Computer Networks Question Paper

Computer Networks

Subject Code Subject Name Credits
MCA 203 Computer Networks 4
Subject Code Subject Name Teaching Scheme     Credits Assigned      
Theory Pract Tut Theory TW Tut. Total
MCA203 Computer Networks 04 04 04
Subject Code Subject Name Examination Scheme
MCA 203 Computer Networks Theory Marks TW Pract Oral Total
Internal Assessment End Semester Exam        
Test1 (T1) Test2 (T2) Average of T1 & T2          
20 20 20 80 100





Digital Computer Fundamentals and computer architecture.


Course Educational Objectives (CEO):


CEO 1 To help learners get a grounding of basic network components and architecture.
CEO 2 To explore basic networking models.
CEO 3 To learn the way protocols are used in networks and their design issues.


Course Outcomes: At the end of the course, the students should be able to :


MCA203.1 Comprehend the basic concepts of computer networks and data communication systems.
MCA203.3 Analyze basic networking protocols and their use in network design
MCA203.3 Explore various advanced networking concepts.




Sr. No Module / Unit Detailed Contents Hours


1 Basics of Digital Communication Introduction to digital communication,  Signal propagation, Signal types, Signal parameters , Switching & forwarding, Transmission impairments, Attenuation, Delay distortion, Noise, Effects of limited bandwidth, Data rate limits-Nyquist‟s theorem and Shannon‟s theorem. 05
2 Network Organization and Models Basics of computer Network, topology & types of topologies, types of networks(LAN, MAN, WAN), Concept of Intranet & Extranet, Ad-Hoc Networks, types of communications (Asynchronous and synchronous) , modes of communications (simplex, half duplex, full duplex), Protocols, Networking models, ISO-OSI Reference Model, Design issues of the layer ,Internet Model (TCP/IP), Comparison of ISO-OSI & TCP/IP Model 06
3 Networking Devices Connectivity Devices : Passive & Active Hubs, Repeaters,

, Switches (2-Layer Switch, 3-Layer switch(Router), Bridges (Transparent Bridges, Spanning Tree, Bridges, Source Routing Bridges) , Brouters, Gateways.

4 Application, Presentation & Session Layer Principles of Application Layer Protocols, The Web and HTTP, FTP, Telnet, Electronic Mail in the Internet (SMTP, MIME, POP3, IMAP), DNS, Introduction to SNMP. 06
5 Transport layer Transport-Layer Services, port addressing, Multiplexing and Demultiplexing, Principles of Reliable Data Transfer, Congestion Control, TCP‟s Congestion Control.

Quality of Service : Introduction, Queue Analysis, QoS Mechanisms, Queue management Algorithms, Feedback, Resource, Reservation.

6 Network layer Network Service Model, Data gram & Virtual Circuit , Routing Principles, The Internet Protocol,(ipv4 & ipv6) , IP addressing and subnetting, Routing Algorithms., Hierarchical Routing, Routing in the Internet: Intra and inter domain routing; Unicast Routing Protocols RIP, OSPF, BGP, Multicast Routing Protocols : MOSPF, DVMRP.

ATM Networks: Need for ATM, ATM Layers, ATM adaptation Layers, IP over ATM, Multi protocol Label switching (MPLS), Drawbacks of traditional routing methods, Idea of TE, TE and Different Traffic classes

7 Data Link Layer Data Link Layer, Error Detection and Correction Techniques, Multiple Access Protocols, LAN Addresses and ARP & RARP , PPP: The Point-to-Point Protocol , Ethernet standards – IEEE 802.3,  802.5, FDDI, 802.6. 08
8 Physical layer Physical Layer, Types of media  wired and wireless media 02

Reference Books:

  1. Computer Networking: A Top-Down Approach Featuring the Internet , J. F. Kurose and
  2. W. Ross, Seventh Edition, Addison-Wesley.


  1. Computer Networks: Principles, Technologies and Protocols for Network design, N. Olifer and V. Olifer, Wiley India
  2. Data Communication and Networking, B. A. Forouzan, Fourth Edition, McGraw
  3. Computer Networks, Andrew Tenenbaum, Fifith Edition, PHI .
  4. TCP/IP Protocol Suite, B. A. Forouzan, Third Edition, Tata McGraw Hill
  5. Data and  Computer  Communications,     William   Stallings,   Ninth Edition,  Pearson Education