The longest path from node x to the leaf node?11 Data Structure and Node js Mcq questions and Answers

Data structure:

1. Which data structure is used to convert the infix to prefix notation?

1. Queue 
2. Binary tree
3. Stack 
4. None

Answer: 3)Stack

Stack data Structure

Data structure:

2. The data elements of an array are stored at ...........
Location in the main memory?

1. Non-contagious
2. Non-communicable
3. Contiguous 
4. None

Answer: 3)Contiguous 

Array In Data structure

Node Js:

3. The Source code in Node.Js is executed by .....

1. Node.Js interpreter
2. C compiler 
3. Js compiler 
4. None 

Answer: 1)Node.Js interpreter

Node Js:

4. Which of the following is not a feature of Node.Js?

1. Single-threaded 
2. No buffering 
3. Open-source
4. Embedded system

Answer: 4)Embedded System

Features of node js

Node Js:

5. Node JS is a ....... runtime environment.

1. Cross-platform 
2. Dependent 
3. Both A and B
4. None

Answer: 1)Cross-platform

Java script:

6. What is the output of the following code?

Console.log(null==undefined);

1. False
2. True 
3. Undefined 
4. None

Answer: 1)False.

Java script:

7. what is the output of the following code?

console.log(2+"2");

1. 22
2. 2
3. 4
4. 2/2

Answer: 1)22

Data structure:

8. In array, Space complexity for the worst case is........

1. O(n)
2. O(1)
3. O(log n)
4. None

Answer: 1) O(n)

Data structure:

9. The collection of similar type of data item stored at Contiguous memory locations is called........

1. Pointer
2. Arrays
3. Tree
4. None

Answer: 3)Arrays

Data structure:

10. Int, char, float, can hold .......... value.

1. Multiple values.
2. Double value
3. Single value
4. None

 Answer: 3)Single value

Array and structure are commonly used for storing multiple values, these are called composite data types.

Data structure:

11. The longest path from node x to the leaf node.

1. Depth of node x
2. Height of node x
3. Both 
4. None

Answer: 2)height of node x

Data Structure:

12. The node of the tree, which doesn't have any child node, is called....... node?

1. Leaf 
2. Child
3. Ancestor node
4. None

Answer: 1)leaf node

Read more About Data Structure basics

Tree Terminology In Data Structure