Data Structures Quiz

What is the primary purpose of a data structure?

• To compile code faster

• To organise and store data efficiently

• To reduce CPU usage

• To control user input

Which of the following statements is true about arrays?

• Arrays in Python are always heterogeneous

• Arrays are a dynamic data structure

• Arrays store data in a contiguous block of memory

• Arrays can grow in size automatically

In most programming languages, array indexing starts at:

• 1

• 0

• -1

• Depends on the language

What does 'contiguous' mean in the context of arrays?

• The array elements are linked in a circular format

• Each element stores the next element’s address

• All elements are stored in adjacent memory locations

• Data types can vary within the array

What is the correct way to access the second element in a one-dimensional array called countries in most languages?

• countries[2]

• countries[1]

• countries(2)

• countries.1

What happens when you try to change the size of a static array in most languages?

• It automatically resizes

• It causes a syntax error

• The memory reallocates to fit new data

• It’s not possible

Which data structure is described as mutable and non-contiguous in Python?

• Array

• Tuple

• List

• Stack

Which of the following best describes a tuple in Python?

• A dynamic, mutable list

• An immutable data structure

• A data structure that supports mixed data types and sizes

• A file-based data store

What will happen if you attempt to update an element of a tuple in Python?

• The value updates normally

• A new tuple is created

• A syntax warning appears

• An error is raised

What kind of data structure would be best for storing a table of values?

• One-dimensional array

• Stack

• Two-dimensional array

• Tuple