Data Structures MCQs with Answers
Practice important Data Structures MCQs with answers and explanations.
Multiple Choice Questions
Q31: How does the get() method in an array-based list function?
- A: Removes the current element
- B: Adds a new element
- C: Returns the current element
- D: Updates the current element
View Answer
C
Q32: What does the start() method set the current position to in an array-based list?
- A: Index 0
- B: Index 1
- C: The last element
- D: The middle element
View Answer
B
Q33: What does the end() method set the current position to in an array-based list?
- A: Index 0
- B: Index 1
- C: The last element
- D: The middle element
View Answer
C
Q34: In a linked list, what does each node contain?
- A: Only the element
- B: Element and index
- C: Element and next node address
- D: Element and previous node address
View Answer
C
Q35: What is the average case for the find() method in an array-based list?
- A: Search half of the list
- B: Search the entire list
- C: Search the first element only
- D: Search for the next element
View Answer
A
Q36: What does the current pointer refer to in a linked list implementation?
- A: The first node
- B: The last node
- C: The current node
- D: The previous node
View Answer
C
Q37: What is the limitation of using an array for constructing a list data structure?
- A: Dynamic size
- B: Fixed size
- C: Flexible memory allocation
- D: Variable length
View Answer
B
Q38: What data structure was introduced to overcome the limitation of arrays?
- A: Stack
- B: Queue
- C: Linked List
- D: Binary Tree
View Answer
C
Q39: In a linked list, what does the head pointer contain?
- A: Value of the first node
- B: Memory address of the first node
- C: Memory address of the last node
- D: Value of the last node
View Answer
B
Q40: What does the 'next' part of a linked list node contain?
- A: Data
- B: Head pointer
- C: Memory address of the next node
- D: NULL
View Answer
C