A aeroplane covers a distance of 7200 km in 80 hours.

Which attack can be mitigated using DNSSEC (Domain Name System Security Extensions)?

In Python, what will be the output of the following code snippet, considering scope rules?

x = 5               

What is the primary purpose of a B+ Tree in a database management system?

What is the primary purpose of an abstract class?

If a stack is implemented using a fixed-size array, what is a significant disadvantage when the stack grows beyond its initial capacity?

What is "rubber duck debugging"?

Consider the following Python code for calculating the length of the LCS:

def lcs_length(text1, text2):

    m = len(text1)

Time complexity of heap sort is:

Which of the following best describes Abstraction in Object-Oriented Programming (OOP)?