1. What is the purpose of a variable in programming?

To store and manipulate data To control program flow To define functions To generate random numbers

2. What is the output of the following code snippet in Python?

x = 10
y = 5
print(x % y)    

10 5 0 2

3. In object-oriented programming, what is encapsulation?

The process of creating multiple instances of an object The process of hiding internal implementation details and providing a public interface The process of converting source code into machine code The process of handling exceptions and errors

4. What is the time complexity of searching for an element in a balanced binary search tree?

O(n) O(log n) O(n log n) O(1)

5. Which keyword is used to declare a constant variable in many programming languages?

var let const final

6. What does the acronym "HTML" stand for?

HyperText Markup Language Hyperlink and Text Markup Language Home Tool Markup Language HyperText Model Language

7. What is the purpose of the "else" statement in an "if-else" statement?

To execute a block of code only if a condition is true To specify an alternative condition to check To execute a block of code when no other conditions are met To define a loop construct

8. What does the term "DRY" stand for in programming?

Don't Repeat Yourself Document, Review, Yield Data Recovery Yield Debug, Run, Yield

9. In object-oriented programming, what is inheritance?

The process of creating multiple instances of an object The process of hiding internal implementation details and providing a public interface The process of reusing code from an existing class and extending its functionality The process of converting source code into machine code

10. Which programming language is often used for developing mobile applications?

Java Python C++ Swift