Test: Java Fundamentals Midterm Exam Review your answers, feedback, and question scores below. An asterisk (*) indicates a correct answer. Section 2 (Answer all questions in this section) 1 . In Alice, when a new procedure is declared, all subclasses of the superclass will inherit the procedure. True or false? Mark for Review (1) Points True (*) False Correct 2 . A scenario gives the Alice animation a purpose. True or false? Mark for Review (1) Points True (*) False Correct 3 . In Alice, objects inherit the characteristics of their: Mark for Review (1) Points Code Project Class (*) Program Correct
Welcome message from author
This document is posted to help you gain knowledge. Please leave a comment to let me know what you think about it! Share it to your friends and learn new things together.
Transcript
Test: Java Fundamentals Midterm ExamReview your answers, feedback, and question scores below. An asterisk (*) indicates a correct answer.
Section 2(Answer all questions in this section)
1.In Alice, when a new procedure is declared, allsubclasses of the superclass will inherit the procedure. True or false?
Mark forReview
(1) Points
True (*)False
Correct
2.A scenario gives the Alice animation a purpose.True or false?
Mark forReview
(1) Points
True (*)False
Correct
3.In Alice, objects inherit the characteristics of their:
Mark forReview
(1) Points
CodeProjectClass (*)Program
Correct
4.From your Alice lessons, variables are fixed and cannot be changed. True or false?
Mark forReview
(1) Points
TrueFalse (*)
Correct
5.A variable is a named location inside the computer's memory; once there, the information can be retrieved and changed. True or false?
Mark forReview
(1) Points
True (*)False
Correct
Section 2(Answer all questions in this section)
6.Functions answer questions about an object, such as its height, width, depth and even distance to another object. True or false?
Mark forReview
(1) Points
True (*)False
Correct
7.Which of the following would not be an argument in an Alice programming instruction that commands a person object to move forward 2 meters?
Mark forReview
(1) Points
Number of seconds to execute the
programming instructionDirection to moveDistance to move forwardPerson's height (*)
Correct
8.From your Alice lessons, functional decomposition is the process of taking a complex problem or process and growing it intolarger parts that are easier to manage. True or false?
Mark forReview
(1) Points
TrueFalse (*)
Correct
9.From your Alice lessons, if you examined a science process that had many steps, which of the following is a way that you could apply functional decomposition to this process?
Mark forReview
(1) Points
1. Present the problem as an animation. 2. Further refine and define the tasks needed for each high level step. 3. Identify the high level steps for the science concept.1. Identify the detailed steps for the science concept. 2. Present the problem as an animation.1. Present the problem as an animation.1. Identify the high level steps for the science concept.2. Further refine and define the tasks needed for each high level step.3. Present the problem as an animation. (*)
Correct
10.If you need to repeat a group of Java statements many times, which Java construct should you use?
Mark forReview
(1) Points
(Choose all correct answers)
repeat...untildo while loop (*)while loop (*)if
Incorrect. Refer to Section 2 Lesson 14.
Section 2(Answer all questions in this section)
11.
In Java, a function is a method that returns a value. True or false?
Mark forReview
(1) Points
True (*)False
Correct
12.
A loop can be infinite (continue forever) or conditional (stops upon a condition). True or false?
Mark forReview
(1) Points
True (*)False
Correct
1Which of the following is not a valid primitive Mark for
3.type in Java? Review
(1) Points
booleanString (*)longintdouble
Correct
14.
What is the output produced by the following code?
Mark forReview
(1) Points
j is 5k is 5 (*)j is 10 j is 5 k is 5j is 10k is 10j is 15k is 15
Correct
15.
An Alice event is considered what? Mark forReview
(1) Points
A party with at least 20 people.An object's orientation.Error handling.A keystroke or mouse click. (*)
Correct
Section 2(Answer all questions in this section)
16.In Alice, how is a one-shot procedure different from procedures in the Code editor?
Mark forReview
(1) Points
One-shot procedures are only available for acting objects, while procedures are available for all objects.One-shot procedures are available in the Code editor, while procedures are availablein the Scene editor.A one-shot procedure executes only one timeto re-position the object, while proceduresin the Code editor execute every time the Run button is clicked. (*)All of the above
Correct
17.In Alice, which of the following programming statements moves the butterfly forward, doublethe distance to the tree?
Mark forReview
(1) Points
this.Butterfly move forward {this.ButterflygetDistanceTo this.Tree * 2} (*)this.Butterfly move backward {this.Butterfly getDistanceTo this.Tree * 2}this.Butterfly move backward {this.Butterfly getDistanceTo this.Tree / 2}this.Butterfly move forward {this.ButterflygetDistanceTo this.Tree / 2}
Correct
18.In Alice, which of the following programming statements moves the cat backward, half the distance to the bird?
Mark forReview
(1) Points
this.Cat move backward {this.Bird getDistanceTo this.Cat / 2}this.Cat move forward {this.Bird getDistanceTo this.Cat / 2}this.Bird move forward {this.Bird getDistanceTo this.Cat / 2}this.Cat move backward {this.Cat getDistanceTo this.Bird / 2} (*)
Correct
19.Which of the following actions would require acontrol statement to control animation timing?
Mark forReview
(1) Points
(Choose all correct answers)
A biped object walking. (*)A rock object turning.A fish swimming. (*)A bird flying. (*)
Correct
20.In Alice, the procedures' arguments allow the programmer to adjust the object, motion, distance amount, and time duration. True or false?
Mark forReview
(1) Points
True (*)False
Correct
Section 2(Answer all questions in this section)
21.In Alice, Do In Order and Do Together: Mark for
Review (1) Points
Are move statementsAre control statements (*)Are complex statementsNone of the above
Correct
22.The first step to using a top-down approach toprogramming is to create a table to align the storyboard steps to the programming instructions. True or false?
