Data Communication and Computer Networks
⏰ How much time do you have?
Questions below update with thisWe'll show only the topics you can realistically cover.
Do din hai — ye actually kafi hai agar seriously padho 💪
2 din hai — ye actually kafi hai agar seriously padho. Block 2 aur Block 3 complete karo. ALOHA throughput formula yaad ho jaani chahiye.
📊 Topic Weightage by Block
9 papers · 2021–2025📝 Question Bank
2 Days plan · 18 questions
⭐ Must Practice First
15CRC (Cyclic Redundancy Check)
OSI Reference Model Layers
Transmission Media & Delays
Analog Modulation (AM, FM, PM, QAM)
Hamming Code
Stop and Wait ARQ
ALOHA Protocol & Throughput
Dijkstra's Shortest Path Algorithm
Routing Algorithms (Distance Vector, Link State)
Leaky Bucket & Token Bucket Traffic Shaper
IPv4 Header & IP Addressing
TCP Three-Way Handshake
Congestion Control vs Flow Control
RSA Key Generation Algorithm
Diffie-Hellman Key Exchange
Good to Prepare
3CSMA, CSMA/CD and CSMA/CA
Virtual Private Network (VPN)
UDP Features & Structure
✅ Pass Strategy (40+)
Study Block 1 basics (Transmission Media + Modulation) + Block 2 (CRC + ARQ) + Block 3 (Routing). Q1 has 8 parts of 5 marks each — attempt confidently: topology, CRC, delay, ARQ = ~20 marks. From Q2–Q5: routing algorithm + transport layer + one security question = ~25 marks. Total ~45 marks.
⭐ Distinction Strategy (72+)
Add deep coverage of Block 2 (ALOHA + CSMA + 802.11) + Block 3 (Dijkstra + Congestion) + Block 4 (TCP/UDP + RSA + DH). Know Leaky/Token Bucket, VPN, Hamming Code, and Piggybacking — all trending in last 4 papers. 20 Priority-1 answers memorised = 60+ marks minimum.