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

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General Stats
Answer Stats
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General Stats

This quiz has been taken 145 times
The average score is 16 of 42

Answer Stats

Definition	Term	% Correct
"General blueprint"/Template for creating above. Example: Door	Class	85%
Abstract entity that has data (properties and attributes) and can perform actions/methods.	Object	82%
Holds any value from -2^31 to (2^31)-1, inclusive	int	80%
Only holds two conditions: true or false.	Boolean	77%
Numbers with decimal or fractional values.	Real number	63%
Series of characters. Not really a primitive data type but a reference class	String	63%
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	61%
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)	59%
Runs if boolean expression evaluates to true.	{while} loop	59%
Any class can access it	public	58%
Can only be accessed by class defining it	private	57%
Whole numbers. Represented by int or long, for example.	Integer	54%
Can represent decimals	double	52%
Represents Unicode character	char	51%
Name of information passed to method	Parameter	51%
When called, modifies data value of object.	{Mutator} method	47%
When called, reads specific data value of object.	{Accessor} method	44%
Holds any value from -2^63 to (2^63)-1, inclusive	long	44%
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	43%
Collections of pre-written classes that can be used by programmer while developing program.	Libraries of objects	42%
Belongs to class instead of specific instance; all objects share same value.	static	41%
Special methods that allow creation of instantiations of objects to be created	Constructor	38%
Above condition + subclasses	protected	37%
Value passed onto method via above	Argument	33%
Inclusion of both data and actions/methods into single component; access to such data and actions from outside of class is thereby restricted.	Encapsulation	33%
One object depends on other objects, cannot function otherwise; this increases maintenance overheads. Represented with dashed arrow. Example: Vehicle uses an Engine	Dependency/Uses	30%
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)	28%
"Inherits from"	extends	28%
Represents classes as three compartments: Name, data/variables, actions/methods. Also depicts connections between multiple classes.	UML class diagram	25%
Specific objects of above. Example: Screen door	Instantiation	24%
Declared inside blocks/scope of code such as in methods/actions or loops.	Local variable	20%
Value that is passed back when method is called	Return value	20%
Breaking down problem into related objects in order to reduce complexity	Decomposition	19%
Identifies an entity (as name suggests). Examples: name, gender, age	Identifier	16%
Includes method name, parameters, and types. Example: setPrice(int price)	Signature	16%
Values of data from class unique to each object. Example: age	Instance variable	15%
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	14%
Keyword that serves as basic building block. Examples: char, int, double, boolean	Primitive	14%
Contrary to solo developer, can handle larger projects with more ideas but effective communication is required.	Programming team	9%
Examples include support for non-English text, date and time formatting, complex symbols, and localized content.	Internationalization	5%
Holds fixed number of elements of same type (length is established during array initialization). Example: int[] ages = new int[10];	Static array	5%
Data items passed to and from actions/methods. Can only be accessed inside the method that declares it.	Parameter variable	3%