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CY-403 RGPV B.Tech

Computer Networks (CN)

Previous year papers and the official syllabus are free to read, no account needed.

Previous Year Papers

4 papers, latest Jun 2025

Free
See all 4 papers

Syllabus, notes and important questions for CY-403

Syllabus units

Topics as the official RGPV syllabus lists them.

Unit 1 Introduction to computer networks and OSI model 9 topics
  • Fundamentals of computer networks and their uses
  • Network topologies
  • ISO‑OSI layered architecture and peer‑to‑peer processes
  • Encapsulation and functions/services of OSI layers
  • Physical layer: digital signals, transmission impairments, maximum data rate
  • Shannon's theorem and Nyquist theorem
  • Transmission media – guided and unguided
  • Circuit, packet and message switching, virtual circuit concept
  • Introduction to ISDN and its components
Unit 1 notes
Unit 2 Data link layer protocols and medium access 10 topics
  • Design issues and functions of the data link layer
  • Error detection and correction techniques
  • Forward error correction versus retransmission
  • Hamming code and CRC codes
  • Framing methods – fixed‑size, variable‑size, bit stuffing, byte stuffing
  • Data link protocols – Stop‑and‑Wait, Sliding window, PPP, SLIP, HDLC
  • Medium access sublayer – static and dynamic channel allocation
  • ALOHA protocol
  • CSMA/CD and CSMA/CA
  • Collision‑free protocols – bitmap
Unit 2 notes
Unit 3 LAN standards, devices and network layer basics 7 topics
  • IEEE 802 LAN standards – 802.3, 802.4, 802.5
  • LAN devices – hubs, switches (learning, cut‑through, store‑and‑forward)
  • Bridges and spanning‑tree protocol
  • Remote bridges and inter‑bridge communication
  • Internetworking devices – routers and gateways
  • Network layer design issues and functions
  • Virtual‑circuit and datagram organization
Unit 3 notes
Unit 4 Routing algorithms and TCP/IP fundamentals 6 topics
  • Routing algorithms – shortest‑path, flooding, link‑state (LSR), distance‑vector, hierarchical routing
  • TCP/IP protocol suite architecture
  • Classful IP addressing
  • ARP and RARP mechanisms
  • IP datagrams with options and delivery process
  • ICMP functions
Unit 4 notes
Unit 5 Subnetting, transport and application layer services 5 topics
  • Subnetting, supernetting and CIDR
  • Transport‑layer congestion control, load shedding and jitter control
  • Transport‑layer addressing and multiplexing
  • Connection establishment, release and flow control
  • Application‑layer services – DNS and electronic mail
Unit 5 notes
Read the full syllabus

Exam insights

Counted from 4 past CY-403 papers.

Marks asked per paper, by unit

  • Unit 1 Introduction to computer networks & their uses 23 marks
  • Unit 2 The data link layer 21 marks
  • Unit 3 IEEE 802 standards for LANs 18 marks
  • Unit 4 Routing algorithms 23 marks
  • Unit 5 Subnet, Supernet, CIDR 18 marks

Average marks of the questions from each unit in one paper. You answer only some of them, so the total is more than the paper’s maximum.

Asked again and again

  1. Explain the working of the Domain Name System (DNS) and how it resolves domain names to IP addresses (and vice versa) using hierarchical servers, addressing and caching.

    Asked 3 times: 2025, 2024, 2023

  2. Perform CRC computation to find the checksum/codeword for given data and generator polynomial.

    Asked 2 times: 2025, 2024

  3. Design subnets for a given IPv4 network, determining subnet addresses, usable host IP ranges and broadcast addresses.

    Asked 2 times: 2025, 2023

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