L6 Queue

What is the primary principle of a queue?

• First In, First Out

• Last In, First Out

• Random Access

• Circular Order

Which of the following operations is not associated with a queue?

• Enqueue

• Dequeue

• Peek

• Pop

What operation is used to add an element to the queue?

• Insert

• Enqueue

• Dequeue

• Push

What happens when you try to remove an element from an empty queue?

• Returns 0

• Underflow

• Overflow

• Queue becomes full

Which queue allows insertion at the rear and deletion at the front?

• Circular Queue

• Double-ended Queue

• Simple Queue

• Priority Queue

What is a circular queue?

• A queue with only one end

• A queue that resets when it reaches the end

• A queue with random access

• A queue that is sorted automatically

Which of the following allows insertion and deletion at both ends?

• Double-ended Queue

• Circular Queue

• Simple Queue

• Priority Queue

What is the time complexity of enqueue and dequeue operations in a queue?

• O(n)

• O(1)

• O(log n)

• O(n^2)

In a priority queue, which element is removed first?

• The element with the highest priority

• The element with the lowest priority

• The first inserted element

• The last inserted element

Which Java interface provides a Queue implementation?

• List

• Set

• Queue

• Map