AP CSA| Final S2 Exam Review by Mr. B

  Which of the following is a valid constructor declaration for the Cube class?

 

I. public static Cube()

II public void Cube()

III.   public Cube()

IV.   public Cube(int side)

• III and IV only 

• I only

• III only

• II only

• I and II only

What is the exact output of the following code?

 int radius = 3;

 double pi = 3.142;

 double area = pi*( radius * radius );  System.out.print("area ");

 System.out.print(area);

• area 28.278  

• 28.278 28.278

• area 28

• there will be an error because of incompatible data types 

What value is the result of evaluating this expression? 

       (5 * 3 - 4 / 2 ) % 3 

Which of the following paired correctly?

•   <label> : it defines a label for an input element.

• <textarea> : it defines a caption for a<fieldset> element.

• <button> : it defines a clickable button.

• <fieldset> : it defines an HTML form to enter inputs by the user.

What is a subclass ?

• Tests out code and can run with errors  

• Where the class gains attributes and methods of another 

• Argument defined as variables under a function.

• A type a class that is specified under a normal class, inheriting the features of the normal class

An expression is a combination of operands and operators that evaluate to a single value. 4 + 6 = (a)  or 21 - 3  (b)  = 15.0  

• 15%

• 10

• 2.0

• 8

• 17

Which of these relational operators is part of the JOIN operator? Select all that apply.

• UNION

• PRODUCT

• SELECT

• PROJECT

Which of these are part of the rule of entity integrity? Select all that apply.

• Primary keys must have unique tuples.

• Prime attributes must be the first attributes in a table.

• Primary keys can only have one attribute.

• Primary keys cannot have null values.

What is Instance Variables?

• Variables defined in a class, but not in constructors.

• Variables of a class that are shared between its instances.

• Encapsulates instance attributes.

• The blueprint/definer of objects and contain functions, called methods available only to objects of that type.

HTML Links are created with the ________ tag.

• <a href="location"></a>

•   <redirect to page="location"> 

• <link rel="stylesheet" href="location"> 

•   <link =”style”>