T-Level DPDD: Abstraction Quiz

What is the process of removing or filtering characteristics that are not needed to focus on essential characteristics called?

• Encapsulation

• Inheritance

• Abstraction

• Polymorphism

What does abstraction in computational thinking involve?

• Hiding the complexity of something from the user

• Showing all details of the operations to the user

• Making the user perform all operations manually

• Ignoring the operations completely

What is an example of abstraction in a computer system?

• The user manually loads the operating system into RAM

• The user presses the power button and the computer turns on

• The user writes code to start the computer

• The user installs the operating system every time they turn on the computer

What is hidden from the user when they press the power button on a computer?

• The process of powering up and loading the operating system into RAM

• The process of shutting down the computer

• The process of installing new software

• The process of connecting to the internet

Once an abstraction layer has been identified, the layer can be described fully by what?

• Its inputs, outputs and processes

• Its variables and constants

• Its inputs, outputs, variables, constants, key processes and repeated processes

• Its key processes and repeated processes

What are the inputs and outputs of a system?

• Inputs are what goes into a system, and outputs are what comes out of it.

• Inputs are the final results, and outputs are the initial data.

• Inputs are the constant values, and outputs are the variable values.

• Inputs are the user commands, and outputs are the system errors.

What is the role of variables in abstraction?

• They are values that do not change

• They are actions that the layer must carry out

• They are values that will change

• They are processes repeated several times

Which of the following is an example of a variable in a system?

• The mathematical constant pi (π)

• The temperature taken at different times of the day

• The number of customers

• The average age of the customers

What is a constant?

• A constant value

• An unchangeable output

• A fixed output

• A value that can change

What is a well-known example of a constant in a system?

• The temperature taken at different times of the day

• The count of the total age

• The mathematical constant pi (π)

• The customers' information