QUEUES IN PYTHON

This form of access is used to add and remove nodes from a queue.

• LIFO, Last In First Out

• FIFO, First In First Out

• Both a and b

• none

What method is used to add an element to a Queue?

• dequeue()

• enqueue()

• push()

• pop()

What method is used to remove an element from a Queue?

• dequeue()

• enqueue()

• push()

• pop()

One difference between stack and queue?

• queues require dynamic memory,but stack do not

• stacks use two ends of the structure,queue use only one

• stacks requires dynamic memory ,but queues do not

• queues uses two ends of the structure,stack use only one

If FRONT= REAR then the queue is?

• overflow

• underflow

• empty

• null

A data structure in which elements can be inserted or deleted at/from

both the ends but not in the middle is?

• queue

• circular queue

• dequeue

• priority queue

Insertion in Queue is done at_____ end , and deletion is at _______ end

• start, last

• front, rear

• rear, front

• begin, stop

While implementing Queue using list when we want to delete element we must use pop function as__________

• list.pop(pos)

• list.pop(0)

• list.pop()

• list.pop(1)

If the elements “A”, “B”, “C” and “D” are placed in a queue and are deleted one at a time, in what order will they be removed?

• ABCD

• DCBA

• DCAB

• ABDC

If the numbers 5, 10, 3, 42 are enqueued onto a queue in that order, what does dequeue return?

• 5

• 10

• 3

• 42