Quiz on Data Structures & Algorithms: Queue

What principle does a Queue Data Structure follow?

• FIFO (First In – First Out)

• LOFI (Last Out – First In)

• FILO (First In – Last Out)

• LIFO (Last In – First Out)

What operation removes data from the front of the queue?

• dequeue()

• isFull()

• enqueue()

• peek()

Which operation checks if the queue is empty?

• isEmpty()

• size()

• peek()

• isFull()

What happens when a queue is full?

• Data can be added only when it is empty

• New data can be added immediately

• Data can be added at any position

• Data can be added at the front

What does the peek() operation do?

• Checks if the queue is full

• Returns the data at the front of the queue

• Adds data to the queue

• Removes data from the queue

What is the limitation of the Queue Data Structure?

• It cannot remove elements

• It can add elements at any position

• It can be accessed randomly

• It can only hold a fixed number of elements

Which of the following is NOT a queue operation?

• enqueue()

• dequeue()

• isEmpty()

• insert()

What is the result of calling size() on a queue?

• It removes the last element

• It checks if the queue is empty

• It returns the number of elements in the queue

• It returns the front element

In a queue, what does the term 'rear' refer to?

• The front of the queue

• The end where data is added

• The position of the last removed element

• The size of the queue

What is the initial state of an empty queue represented as?

• Only the front position filled

• All positions empty

• All positions filled with data

• Only the rear position filled