Introduction to Data Structures MCQ question and answer with solution

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31.
Which of the following data structures is used in implementing LRU cache?

A. Stack

B. Linked List

C. Queue

D. Hash Table

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32.
What is the time complexity of inserting an element at the end of an array?

A. O(1)

B. O(n)

C. O(log n)

D. O(n log n)

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33.
Which data structure is most suitable for implementing undo functionality?

A. Queue

B. Stack

C. Array

D. Hash Table

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34.
Which of the following is a self-adjusting data structure?

A. Stack

B. Queue

C. Linked List

D. Splay Tree

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35.
Which data structure is used in a breadth-first traversal of a graph?

A. Stack

B. Queue

C. Array

D. Linked List

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36.
Which of the following is not a characteristic of a linked list?

A. Dynamic size

B. Memory usage is more than arrays

C. Fast random access

D. Insertion and deletion are easier

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37.
What is the primary disadvantage of a linked list compared to an array?

A. Fixed size

B. Dynamic size

C. Slow access to elements by index

D. Simplified memory allocation

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38.
Which data structure is used to implement a priority queue?

A. Stack

B. Queue

C. Heap

D. Linked List

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39.
Which operation is not performed on a queue?

A. Enqueue

B. Dequeue

C. Peek

D. Push

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40.
Which of the following data structures can be used to implement a deque?

A. Stack

B. Queue

C. Array

D. Linked List

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Introduction to Data Structures MCQ question and answer with solution

31. Which of the following data structures is used in implementing LRU cache?

Answer & Solution

32. What is the time complexity of inserting an element at the end of an array?

Answer & Solution

33. Which data structure is most suitable for implementing undo functionality?

Answer & Solution

34. Which of the following is a self-adjusting data structure?

Answer & Solution

35. Which data structure is used in a breadth-first traversal of a graph?

Answer & Solution

36. Which of the following is not a characteristic of a linked list?

Answer & Solution

37. What is the primary disadvantage of a linked list compared to an array?

Answer & Solution

38. Which data structure is used to implement a priority queue?

Answer & Solution

39. Which operation is not performed on a queue?

Answer & Solution

40. Which of the following data structures can be used to implement a deque?

Answer & Solution

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31.
Which of the following data structures is used in implementing LRU cache?

32.
What is the time complexity of inserting an element at the end of an array?

33.
Which data structure is most suitable for implementing undo functionality?

34.
Which of the following is a self-adjusting data structure?

35.
Which data structure is used in a breadth-first traversal of a graph?

36.
Which of the following is not a characteristic of a linked list?

37.
What is the primary disadvantage of a linked list compared to an array?

38.
Which data structure is used to implement a priority queue?

39.
Which operation is not performed on a queue?

40.
Which of the following data structures can be used to implement a deque?