IB Computer Science Option D - OOP (SL) - Statistics

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General Stats

This quiz has been taken 181 times
The average score is 19 of 42

Answer Stats

Definition	Term	% Correct
"General blueprint"/Template for creating above. Example: Door	Class	88%
Abstract entity that has data (properties and attributes) and can perform actions/methods.	Object	86%
Holds any value from -2^31 to (2^31)-1, inclusive	int	83%
Only holds two conditions: true or false.	Boolean	80%
Numbers with decimal or fractional values.	Real number	69%
Child/Subclass is a specialized form of parent/superclass, i.e. child/subclass has all data and actions/methods of parent/superclass; code will not have to be rewritten. Example: Student is a Person	Inheritance/Is a(n)	67%
Series of characters. Not really a primitive data type but a reference class	String	67%
Runs by: 1 - Declaring and initializing control variable, 2 - Checking if boolean expression is true (runs if true, terminates otherwise), 3 - After code is run, control variable is updated, 4 - Repeat 2. Common example: (int i = 0; i < n; i++)	{for} loop	66%
Any class can access it	public	64%
Runs if boolean expression evaluates to true.	{while} loop	64%
Can only be accessed by class defining it	private	63%
Whole numbers. Represented by int or long, for example.	Integer	61%
Name of information passed to method	Parameter	56%
When called, modifies data value of object.	{Mutator} method	55%
When called, reads specific data value of object.	{Accessor} method	54%
Represents Unicode character	char	54%
Can represent decimals	double	52%
When multiple methods have same name but with different parameters (static), or when subclass overrides method of its superclass such that new method has different functions (dynamic).	Polymorphism	50%
Collections of pre-written classes that can be used by programmer while developing program.	Libraries of objects	48%
Holds any value from -2^63 to (2^63)-1, inclusive	long	46%
Belongs to class instead of specific instance; all objects share same value.	static	45%
Special methods that allow creation of instantiations of objects to be created	Constructor	44%
Inclusion of both data and actions/methods into single component; access to such data and actions from outside of class is thereby restricted.	Encapsulation	44%
Above condition + subclasses	protected	41%
One object depends on other objects, cannot function otherwise; this increases maintenance overheads. Represented with dashed arrow. Example: Vehicle uses an Engine	Dependency/Uses	39%
One object belongs to another object and none other. Example: Department has a Teacher, who cannot belong to another department unless this Department no longer exists.	Aggregation/Has a(n)	38%
Value passed onto method via above	Argument	38%
Represents classes as three compartments: Name, data/variables, actions/methods. Also depicts connections between multiple classes.	UML class diagram	34%
"Inherits from"	extends	32%
Specific objects of above. Example: Screen door	Instantiation	30%
Dividing complex and large program into smaller sub-programs that can be implemented and tested on their own. These sub-programs may be reused in other programs.	Modularity	27%
Identifies an entity (as name suggests). Examples: name, gender, age	Identifier	26%
Value that is passed back when method is called	Return value	24%
Declared inside blocks/scope of code such as in methods/actions or loops.	Local variable	23%
Breaking down problem into related objects in order to reduce complexity	Decomposition	22%
Keyword that serves as basic building block. Examples: char, int, double, boolean	Primitive	22%
Includes method name, parameters, and types. Example: setPrice(int price)	Signature	22%
Values of data from class unique to each object. Example: age	Instance variable	21%
Contrary to solo developer, can handle larger projects with more ideas but effective communication is required.	Programming team	16%
Examples include support for non-English text, date and time formatting, complex symbols, and localized content.	Internationalization	11%
Data items passed to and from actions/methods. Can only be accessed inside the method that declares it.	Parameter variable	8%
Holds fixed number of elements of same type (length is established during array initialization). Example: int[] ages = new int[10];	Static array	7%

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