Ics Practice Quiz 2 - Java
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Introduction to Computer Science practice java quiz
- 1.
What will happen?The turtle starts at it's original position. A setPosition command is used and nothing else.
- A.
The turtle will do nothing
- B.
The turtle will move to the new position
- C.
The turtle will draw a line to the new position
Correct Answer
C. The turtle will draw a line to the new positionExplanation
The turtle will always leave a mark when it moves unless you use penUp() and penDwn().Rate this question:
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- 2.
What will happen?for(int i=0; i<4; i++) { forward(50); right(90); }setDisplayColor(Color.blue);
- A.
You will see a square with blue background.
- B.
You will see four squares on a blue background.
- C.
You will only see a blue background.
- D.
Nothing will happen.
Correct Answer
C. You will only see a blue background.Explanation
Since setDisplayColor came after the loop (that created a square) it places a block of color over whatever was drawn beforehand. You need to place setDisplayColor first.Rate this question:
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- 3.
Explain what the following code will do.int h=0;while(h<10){ int i=0; while( i<4) { forward(50); right(90); i++; } h++;}
- 4.
What does the following code create:forward(50);right(90);forward(100);right(90);forward(50);right(90);forward(100);
Correct Answer
rectangle
a rectangleExplanation
a rectangleRate this question:
- 5.
What is missing from the following code?int 1=0;while i<45{forward(20);left(45);i++;}
Correct Answer
parentheses
the opening and closing parentheses
()Explanation
Its missing the parentheses around the while's true/false statement: while(iRate this question:
- 6.
Which of the following is correct
- A.
SetpenColor(Color.blue)
- B.
SetDisplay(Color.orange);
- C.
SetDisplayColor(blue);
- D.
SetPenColor(Color.gray);
Correct Answer
D. SetPenColor(Color.gray);Explanation
A) the P in not capitalized
B) Color is missing in setDisplayColor
C) Color is missing in Color.blueRate this question:
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- 7.
Which of the following are the basic drawing commands?
- A.
SetPenWidth(); forward(); backward(); right();
- B.
Forward(); backward(); setHeading(); setPostion();
- C.
Forward(); backward(); left(); right();
- D.
SetPenColor(); backward(); right(); forward();
Correct Answer
C. Forward(); backward(); left(); right();Explanation
The basic drawing commands are the actions that allow the user to move the pen in different directions and change its position. The commands "forward()" and "backward()" are used to move the pen forward or backward, while "left()" and "right()" are used to rotate the pen in the respective directions. These commands are essential for creating different shapes and patterns in a drawing.Rate this question:
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- 8.
What does this create?penUp();forward(100);right(90);forward(50);right(90);forward(100);right(90);forward(50)
- A.
A rectangle
- B.
A square
- C.
Some lines
- D.
Nothing
Correct Answer
D. NothingExplanation
The penUp makes the turtle not leave any marksRate this question:
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- 9.
What comes at the end of a command?
- A.
Semi-colon
- B.
Colon
- C.
Curly bracket / brace
- D.
Parentheses
Correct Answer
A. Semi-colonExplanation
every command ends with a semicolonRate this question:
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- 10.
Write the code for making a triangle. You do not need to worry about the absolute correct angles. Just type in the basic drawing commands.
- 11.
Create the code for making a circle. You must use one of the loop codes.
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Apr 09, 2024Quiz Edited by
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Oct 15, 2009Quiz Created by
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