Which of the following technologies were used by

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

x = 5               

Which of the following is NOT a characteristic of a minimum spanning tree (MST) in a connected, undirected graph?

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

Which of the following represents the Preorder Traversal of the binary tree given below?

Which of the following data structures is best suited for implementing a LIFO (Last In, First Out) mechanism?

Which data structure is used in BFS traversal of graphs?

Which of the following is the most critical success factor for the implementation of a Decision Support System (DSS) within an organization?

What is the purpose of the keys() method in a dictionary?

If an algorithm takes $5n²  + 3n + 10$ steps for an input of size n, its Big O notation would be:

Consider the following stack operations. What will be the content of the stack after executing all the operations?