Home › AKTU PYQ › Data Structures › Exam Strategy

Data Structures (BCS301) AKTU exam strategy

Focus on Unit 4 (Trees) and Unit 1 (Introduction, Arrays & Linked Lists). Together they account for about 61 marks among all questions printed per paper. Unit 5 (Graphs) is safest to skim if you're short on time.

Unit priority

  • Unit 4 (Trees) – Must Prepare, 31 marks avg. Unit 4 (Trees) averages 31 marks per paper — one of the heaviest units in this subject. Must-do: Trees & Binary Trees, AVL, B-Trees & Binary Heaps, Binary Search Tree (BST), Threaded Binary Trees.
  • Unit 1 (Introduction, Arrays & Linked Lists) – High Priority, 30 marks avg. Unit 1 (Introduction, Arrays & Linked Lists) averages 30 marks per paper — one of the heaviest units in this subject. Introduction & Complexity Analysis and Arrays have appeared in every paper analysed — these are must-dos. Must-do: Linked Lists, Arrays, Introduction & Complexity Analysis.
  • Unit 2 (Stacks, Recursion & Queues) – High Priority, 30 marks avg. Unit 2 (Stacks, Recursion & Queues) averages 30 marks per paper — one of the heaviest units in this subject. Stacks has appeared in every paper analysed — these are must-dos. Must-do: Stacks, Recursion, Queues.
  • Unit 3 (Searching, Hashing & Sorting) – Medium Priority, 30 marks avg. Unit 3 (Searching, Hashing & Sorting) averages 30 marks per paper — one of the heaviest units in this subject. Hashing and Sorting have appeared in every paper analysed — these are must-dos. Must-do: Sorting, Hashing, Searching.
  • Unit 5 (Graphs) – Safe to Skim, 28 marks avg. Unit 5 (Graphs) averages 28 marks per paper — one of the heaviest units in this subject. Must-do: Graphs, Shortest Path & Transitive Closure, Minimum Spanning Tree.

Topics AKTU keeps repeating

  • Introduction & Complexity Analysis: Asked in 7 out of 7 papers. If you prepare only one topic from its unit, make it this one.
  • Arrays: Asked in 7 out of 7 papers. If you prepare only one topic from its unit, make it this one.

Short on time?

  • Among all units, Unit 5 (Graphs) is the lowest priority at 28M avg. If you're running low on time, prioritize the top 3 units and give this one a quick read. But even here — Graphs, Minimum Spanning Tree, Shortest Path & Transitive Closure are high-repeat topics. Cover these at minimum to stay safe.

How the paper is marked

  • Section A: 7 questions × 2 marks = 14 marks. Short definition/concept questions from all 5 units. Prepare 2–3 key definitions per unit — this section is the easiest 14 marks you can secure.
  • Section B: Attempt any 3 of 5 questions × 7 marks = 21 marks. Choose the 3 questions from units you've prepared most. Don't attempt all 5 — pick your strongest 3 and write them well.
  • Section C: 5 OR-pairs × 7 marks = 35 marks. One pair per unit — you must attempt all 5. This is where the exam is won or lost. Focus your deep preparation on the top 3 priority units.

Exam-day tips

  • Start with Section A to build momentum — budget 15–20 minutes max for all 7 questions.
  • In Section B, Unit 4 (Trees) questions have the highest repeat rate — always attempt that one first.
  • For Section C OR-pairs, read both options before choosing — sometimes the 'b' option is simpler despite appearing longer.
  • If you've prepared the VERY LIKELY topics, you can comfortably score 50+ marks without touching any new topic on exam day.
  • This strategy is built on 7 past papers — the patterns here are highly reliable.