Programming Concepts: Variables, Constants, Arrays, Functions, and Objects. IT-FUNDAMENTALS-ITF-CERTIFICATION Practice Questions (Page 1)

Questions 1–5

1. 1foundation · easy

   What is the relationship between a class and an object?

   • AA class is a specific instance of an object.
   • BAn object is an instance of a class, created from the class blueprint.
   • CAn object is a blueprint, and a class is the concrete entity created from it.
   • DA class and an object are the same thing and can be used interchangeably.
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2. 2foundation · easy

   In object-oriented programming, what is an object?

   • AA reusable block of code that takes inputs and returns an output.
   • BA collection of elements of the same type accessed by an index.
   • CA named storage location that holds a value that can change.
   • DA self-contained entity with properties (attributes) and methods (behaviors).
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4. 3foundation · easy

   Why would a programmer choose to use a constant instead of a variable?

   • ATo create a reusable block of code that can be called with different inputs.
   • BTo hold multiple related values in a single indexed structure.
   • CTo ensure a data value remains unchanged and cannot be accidentally modified.
   • DTo store a value that needs to be updated frequently during execution.
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5. 4foundation · easy

   Which of the following best describes how a function interacts with data?

   • AIt can only access data by index and cannot process it.
   • BIt can accept inputs, perform actions, and return an output.
   • CIt can only hold a fixed value that cannot be changed.
   • DIt can only store data and cannot perform any operations.
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6. 5application · medium

   A program needs to represent a car with attributes like color and speed, and behaviors like accelerate and brake. Which programming construct is best suited for this?

   • AAn array containing the color, speed, and function names.
   • BA constant that stores the car's color and speed.
   • CAn object with properties for color and speed, and methods for accelerate and brake.
   • DA function that takes color and speed as parameters and returns a value.
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