Coding Fundamentals

Question 1

What is the time complexity of searching for an element in a balanced binary search tree (BST)?

Accepted Answer

O(log n)

Answer

O(1)

Answer

O(n)

Answer

O(n log n)

Question 2

Which SQL query retrieves all rows from a table named employees where the salary is greater than 5000?

Accepted Answer

SELECT * FROM employees WHERE salary > 5000;

Answer

SELECT * FROM employees WHERE salary = 5000;

Answer

SELECT salary FROM employees WHERE salary > 5000;

Answer

SELECT employees FROM salary WHERE > 5000;

Question 3

Which CSS property is used to create space between the element's content and its border?

Accepted Answer

padding

Answer

margin

Answer

border-spacing

Answer

spacing

Question 4

Which Python library is primarily used for data manipulation and analysis?

Accepted Answer

Pandas

Answer

NumPy

Answer

Matplotlib

Answer

Scikit-learn

Question 5

Which HTTP status code indicates that the resource was not found?

Accepted Answer

404

Answer

200

Answer

301

Answer

500