Mark forReview
(1) Points
TrueFalse (*)
Incorrect. Refer to Section 2 Lesson 4.
Section 3(Answer all questions in this section)
23.When designing a game in Greenfoot, it helps to define the actions that will take place in a textual storyboard. True or false?
Mark forReview
(1) Points
True (*)False
Correct
24.Using the Greenfoot IDE, which of the following programming statements tells the object to turn 38 degrees?
Mark forReview
(1) Points
move():move(2);turn(38); (*)turn(38):
Correct
25.Which method is used to play sound in your Greenfoot game?
Mark forReview
(1) Points
getSound methodfindSound methodplaySound method (*)importSound method
Correct
Section 3(Answer all questions in this section)
26.
From your Greenfoot lessons, an instance inherits all of the characteristics of the class, and thosecharacteristics cannot be changed. True or false?
Mark forReview
(1) Points
TrueFalse (*)
Correct
27.
In Greenfoot, a subclass is created by right-clicking on a superclass. True or false?
Mark forReview
(1) Points
True (*)False
Correct
28.
From your Greenfoot lessons, which of the following is an example of changing test data during a Q/A test cycle?
Mark forReview
(1) Points
Use a different operating system.Use the mouse instead of the keyboard.Use symbols instead of numbers. (*)All of the above.
Correct
29.
From your Greenfoot lessons, which line of code ismissing something?
Mark forReview
(1) Points
13 (*)456
Correct
30.
The image below is an example of what Greenfoot construct?
Mark forReview
(1) Points
Method (*)ConstructorConditionalClass
Correct
Section 3(Answer all questions in this section)
31.From your Greenfoot lessons, if the condition in an if-statement is true, the first code segment is executed. True or false?
Mark forReview
(1) Points
True (*)False
Correct
32.From your Greenfoot lessons, source code is written in the Code editor. True or false?
Mark forReview
(1) Points
True (*)False
Correct
33.From your Greenfoot lessons, when does an if-else statement execute it's second code segment?
Mark forReview
(1) Points
When a random number is less than 10.When an instance is created.After the first code segment is executed.If a condition is false. (*)If a condition is true.
Correct
34.From your Greenfoot lessons, which of the following comparison operators represents "greater than"?
Mark forReview
(1) Points
> (*)<
= =! =
Correct
35.From your Greenfoot lessons, which of the following is not a characteristic of a static method?
Mark forReview
(1) Points
Belongs to a class itselfBelongs to an instance itself (*)Available for other classes to use with dotnotationSignature contains the word staticIs a method
Incorrect. Refer to Section 3 Lesson 5.
Section 3(Answer all questions in this section)
36.From your Greenfoot lessons, which axes definean object's position in a world?
Mark forReview
(1) Points
(Choose all correct answers)
x (*)zy (*)w
Correct
37.From your Greenfoot lessons, abstraction techniques can only be used once in a class's source code. True or false?
Mark forReview
(1) Points
TrueFalse (*)
Correct
38.In Greenfoot, we can use the act method in theclass to automatically create the Actor instances when the world is initialized. True or false?
Mark forReview
(1) Points
TrueFalse (*)
Correct
39.We can use the Actor constructor to automatically create Actor instances when the Greenfoot world is initialized. True or false?
Mark forReview
(1) Points
TrueFalse (*)
Correct
40.In Greenfoot, a defined variable is a variablethat is defined in an instance. True or false?
Mark forReview
(1) Points
TrueFalse (*)
Incorrect. Refer to Section 3 Lesson 8.
Section 3(Answer all questions in this section)
41.In Greenfoot, a way to have all subclasses of a superclass inherit a method is by adding the
Mark for
method to the superclass. True or false? Review (1) Points
True (*)False
Correct
42.Use your Greenfoot knowledge to answer the question. One reason to write a defined methodin a class is to change the behavior of the class. True or false?
Mark forReview
(1) Points
TrueFalse (*)
Incorrect. Refer to Section 3 Lesson 6.
43.Use your Greenfoot knowledge: An array object holds a single variable. True or false?
Mark forReview
(1) Points
TrueFalse (*)
Correct
44.From your Greenfoot lessons, which symbol represents string concatenation?
Mark forReview
(1) Points
Symbol &Symbol <Symbol =Symbol + (*)
Correct
45.From your Greenfoot lessons, what is a loop? Mark for
Review (1) Points
A statement that executes one segment of code.A statement that can execute a section of code multiple times. (*)A statement that can execute a section of code one time.A statement that can execute a method multiple times.
Incorrect. Refer to Section 3 Lesson 10.
Section 3(Answer all questions in this section)
46.In Greenfoot, what happens if the end to a while loop isn't established?
Mark forReview
(1) Points
The code will keep executing and will neverstop. (*)The code will execute once and then stop, due to controls in Greenfoot.The code will prompt you to enter a loop counter.The code will not execute.
Correct
47.From the Greenfoot IDE, where are inherited methods located?
Mark forReview
(1) Points
In the computer networkIn the Greenfoot image gallery
In the Scene editorIn the documentation (*)
Correct
48.From your Greenfoot lessons, when a method needs additional data to perform a task, this data comes from parameters. True or false?
Mark forReview
(1) Points
True (*)False
Correct
49.In the Greenfoot IDE, which of the following are components of a parameter?
Mark forReview
(1) Points
(Choose all correct answers)
Parameter type (*)Parameter returnParameter name (*)Parameter methodParameter void
Correct
50.In Greenfoot, a variable can be saved and accessed later, even if the instance no longerexists. True or false?
Mark forReview
(1) Points
TrueFalse (*)
Correct
Related Documents
