c) concurrent (d) control

Correct answer is

(d)

Your score on this question is:

5.00

Feedback:

See sections 2.3.4 and 2.3.5 in the course notes.

---

11.

The type of the number 2.0 in Java can be

(a) int (b) Panel (c) boolean (d) double

Correct answer is

(d)

Your score on this question is:

5.00

Feedback:

See section 2.3.1 in the course notes.

---

12.

A Java Virtual Machine (JVM) is

(a) hardware that interprets Java bytecode (b) a compiler that generates Java bytecode (c) software that interprets Java bytecode (d) a decompiler that creates Java source code from Java bytecode

Correct answer is

(c)

Your score on this question is:

0.00

Feedback:

See section 2.1.2 in the course notes.

---

13.

How many times will the following loop execute? int i; for (i = 0; i < 9; i = i + 1) i = 8;

(a) 1 (b) 2 (c) infinitely many (d) 9

Correct answer is

(a)

Your score on this question is:

5.00

Feedback:

See section 2.3.5 of the course notes.

---

14.

Assume you are given a method with a specification double numbers(); that supplies you with numbers from the user's input. You need to find the first input number from user input that is smaller than 0.5 and put it in the variable x. Which of the following can be used for that purpose? double x = numbers(); while (x <= 0.5) x = numbers(); double x = 0.1; while (x >= 0.5) x = numbers(); double x; for (x = numbers(); x >= 0.5; x = numbers());

(a) II and III only (b) I, II and III (c) III only (d) I only

Correct answer is

(c)

Your score on this question is:

5.00

Feedback:

The first item sets x to the first number greater than 0.5; the second item never gets user input. See section 2.3.5 of the course notes.

---

15.

In Java, for primitives, the assignment operator is the symbol _____ and the equality operator is the symbol _____.

(a) =, == (b) ==, = (c) =, equals() (d) :=, =

Correct answer is

(a)

Your score on this question is:

5.00

Feedback:

See sections 2.3.2 and 2.3.3 in the course notes.

---

16.

Consider the following code fragment. int m = 3; int n = m / 2; What is the value of n?

(a) 1.5 (b) 2 (c) 1 (d) 1.0

Correct answer is

(c)

Your score on this question is:

5.00

Feedback:

Integer division truncates. See section 2.3.2 in the course notes.

---

17.

If T represents the value true and F represents the value false, what does the following expression evaluate to? ! ( ( T || F ) && !F )

(a) There is an error in the expression so the program containing this expression cannot be compiled. (b) The expression cannot be evaluated based on the information presented. (c) false (d) true

Correct answer is

(c)

Your score on this question is:

5.00

Feedback:

Using the precedence of the operators and the parentheses in the expression, it can be evaluated like this: ! ( ( T || F ) && !F ) ! ( ( T ) && T ) ! ( T && T ) ! ( T ) F See section 2.3.3 in the course notes.

---

18.

In Java, the scope of a parameter of a method contains the scope of which of the following?

(a) Instance variables of the method (b) Class variables of the method (c) Local variables of the method (d) Global variables of the method

Correct answer is

(c)

Your score on this question is:

5.00

Feedback:

See section 2.3.1 in the course notes.

---

19.

In the class defined below class MyClass { int age = 19; void myMethod() { int counter; } }

(a) both age and counter are local variables (b) both age and counter are instance variables (c) age is an instance variable and counter is a local variable (d) age is a local variable and counter is an instance variable

Correct answer is

(c)

Your score on this question is:

5.00

Feedback:

See section 2.3.1 of the course notes.

---

20.

Which of the following is a method invocation that retrieves the first element from an instance of class java.util.Vector?

(a) elementAt(0) (b) read(0) (c) elementAt(1) (d) read(1)

Correct answer is

(a)

Your score on this question is:

0.00

Feedback:

See Chapter 9, page 335, in the course textbook.

---

Go to top of assessment.

Total score: 85.00

© Copyright 2011 iCarnegie, Inc. All rights reserved.

EXAM 1 COMPLETED

View Assessment Result: Exam 1 Multiple-Choice

Your performance was as follows:

1.

What does "url" stand for?

(a) Uniform Resource Locator (b) Uniform Requirement Location (c) Universal Resource Locator (d) Underground Racing League

Correct answer is

(a)

Your score on this question is:

5.00

Feedback:

---

2.

In www.google.com; what does "www" stand for?

(a) Wild Wild West (b) World Wide Web (c) World Wild Web (d) We Won't Work

Correct answer is

(b)

Your score on this question is:

5.00

Feedback:

---

3.

How do search engine companies like Google, Microsoft, and Yahoo make money?

(a) users pay a monthly fee for unlimited searching (b) users are billed per search (c) government subsidies (d) selling product advertising on the engine's site

Correct answer is

(d)

Your score on this question is:

5.00

Feedback:

---

4.

What can be some unethical practices on the internet?

(a) Hacking (b) None (c) Both a and b (d) Phishing

Correct answer is

(c)

Your score on this question is:

5.00

Feedback:

---

5.

In the following URL, what is the name of the server? http://trestle.icarnegie.com/ssd1/course.html

(a) ) trestle.icarnegie.com (b) ssd1/course.html (c) http (d) trestle

Correct answer is

(a)

Your score on this question is:

5.00

Feedback:

---

6.

HTML heading tags include which of the following? <H> <H1> <H8>

(a) I, II, and III (b) II and III only (c) I only (d) II only

Correct answer is

(d)

Your score on this question is:

5.00

Feedback:

See section 1.2.3, subsections "Headings, Horizontal Lines, and Preformatted Text," in the course notes.

---

7.

Which of the following is a valid HTML segment that directs Web browsers to display green text?

