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Computer Networks (BCS603) AKTU exam strategy

Focus on Unit 2 (Link Layer and Medium Access Control) and Unit 3 (Network Layer). Together they account for about 75 marks among all questions printed per paper. Unit 4 (Transport Layer) is safest to skim if you're short on time.

Unit priority

  • Unit 2 (Link Layer and Medium Access Control) – Must Prepare, 38 marks avg. Unit 2 (Link Layer and Medium Access Control) averages 38 marks per paper — one of the heaviest units in this subject. Flow Control Protocols and Medium Access Control have appeared in every paper analysed — these are must-dos. Must-do: Flow Control Protocols, Medium Access Control, Error Detection and Correction.
  • Unit 3 (Network Layer) – High Priority, 37 marks avg. Unit 3 (Network Layer) averages 37 marks per paper — one of the heaviest units in this subject. Logical Addressing and Subnetting and Routing and Forwarding have appeared in every paper analysed — these are must-dos. Must-do: Routing and Forwarding, Logical Addressing and Subnetting, Congestion Control, IPv6.
  • Unit 1 (Introductory Concepts and Physical Layer) – High Priority, 32 marks avg. Unit 1 (Introductory Concepts and Physical Layer) averages 32 marks per paper — one of the heaviest units in this subject. Network Architecture and Protocols and Physical Layer Transmission have appeared in every paper analysed — these are must-dos. Must-do: Physical Layer Transmission, Network Architecture and Protocols, Network Goals and Categories.
  • Unit 5 (Application Layer) – Medium Priority, 29 marks avg. Unit 5 (Application Layer) averages 29 marks per paper — one of the heaviest units in this subject. Must-do: Network Management and SNMP, File Transfer Protocol, Data Compression and Cryptography, Electronic Mail and SMTP.
  • Unit 4 (Transport Layer) – Safe to Skim, 18 marks avg. Unit 4 (Transport Layer) averages 18 marks per paper — one of the heaviest units in this subject. TCP Protocol has appeared in every paper analysed — these are must-dos. Must-do: TCP Protocol.

Topics AKTU keeps repeating

  • Network Architecture and Protocols: Asked in 6 out of 6 papers. If you prepare only one topic from its unit, make it this one.
  • Physical Layer Transmission: Asked in 6 out of 6 papers. If you prepare only one topic from its unit, make it this one.

Short on time?

  • Among all units, Unit 4 (Transport Layer) is the lowest priority at 18M avg. If you're running low on time, prioritize the top 3 units and give this one a quick read. But even here — TCP Protocol is high-repeat topics. Cover it 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 2 (Link Layer and Medium Access Control) 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 6 past papers — the patterns here are highly reliable.