(SEM III) THEORY EXAMINATION 2024-25 DATA STRUCTURE

1. Overview of the Examination Structure

The BCS301 – Data Structure examination is a three-hour theory paper carrying a total of seventy marks. The paper is divided into three structured sections that collectively evaluate the student’s understanding of fundamental concepts, applied problem-solving techniques, and advanced algorithmic implementations. The exam is designed to measure both conceptual clarity and practical reasoning across core data structure topics such as arrays, linked lists, stacks, queues, trees, graphs, hashing, and searching–sorting algorithms.

2. Section A – Conceptual Understanding and Basic Definitions

Section A consists of seven short-answer questions, each worth two marks, requiring brief yet conceptually clear responses. This part of the question paper focuses on foundational ideas such as the necessity of pointers in maintaining linked list structures, memory address calculation within arrays, the concept and importance of priority queues, and the logical outcome of stack operations after a sequence of push and pop commands. It further explores indexed sequential searching, the nature of nonlinear data structures through examples, and the significance of threaded binary trees. The aim of this section is to assess the student’s basic theoretical understanding and their ability to articulate key data structure principles concisely.

3. Section B – Intermediate Problem-Solving and Structural Representations

Section B requires students to attempt any three questions, each carrying seven marks. These questions demand detailed reasoning, diagrammatic explanation, and step-wise evaluation. Students may be asked to compute the address of array elements stored in row-major order, demonstrate how a stack can be implemented using a linked list, or construct a binary tree from given preorder and inorder traversals. Additional tasks include building an AVL tree through sequential insertions and explaining the Depth-First Search algorithm with the help of a sample graph. This section evaluates the student’s intermediate-level skills in understanding data organization, tracing algorithms, and accurately representing structural relationships between elements.

4. Section C – Advanced Applications and Algorithmic Implementations

Section C contains five sets of two optional questions each, with students required to answer one question from every set. These questions are application-oriented and test higher-order thinking, algorithm design, and complete implementation skills. Topics in this section include discussing asymptotic notations, time–space tradeoff, and abstract data types; representing polynomials using linked lists and adding them through a C program; constructing linked-list-based queues and explaining the need for circular queue implementation; checking balanced parentheses using stacks; building hash tables with collision resolution using linear probing; demonstrating merge sort with complexity analysis; constructing B-Trees and Binary Search Trees with given sequences; and explaining graph representations, properties, and classifications. This section measures the student’s capacity to apply theoretical concepts to real computational problems and produce logically structured solutions.

5. Overall Purpose and Learning Assessment

The Data Structure examination is systematically designed to assess the depth of a student’s understanding across both theoretical and practical dimensions of the subject. Section A ensures clarity of fundamental concepts, Section B evaluates the ability to translate concepts into structured problem-solving, and Section C tests advanced application through algorithmic demonstrations and complete implementations. Collectively, the paper provides a comprehensive assessment of the student’s ability to design, analyze, and reason about data structures — skills essential for effective programming and software development.