(a) <color green="true">Text</font> (b) <font green="true">Text</font> (c) <color font="green">Text</font> (d) <font color="green">Text</font>

Correct answer is

(d)

Your score on this question is:

5.00

Feedback:

See section 1.2.3, subsection "Size and Color," of the course notes.

---

8.

The <PRE> tag in HTML indicates the start of

(a) a section intended to be prefixed with line numbers (b) previously loaded image data (c) a paragraph (d) a section of preformatted text

Correct answer is

(d)

Your score on this question is:

5.00

Feedback:

See section 1.2.3, subsections "Headings, Horizontal Lines, and Preformatted Text," of the course notes.

---

9.

Which of the statements is true about the following HTML segment? <a href="www/cnn.com">CNN news</a>

(a) It is incorrect since the URL is missing the protocol. (b) It is incorrect since it does not contain a double slash. (c) It creates a link to the front page of the server cnn.com. (d) It creates a link to the file cnn.com in the folder www.

Correct answer is

(d)

Your score on this question is:

5.00

Feedback:

See section 1.2.4 of the course notes.

---

10.

Consider the following table. Which of the following HTML sequences can be used to lay out the preceding table?

(a) <table> <th> <tr>+</tr> <tr>0</tr><tr>1</tr> </th> <th> <tr>0</tr> <td>0</td><td>1</td> </th> <th> <tr>1</tr> <td>1</td><td>0</td> </th> </table> (b) <table> <td> <tr>+</tr> <tr>0</tr><tr>1</tr> </td> <td> <tr>0</tr> <th>0</th><th>1</th> </td> <td> <tr>1</tr> <th>1</th><th>0</th> </td> </table> (c) <table> <tr> <th>+</th> <th>0</th><th>1</th> </tr> <tr> <th>0</th> <td>0</td><td>1</td> </tr> <tr> <th>1</th> <td>1</td><td>0</td> </tr> </table> (d) <table> <td> <th>+</th> <th>0</th><th>1</th> </td> <td> <th>0</th> <tr>0</tr><tr>1</tr> </td> <td> <th>1</th> <tr>1</tr><tr>0</tr> </td> </table>

Correct answer is

(c)

Your score on this question is:

5.00

Feedback:

See section 1.2.4 of the course notes.

---

11.

Testing each element of your Web page as you add it has the effect of

(a) using less paper (b) saving disk space (c) making it easy to find errors (d) making it easy to use a conventional text editor

Correct answer is

(c)

Your score on this question is:

5.00

Feedback:

See section 1.2.6 of the course notes.

---

12.

Which of the following path formats can be used to specify the value of the href attribute of the <a> tag? An absolute path A relative path

(a) I and II (b) None (c) II only (d) I only

Correct answer is

(a)

Your score on this question is:

5.00

Feedback:

See section 1.2.4 in the course notes.

---

13.

What is the conceptual difference between logical and physical styles?

(a) Logical styles are intended to specify the look of content, whereas physical styles are used to specify the meaning of content. (b) Logical styles are intended to be used for text, whereas physical styles are intended to be used for graphics. (c) Logical styles are intended to specify the meaning of content, whereas physical styles are used to specify the look of content. (d) Logical styles are intended to be used for graphics, whereas physical styles are intended to be used for text.

Correct answer is

(c)

Your score on this question is:

5.00

Feedback:

See section 1.2.3 of the course notes.

---

14.

Logical style tags in HTML include which of the following? <EM> <STRONG> <B>

(a) I and III only (b) I, II, and III (c) II and III only (d) I and II only

Correct answer is

(d)

Your score on this question is:

0.00

Feedback:

See section 1.2.3, subsections "Physical Styles and Logical Styles," of the course notes.

---

15.

When a Web browser submits an HTML form to a Web server, the browser sends

(a) XML-encoded data (b) comma-separated lists (c) encoded name-value pairs (d) ASN.1-encoded data

Correct answer is

(c)

Your score on this question is:

5.00

Feedback:

See section 1.3.3, subsection "Form Submission and Servlets," in the course notes.

---

16.

In the name-value pairs that represent a submitted HTML form, names are separated from values by the character _____, and pairs are separated from one another by the character _____.

(a) =, ? (b) &, = (c) &, ? (d) =, &

Correct answer is

(d)

Your score on this question is:

5.00

Feedback:

See section 1.3.3, subsection "Form Submission and Servlets," in the course notes.

---

17.

Which of the following statements is (are) true of Java servlets? They can produce dynamic responses to client requests. They are invoked directly by clients without involvement by a server.

(a) I and II (b) I only (c) None (d) II only

Correct answer is

(b)

Your score on this question is:

0.00

Feedback:

See section 1.3.2 in the course notes.

---

18.

In an HTML FORM element, the values get and post are the only valid options for which of the following attributes?

(a) action (b) accept (c) enctype (d) method

Correct answer is

(d)

Your score on this question is:

5.00

Feedback:

See section 1.3.1, subsection "The FORM Element," in the course notes.

---

19.

Typically, a request from a client browser is forwarded to a servlet by a

(a) request header (b) cookie (c) Web server (d) response header

Correct answer is

(c)

Your score on this question is:

0.00

Feedback:

See section 1.3.2, subsection "An Overview of Servlets," in the course notes.

---

20.

In the client-side mechanism client-pull, _____ are generated _____.

(a) responses, manually (b) requests, automatically (c) requests, manually (d) responses, automatically

Correct answer is

(b)

Your score on this question is:

0.00

Feedback:

See section 1.3.2, subsection "Server Push-Client Pull," in the course notes.

---

Go to top of assessment.

Total score: 80.00

© Copyright 2011 iCarnegie, Inc. All rights reserved.