Queue Quiz

Which of the following is the correct order of queue operations?

• FIFO

• LIFO

• FILO

• LOFI

Which of the following is commonly used to implement a queue?

• Array

• Adjacency List

• Adjacency Matrix

• Linked List

• Binary Search Tree

Which of the following is not a basic operation on a queue?

• enqueue

• dequeue

• peek

• insert_at_middle

What will be the result of dequeue operation on an empty queue?

• Overflow

• Error

• Underflow

• Null

Which of these is not a type of queue?

• Simple Queue

• Circular Queue

• Double Queue

• Priority Queue

What does the dequeue operation do in a queue?

• Removes an element from the rear

• Removes an element from the front

• Adds an element at the end

• Adds an element at the front

Which part of the queue changes during an enqueue operation?

• Front

• Rear

• Both

• Neither

Why is a circular queue used instead of a simple queue?

• More memory

• Easy to implement

• Avoids memory wastage

• FIFO property

Explain the FIFO concept in queues with an example.

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Answer explanation

Sample Answer:

FIFO (First In First Out) means the first element added to the queue will be the first one to be removed. Example: If we enqueue 10, 20, 30, then dequeuing will remove 10 first.

Differentiate between linear queue and circular queue.

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Answer explanation

Sample Answer:
Linear queue does not reuse the vacant spaces after dequeuing, whereas circular queue wraps around and utilizes the space efficiently by treating the queue as circular.