Yr 13 AQA A Level Computer Science - revision

What is the difference between a subroutine and a function?

• They are the same thing

• A subroutine passes values back out to the program, a function does not

• A function passes values back out to the program, a subroutine does not

• A function can run without being called

What is returned as a result of the call mystery(4,6)?

• 2
• 3
• 4
• 1

Which of the following is the best definition of a recursive method?

• A method that iterates itself exactly 5 times.
• A method that invokes itself by name within the method.
• A method that will never iterate infinitely.
• A method that cannot be called more than once.

Will recursion(5) iterate infinitely? 

• Yes
• No

How many objects can be made from a class? 

• None, you make classes from objects
  
• one
• As many as you want
• All of the above

Which of the following concepts of OOPS means exposing only necessary information to client?

• Encapsulation
• Abstraction
• Data hiding
• Data binding

What is the difference between a class and an object?

• A class is a blueprint to make an object
• An object is a blueprint to make a class
• A blueprint is an object to make a class
• Blueprint class is an object make a

An object is an instance of a:

• parameter
• method
• class
• application

The wrapping up of data and functions into a single unit is called

• overloading
• class
• object
• encapsulation 

The code below creates a turtle object and then tells it to move forwards 50 steps. What is the name of the method being called in this code?

• tracy

• Turtle

• forward

• 50