This section contains more frequently asked Data Structure and Algorithm Basic Multiple Choice Questions and Answers (MCQs) in the various competitive exams.

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1. Data structure that contains a relationship between a pair of elements, this is not necessarily hierarchical in nature.

  • Tree
  • String
  • Graph
  • Array

2. Which of the following operations accesses each record exactly once so that certain items may be processed?

  • Inserting
  • Deleting
  • Traversing
  • Searching

3. Which of the following is also called first in first out FIFO system?

  • Tree
  • Stack
  • Queue
  • Graph

4. Which of the following is is also called last in first out LIFO system?

  • Queue
  • Stack
  • Graph
  • Tree

5. Which of the following is a non linear data structure?

  • Array
  • Linked list
  • Stack
  • Graph

6. Which of the following involves arranging the records in a logical order?

  • Merging
  • Sorting
  • Traversing
  • Searching

7. Which of the following operations combined record into different sorted files into a single sorted file?

  • Sorting
  • Merging
  • Searching
  • Inserting

8. Which of the following is a set of data values and associated operations that are specified accurately, independent of any particular implementation?

  • Stack
  • Tree
  • Abstract data type
  • Graph

9. Which of the following refers to a single unit of values?

  • Group item
  • Data item
  • Basic item
  • Elementary item

10. Which of the following is something that has certain attributes or properties which may be assigned values?

  • Field
  • File
  • Records
  • Entity

11. Which of the following is the collection of records of the entities in a given entity set?

  • Field
  • File
  • Records
  • Entity

12. The values in which field uniquely determine the record in a file

  • Primary key
  • Secondary key
  • Pointer
  • Key

13. In which of the following length records file records may contain different lengths?

  • Fixed
  • Primary
  • Variable
  • Entity

14. Which is the logical or mathematical model of a particular organization of a data?

  • Structures
  • Variable
  • Data structures
  • Function

15. Which of the following is not a primitive data structure?

  • Boolean
  • Integer
  • Arrays
  • Character
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