JavaScript Queue

This section covers the questions for the Queue using JavaScript to clear all your concepts.

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Question 1

How many stacks are needed to implement a queue. Consider the situation where no other data structure like arrays, linked list is available to you.

  • 1

  • 2

  • 3

  • 4

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Question 2

Which of the following is not a fundamental operation of a queue?



 

  • A. Enqueue

  • B. Dequeue

  • C. Peek

  • D. Append

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Question 3

Which of the following is not a way to implement a queue in JavaScript?



 

  • A. Using an array

  • B. Using a linked list

  • C. Using an object

  • D. Using a binary search tree

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Question 4

What is the time complexity of the enqueue operation in a queue implemented as a dynamic array?



 

  • A. O(1)

  • B. O(log n)

  • C. O(n)

  • D. O(n^2)

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Question 5

Which of the following is a queue data structure that maintains a fixed-size buffer and overwrites the oldest data?



 

  • A. Circular queue

  • B. Priority queue

  • C. Double-ended queue

  • D. Deque

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Question 6

Which of the following is an example of a dynamic queue in JavaScript?



 

  • A. FixedQueue

  • B. LinkedListQueue

  • C. StaticQueue

  • D. PriorityQueue

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Question 7

Which of the following is not a disadvantage of using an array to implement a queue?



 

  • A. Limited capacity

  • B. Higher memory usage

  • C. Slower dequeue operation

  • D. No constant-time access to the middle elements

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Question 8

Which of the following is not a common application of a queue?



 

  • A. Implementing a printer job queue

  • B. Implementing a web browser's forward button

  • C. Breadth-first search algorithm

  • D. Storing configuration settings

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Question 9

In a queue implemented using an array, which index corresponds to the front of the queue?




 

  • A. 0

  • B. 1

  • C. The last index

  • D. The middle index

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Question 10

Which of the following operations on a queue data structure has a time complexity of O(1)? 

A) Enqueue 
B) Dequeue 
C) Peek 
D) Clear

  • A and B

  • B only

  • C only

  • A and D 

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There are 10 questions to complete.

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