Programming Concepts: Variables, Constants, Arrays, Functions, and Objects. IT-FUNDAMENTALS-ITF-CERTIFICATION Practice Questions (Page 3)

Questions 11–13

1. 11foundation · easy

   What is an array in programming?

   • AA block of code that performs a specific task and returns a result.
   • BA named value that cannot be changed during program execution.
   • CA single variable that stores one value at a time.
   • DA collection of elements of the same type, accessed by an index.
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2. 12foundation · easy

   What is the primary characteristic of a constant in programming?

   • AIts value can be reassigned multiple times during program execution.
   • BIts value is set once and cannot be changed during program execution.
   • CIt is a reusable block of code that performs a specific action.
   • DIt stores a collection of elements of the same data type.
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3. 13application · medium

   A developer is writing a program that calculates the area of a rectangle. The formula (length * width) is used in multiple places. What is the best way to implement this to avoid code duplication?

   • ADefine a constant for the area and update it each time.
   • BWrite the formula inline each time it is needed.
   • CStore length and width in an array and multiply the elements.
   • DDefine a function that takes length and width as parameters and returns the product.
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