Understanding Concepts Quiz

Challenge yourself with questions on OOP, algorithms, databases, and more. See how well you understand programming languages.

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What is the output of the following code snippet in Python?
print(2 + 2 * 3)

What does SQL stand for?

Structured Query Language

Sequential Query Language

Standard Query Language

Simple Query Language

Which of the following is NOT a valid data type in Python?

int

float

string

character

In the context of databases, what does CRUD stand for?

Create, Retrieve, Update, Delete

Control, Retrieve, Update, Delete

Copy, Remove, Update, Distribute

Create, Remove, Use, Distribute

What is the output of the following code snippet in JavaScript?
console.log(0 == '0');

true

false

undefined

NaN

Which of the following is NOT a valid HTTP request method?

GET

POST

UPDATE

DELETE

What is the main purpose of encapsulation in object-oriented programming?

To hide the implementation details of a class and only expose the necessary functionalities

To make a class accessible from any part of the program

To restrict the access to certain class members

To allow multiple inheritance

Which data structure uses First In First Out (FIFO) principle?

Stack

Queue

Tree

Linked List

What is the purpose of a constructor in object-oriented programming?

To create an instance of a class

To destroy an instance of a class

To initialize the data members of a class

To hide the implementation details of a class

#10

What is the output of the following code snippet in Java?
int x = 5;
System.out.println(x++);

Error

#11

What is the purpose of the 'elif' keyword in Python?

To define a block of code that will be executed if a condition is false

To check multiple conditions sequentially until one is true

To define a block of code that will be executed if the preceding 'if' or 'elif' condition is true

To define a default block of code that will be executed if all preceding conditions are false

#12

What is the purpose of the 'finally' block in a try-except-finally statement in Python?

To handle exceptions

To execute code regardless of whether an exception occurs or not

To specify the conditions under which an exception should be raised

To catch specific types of exceptions

#13

What is the time complexity of the quicksort algorithm in the worst-case scenario?

O(n)

O(n log n)

O(n^2)

O(log n)

#14

Which of the following sorting algorithms has the lowest worst-case time complexity?

Bubble Sort

Selection Sort

Insertion Sort

Merge Sort

#15

Which of the following is NOT a valid HTTP status code?

200

400

600

404

Understanding Concepts Quiz

What is the output of the following code snippet in Python?
print(2 + 2 * 3)

What does SQL stand for?

Which of the following is NOT a valid data type in Python?

In the context of databases, what does CRUD stand for?

What is the output of the following code snippet in JavaScript?
console.log(0 == '0');

Which of the following is NOT a valid HTTP request method?

What is the main purpose of encapsulation in object-oriented programming?

Which data structure uses First In First Out (FIFO) principle?

What is the purpose of a constructor in object-oriented programming?

What is the output of the following code snippet in Java?
int x = 5;
System.out.println(x++);

What is the purpose of the 'elif' keyword in Python?

What is the purpose of the 'finally' block in a try-except-finally statement in Python?

What is the time complexity of the quicksort algorithm in the worst-case scenario?

Which of the following sorting algorithms has the lowest worst-case time complexity?

Which of the following is NOT a valid HTTP status code?

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Understanding Concepts Quiz

What is the output of the following code snippet in Python? print(2 + 2 * 3)

What does SQL stand for?

Which of the following is NOT a valid data type in Python?

In the context of databases, what does CRUD stand for?

What is the output of the following code snippet in JavaScript? console.log(0 == '0');

Which of the following is NOT a valid HTTP request method?

What is the main purpose of encapsulation in object-oriented programming?

Which data structure uses First In First Out (FIFO) principle?

What is the purpose of a constructor in object-oriented programming?

What is the output of the following code snippet in Java? int x = 5; System.out.println(x++);

What is the purpose of the 'elif' keyword in Python?

What is the purpose of the 'finally' block in a try-except-finally statement in Python?

What is the time complexity of the quicksort algorithm in the worst-case scenario?

Which of the following sorting algorithms has the lowest worst-case time complexity?

Which of the following is NOT a valid HTTP status code?

Quiz Questions with Answers

Test Your Knowledge

Popular Quizzes in Programming Languages

Popular Quizzes in Computer Science

Other Quizzes to Explore

What is the output of the following code snippet in Python?
print(2 + 2 * 3)

What is the output of the following code snippet in JavaScript?
console.log(0 == '0');

What is the output of the following code snippet in Java?
int x = 5;
System.out.println(x++);