MCQ IN COMPUTER SCIENCE & ENGINEERING

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COMPUTER SCIENCE AND ENGINEERING

DATA STRUCTURES

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Which of the following are TRUE about queue?I. Queue in data structure which follow first-in-first-out (FIFO) conceptII. Primary queue operations are enqueue and dequeueIII. Queue allows node to be added or removed from the front (head.IV. The similarity between queue and stack is on process for adding and removing data.
A
I and II
B
II and III
C
I, II, IV
D
II, III, IV
Explanation: 

Detailed explanation-1: -In queue, we will follow first in first out principle for insertion and deletion of elements. Element with least priority will be deleted in a priority queue.

Detailed explanation-2: -FIFO (First-In-First-Out) queues have all the capabilities of the standard queues, but are designed to enhance messaging between applications when the order of operations and events is critical, or where duplicates can’t be tolerated.

Detailed explanation-3: -The queue data structure follows the FIFO (First In First Out) principle, i.e. the element inserted at first in the list, is the first element to be removed from the list.

Detailed explanation-4: -The primary difference between Stack and Queue Data Structures is that Stack follows LIFO while Queue follows FIFO data structure type.

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