Question 1

What is recursion?

Accepted Answer

A technique where a function calls itself within its own definition.

Answer

A method of iterating through arrays.

Answer

A technique to optimize memory usage.

Answer

A way to create infinite loops.

Question 2

Which of the following is a characteristic of recursive subroutines?

Accepted Answer

A stopping condition must be present.

Answer

They require multiple parameters.

Answer

They must always run in a loop.

Answer

They can never return a value.

Question 3

What does the factorial of a number represent?

Accepted Answer

The product of all positive integers less than or equal to that number.

Answer

The square of the number.

Answer

The sum of all integers from one to that number.

Answer

The number divided by all integers up to that number.

Question 4

Which approach uses more memory, recursion or iteration?

Accepted Answer

Recursion uses more memory.

Answer

Both use the same amount of memory.

Answer

Iteration uses more memory.

Answer

Neither uses memory.

Question 5

In the recursive function for factorial, what is the base case?

Accepted Answer

When n equals zero.

Answer

When n is greater than zero.

Answer

When n equals one.

Answer

When n is a negative number.

Question 6

What is a stack overflow?

Accepted Answer

Running out of memory due to too many recursive calls.

Answer

An error in coding syntax.

Answer

A method to optimize recursive functions.

Answer

A type of data structure.

Question 7

Which method is more efficient for calculating factorial in terms of memory usage?

Accepted Answer

Using iteration.

Answer

Both are equally efficient.

Answer

Using a loop.

Answer

Using recursion.

Question 8

What is the main advantage of using recursion?

Accepted Answer

It can simplify code for certain problems.

Answer

It automatically speeds up execution.

Answer

It eliminates the need for variables.

Answer

It is always the best option for all programming tasks.

Question 9

Why might recursion be avoided in programming?

Accepted Answer

It can lead to stack overflow errors.

Answer

It always runs slower than loops.

Answer

It is the only method available.

Answer

It is less readable than iterative solutions.

Question 10

What is a common use case for recursion?

Accepted Answer

Tree traversal algorithms.

Answer

Network request handling.

Answer

Sorting arrays.

Answer

Displaying user interfaces.

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