## Data Structure Multiple Choice Questions and Answer| 30 Basic of Array Multiple Choice Questions PDF

Data Structure MCQ : In this section, we have to discuss about 30 Basic data structure/basic of array objective type questions and answers/ Array multiple choice questions/Data structure MCQ questions pdf download/Data structure MCQ question and answer/ Data structures and algorithm MCQ questions/ Data structure mcqs for placement questions are given below. We are using data structures in our everyday life. The data structure is a key component of Computer Science subject and is largely used in the areas of Artificial Intelligence, operating systems, graphics, etc. Data structure provides the right way to organize information in the digital space. Most of the IT sector ask the interview questions about array data structure. That’s why we have given Data structure mcqs for placement. Candidate use this below questions to start and develop your career growth.

### Data structure MCQ online test with answers -Highlights

 Name of the Article Data Structure Number of Questions 30 Category MCQ Type

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### Read the given below Array multiple choice questions and answers/PDF Format.

#### 1. Which one of the following is the process of inserting an element in the stack?

1. Insert
2. Push
4. None of the above

#### 2. Which one of the following is not the application of the stack data structure?

1. Asynchronous data transfer
2. String reversal
3. Backtracking
4. Recursion

1. +A*BC
2. ABC+*
3. +AB*C
4. A+(BC*)

1. Queue
2. stacks
4. Binary tree

#### 5. Which of the following highly uses the concept of an array?

1. Binary Search tree
2. Caching
3. Spatial locality
4. Scheduling of Processes

#### 6.  Which of the following is the infix expression?

1. ABC+*
2. A+B*C
3. +A*BC
4. None of the above

1. Stack
2. Queue
4. Binary tree

1. 12
2. 5
3. 11
4.  4

#### 9. Which one of the following node is considered the top of the stack if the stack is implemented using the linked list?

1. Second Node
2. First Node
3. Last Node
4. None of the above

1. Queue
2. Stack
3. Binary Tree

1. Underflow
2. Front value
3. Overflow
4. Rear value

#### 12.  Which one of the following is not the application of the Queue data structure?

1. Data is transferred asynchronously
2. Resource shared between various systems
3. Balancing of symbols

1. 4
2. 1
3. 3
4. 2

#### 14. Which one of the following techniques is not used in the Binary tree?

1. Preorder traversal
2. Randomized traversal
3. Inorder traversal
4. Postorder traversal

1. 3
2. 2
3. 1
4. 4

#### 16.  A linear data structure in which insertion and deletion operations can be performed from both the ends is_______

1. Circular Queue
2. Deque
3. Queue
4. Priority Queue

#### 17. How can we describe an array in the best possible way?

1. Arrays are immutable
2. Container that stores the elements of similar types
3. The Array is not a data structure
4. The Array shows a hierarchical structure

Answer: Container that stores the elements of similar types

#### 18. What is another name for the circular queue among the following options?

1. Rectangle buffer
2. Square buffer
3. Ring Buffer
4. None of the above

#### 19. Which of the following that determines the need for the Circular Queue?

2. Access the Queue using priority
3. Avoid wastage of memory
4. Follows the FIFO principle

#### 20. Which of the following principle does Queue use?

1. FIFO Principles
2. LIFIO Principles
3. Ordered Array
4. Linear Tree

1. AStack
3. Array
4. binary Heap

1. Stack
3. Array
4. Queue

#### 23. Which of the following satisfies the property of the Red Black tree?

1. Black, if the new node is a root node
2. Red, if the new node is not a root node
3. Black, if the new node is not a root node
4. Both A and B

1. O(n2)
2. O(1)
3. O(nlogn)
4. O(n)

#### 25. Which one of the following is the overflow condition if linear queue is implemented using an array with a size MAX_SIZE?

1. rear=MAX_SIZE -1
2. rear = MAX_SIZE
3. rear = front+1
4. rear = front

#### 26.  Which of the following is a Divide and Conquer algorithm?

1. Merge Sort
2. Heap Sort
3. Selection Sort
4. Bubble Short

#### 27. Which of the following principle is used if two elements in the priority queue have the same priority?

1. Linear Tree
2. FIFO
3. LIFO
4. None of the above

1. O(n)
2. O(1)
3. O(nlogn)
4. O(logn)

#### 29. Which one of the following is not the type of the Queue?

1. Linear Queue
2. Single ended Queue
3. Circular Queue
4. Double ended Queue

#### 30. If the elements ‘1’, ‘2’, ‘3’ and ‘4’ are added in a stack, so what would be the order for the removal?

1. 4321
2. 1234
3. 2314
4. None of the above

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