Functions Quiz - CBSE Class 11 ICT

Free practice quiz: Functions (CBSE Class 11 ICT). 20 multiple-choice questions with answers and explanations. Play online, no sign-up needed.

Sample questions

1. What is a function in programming?

   1. A block of code that performs a specific task
   2. A type of variable
   3. A data structure
   4. A loop
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   Answer: A. A block of code that performs a specific task

   A function is a reusable block of code designed to perform a specific task. It improves code organization and readability.

2. Explain the difference between a function's definition and a function's call.

   1. There is no difference
   2. Definition executes the function; call only declares it
   3. Definition declares the function; call executes it
   4. Definition is an input; call is an output
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   Answer: C. Definition declares the function; call executes it

   The function definition describes what the function does. The function call is the action of using it.

3. What is the scope of a variable declared inside a function?

   1. Global scope
   2. Local scope
   3. Static scope
   4. Dynamic scope
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   Answer: B. Local scope

   Variables declared inside a function have local scope; they are only accessible within that function.

4. What is the difference between pass-by-value and pass-by-reference when passing arguments to a function?

   1. Pass-by-value creates a copy; pass-by-reference uses the original
   2. Pass-by-value modifies the original; pass-by-reference creates a copy
   3. There is no difference
   4. Pass-by-value is faster, pass-by-reference is slower
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   Answer: A. Pass-by-value creates a copy; pass-by-reference uses the original

   Pass-by-value creates a copy of the argument, while pass-by-reference uses the original variable's memory location.

5. Discuss the advantages and disadvantages of using recursive functions.

   1. Advantages: Simplicity, Disadvantages: None
   2. Advantages: Efficiency, Disadvantages: Complexity
   3. Advantages: Simplicity, Disadvantages: Potential stack overflow
   4. Advantages: Speed, Disadvantages: Readability
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   Answer: C. Advantages: Simplicity, Disadvantages: Potential stack overflow

   Recursive functions can elegantly solve certain problems, but excessive recursion can lead to stack overflow errors.

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