The document outlines the teaching and examination scheme for a Computer Networks course (CSC501) at Thadomal Shahani Engineering College for the academic year 2023-2024. It details the course structure, including contact hours, marking schemes, syllabus modules covering topics such as networking fundamentals, data link layers, network architecture, and protocols, as well as course outcomes relating to network design and protocol analysis. Additional sections address the introduction to computer networks, characteristics, protocols, and communication types including unicast, multicast, and broadcast.

1. Sachin Desai
( Subject & Practical I/C)
THADOMAL SHAHANI ENGG. COLLEGE
AI & DS DEPARTMENT
TE / SEM – V / A. Y. 2023-2024
Computer Network
Introduction

2. Teaching & Examination Scheme
 Computer Networks
1. Course Code  CSC501 (TH)/ CSL501 (PR)
2. Contact Hours  Computer Networks  02 (Theory)
Web Computing and Network Lab  02 (Practical)
3. Mark Scheme (CSC 501) (TH)
 TH : 80M
 IA : 20M
(CSL501) (PR)
 Term Work : 25M
Experiments – 15 M
Attendance TH/PR -- 05 M
Assignment -- 05 M
 Oral & Practical : 25M

3. Syllabus
Module Detailed Content Hours
1 Introduction to Networking
1.1 Introduction to computer network, Network Devices, Network topology, Switching:
Circuit-Switched Networks, Packet Switching, Network Types:
LAN, MAN, WAN
6
1.2 Reference models: Layer details of OSI, TCP/IP models. Difference between OSI
and TCP/IP
2 Physical and Data Link Layer 10
2.1 Physical Layer: Communication mechanisms and Electromagnetic Spectrum, Guided
Transmission Media: Twisted pair, Coaxial, Fiber optics
2.2 Data Link Layer: DLL Design Issues (Services, Framing, Error Control, Flow Control),
Error Detection and Correction (Hamming Code, CRC, Checksum) , Elementary Data
Link protocols , Stop and Wait, Sliding Window (Go Back N, Selective Repeat),
Medium Access Control sublayer Channel Allocation
problem, Multiple access Protocol( ALOHA, Carrier Sense Multiple Access,

4. Syllabus
(CSMA/CD)).
3 Network Layer 7
3.1 Network Layer: Communication Primitives, IPv4 Addressing (classful and classless),
Subnetting, IPv4 Protocol, Network Address Translation (NAT), IPv6 addressing, IPv4
vs IPv6 addressing, Routed vs Routing protocols, Classification of Routing algorithms,
Shortest Path algorithms (Dijkastra‗s), Link state routing, Distance Vector Routing
4 Transport Layer and Application Layer 7
4.1 Transport Layer: Service primitives, Sockets, Connection management
(Handshake), UDP, TCP, TCP state transition, TCP timers, TCP Flow control (sliding
Window)
4.2 Application Layer: HTTP, SMTP, Telnet, FTP, DHCP, DNS and Types of Name
Server
5 Enterprise Network Design 5
The Cisco Service Oriented Network Architecture, Network Design Methodology,
Top-Down vs Bottom up Approach to Network Design, Classic Three-Layer Hierarchical
Model: Core, Access and Distribution Layers, Campus Design Considerations, Designing
a Campus Network Design
Topology.
6 Software Defined Networks 4
Introduction to Software Defined Network, Fundamental Characteristics of SDN, SDN
Building Blocks, Control and Data planes, SDN Operation OpenFlow messages –
Controller to Switch, Symmetric and Asynchronous
messages, SDN OpenFlow Controllers: PoX, NoX Architecture.

5. Course Outcomes:
CSC501.1
Demonstrate the concepts of data communication at physical layer and compare ISO
– OSI model with TCP/IP model.
CSC501.2 Explore different design issues at data link layer.
CSC501.3 Design the network using IP addressing and sub netting / super netting schemes.
CSC501.4 Analyze transport layer protocols and congestion control algorithms.
CSC501.5 Explore protocols at application layer
CSC501.6 Understand the customer requirements and Apply a Methodology to Network
Design and software defined networks

6. Introduction to Computer Network
Fundamentals
What is Computer Network ?
- A Computer network is a set of nodes connected by
communication links.
- A node can be a computer, printer or any other device capable of
sending/ receiving data generated by other nodes in the network.
Example of Nodes
Computer
Server
Printer
Security Camera
Many more ( Switches, Bridges,
Routers, etc.)

7. Introduction to Computer Network
What is Computer Network ?
- A Communication link can be a wired link or wireless link.
- The link carries the information.
Links ( Medium) Wired Cable
Wireless : Air

8. Introduction to Computer Network
Example of Computer Network

9. Introduction to Computer Network
Example of Computer Network
END
DEVICES
INTERMEDIARY NODES
PC Router
Printer Wireless Router
Server Cell Tower
Tablet Modem
Internet Cloud

10. Introduction to Computer Network
Benefits
-- Resource Sharing: Share files, printers, and other resources.
-- Communication: Email, instant messaging, video conferencing,
etc.
-- Centralized Data Storage: Access data from any connected
device.
-- Collaboration: Work on shared documents and projects.
-- Internet Access: Connect to the World Wide Web.

