Data Types: Char, Strings, Numbers (integers, Floats), and Boolean. IT-FUNDAMENTALS-ITF-CERTIFICATION Practice Questions (Page 1)

Questions 1–5

1. 1foundation · easy

   Which of the following is an example of a string value?

   • A"Hello World"
   • Btrue
   • C42
   • D'A'
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2. 2foundation · easy

   Which of the following values is an integer?

   • Afalse
   • B"123"
   • C-7
   • D3.14
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4. 3foundation · easy

   Which of the following is a valid Boolean value?

   • A0
   • B1
   • Ctrue
   • D"false"
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5. 4foundation · easy

   What is the purpose of the Boolean data type?

   • ATo store whole numbers
   • BTo store a single character
   • CTo store true or false values
   • DTo store numbers with decimals
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6. 5expert · medium

   A developer is writing a program that calculates the total cost of items in a shopping cart. The prices are $9.99, $19.95, and $4.50. The program must display the total with cents. The developer is deciding between using an integer or a float for the total. Which consideration is most important in this decision?

   • AA float can represent fractional cents, while an integer cannot
   • BAn integer can store the total if it is rounded first
   • CAn integer is faster for arithmetic operations
   • DA float uses less memory than an integer
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