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JavaScript Queue
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.
- A
1
- B
2
- C
3
- D
4
Question 2
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
A and B
- B
B only
- C
C only
- D
A and D
Question 3
Which of the following is not a fundamental operation of a queue?
- A
Enqueue
- B
Dequeue
- C
Peek
- D
Append
Question 4
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
Question 5
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)
Question 6
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
Question 7
Which of the following is an example of a dynamic queue in JavaScript?
- A
FixedQueue
- B
LinkedListQueue
- C
StaticQueue
- D
PriorityQueue
Question 8
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
Question 9
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
Question 10
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
There are 10 questions to complete.