11. Introduction to Computer Network
Basic characteristics of Computer Network
-- Fault tolerance
-- Scalability
-- Quality of Service
-- Security

12. Introduction to Computer Network
Basic characteristics of Computer Network
-- Fault tolerance
The ability to :
1. Continue working despite failures
2. Ensure no loss of service

13. Introduction to Computer Network
Basic characteristics of Computer Network
-- Scalability
The ability to :
1. Grow based on the needs
2. Have good performance after growth
Example : Internet

14. Introduction to Computer Network
Basic characteristics of Computer Network
-- Quality of Service
The ability to :
1. Set Priorities
2. Manage data traffic to reduce data loss, delay etc.

15. Introduction to Computer Network
Basic characteristics of Computer Network
-- Security
The ability to prevent :
1. Unauthorized access
2. Misuse
3. Forgery
The ability to provide :
4. Confidentiality
5. Integrity
6. Availability

16. Introduction to Computer Network
Basic characteristics of Computer Network
-- Security

17. Introduction to Computer Network
Network Protocols and Communications
-- Data Communication
-- Data flow
-- Importance of protocols in Computer Network
-- Elements of protocol

18. Introduction to Computer Network
Network Protocols and Communications
-- Data Communication
Data Communications are the exchange of data between two nodes
via some form of link (transmission medium) such as a cable.
-- Data flow
- Simplex
- Half Duplex
- Full Duplex

19. Introduction to Computer Network
Network Protocols and Communications
-- Data flow
- Simplex
1. Communication is always unidirectional
2. One device can transmit and other device will receive.
3. Example : Keyboards, Traditional monitors
- Half Duplex
4. Communication is in both directions but not at the same time.
5. If one device is sending the other device can only receive and
vice versa.
6. Example : Walkie – Talkies.

20. Introduction to Computer Network
Network Protocols and Communications
-- Data flow
- Full Duplex
1. Communication is in both directions simultaneously.
2. Device can send and receive at the same time.
3. Example : Telephone line.

21. Introduction to Computer Network
Network Protocols and Communications
- Protocols in Computer Network
All communication schemes will have the following things in
common
1. Source or Sender
2. Destination or Receiver
3. Channels or Media
Rules for protocols governs all methods of communication.
What if there are no protocols

22. Introduction to Computer Network
Network Protocols and Communications
Protocols in Computer Network
- Protocol = Rule
- It is set of rules that govern data communication.
- Protocol determines :
1. What is communicated ?
2. How it is communicated?
3. When it is communicated ?
Protocols - Human Communication
- Protocols are necessary for human communication and include :
1. An identified sender/ Receiver
2. Common Language and grammar
3. Speed and timing of delivery
4. Confirmation or Acknowledgement requirements

23. Introduction to Computer Network
Network Protocols and Communications
Protocols - Network Communication
- Protocols are used in network communications also define ( Elements of
Protocol):
1. Message encoding
2. Message formatting and encapsulation
3. Message Size
4. Message timing
5. Message Delivery options

24. Introduction to Computer Network
Protocols - Network Communication
- Protocols are used in network communications also define ( Elements of
Protocol):
1. Message encoding
Message Source Encoder (Signal) Transmitter
Transmission
Medium
Receiver
Decoder (Signal)
Message
Destination

25. Introduction to Computer Network
Message encoding

26. Introduction to Computer Network
Protocols - Network Communication
- Protocols are used in network communications also define ( Elements of Protocol):
2. Message formatting and encapsulation
- Agreed Format
- Encapsulate the information to identify the sender and the receiver
rightly.

27. Introduction to Computer Network
Protocols - Network Communication
- Protocols are used in network communications also define ( Elements of Protocol):
3. Message Size
- Human break long messages into smaller parts or sentences.
- Long messages must also be broken into smaller pieces to travel across a
network.

28. Introduction to Computer Network
Protocols - Network Communication
- Protocols are used in network communications also define ( Elements of
Protocol):
4. Message timing
- Flow Control
- Response Timeout ( Ack / Retransmission)
5. Message Delivery options
- Unicast
- Multicast
- Broadcast

29. Introduction to Computer Network
Protocols - Network Communication
5. Message Delivery options
- Unicast
- Multicast
- Broadcast
Unicast
- One Sender and One Receiver
Multicast
- Sender sends data to set of receivers, not to all.
Broadcast
- Sender sends data to all participants in the network.

30. Introduction to Computer Network
- Peer to Peer N/W
1. No Centralized administration
2. All peers are equal
3. Simple sharing applications
4. Not scalable

31. Introduction to Computer Network
- Client Server Network
1. Centralized Administration
2. Request- Response model
3. Scalable
4. Server may be overloaded.