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DSA-23-7-25

Authored by Geetha D

Computers

University

Used 1+ times

DSA-23-7-25
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10 questions

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1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which pointer is updated when a new element is enqueued into a queue implemented using a linked list?

tail pointer
head pointer
front pointer
rear pointer

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What happens when the last element is dequeued from a queue implemented using a linked list?

The queue becomes empty, and head and tail pointers are set to null.
The last element is moved to the front of the queue.
The queue automatically resets to its initial state.
The queue retains the last element as a placeholder.

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

In a linked list-based queue, which condition checks if the queue is empty?

front == rear

rear == NULL

front == NULL

front == rear == NULL

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which operation removes the first element of a queue?

peek
pop
enqueue
dequeue

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What data structure is used internally to implement a queue using a linked list?

Tree

Singly Linked list

Stack
Array

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What happens if we try to dequeue from an empty linked list-based queue?

The queue automatically resets itself to a default state.
The last element is returned instead of an error.
The operation completes successfully without any changes.
An error or exception is raised indicating the queue is empty.

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the first step in the enqueue(data) algorithm for a linked list queue?

Return the current size of the queue.
Create a new node with the given data.
Check if the queue is empty before adding data.
Remove the first node from the queue.

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