WITH EFFECT FROM THE ACADEMIC YEAR 2016 - 2017

CS 355

COMPUTER NETWORKS

Credits                                                                  4

Objectives:

• To understand the state-of-the-art technology in network protocols, network architecture and networked systems
• To learn the design principles of network infrastructure
• To gain proficiency in network programming

Outcomes:

This course enables the student to develop and demonstrate the following

• Ability to compare different network architectures
• Ability to understand the design principles of networking
• Ability to develop applications using network programming

UNIT-I

Review of ISO OSI Reference Model and TCP/IP Architectures.

Network Layer: Design issues, Services, Internal organization, Comparison of Virtual circuits and Datagram subnets. Routing Algorithms: The Optimality principle, Shortest path routing, Flooding, Flow-based algorithms, Distance vector, Link state, Hierarchical algorithms, Broadcast and Multicast routings. Congestion control algorithms: General principles, Traffic shaping, Congestion control in virtual circuit subnets, Choke packets, Load shedding, Jitter control and Congestion control for multicasting, Quality of Service (QoS)

UNIT-II

Internet working: How networks differ, Concatenated virtual circuits, Connectionless internet working, Tunneling, Internetwork routing, Fragmentation and Firewalls.

The Network Layer of the Internet: The IP protocol, IP addresses, Subnets, Internet control protocols, Gateway routing protocols, Multicasting, CIDR.

UNIT-III

Transport Layer: Service primitives, Addressing, Establishing a connection, Releasing a connection, Flow control, Buffering, Multiplexing and Crash recovery.

Internet Transport Protocols (TCP and UDP): The TCP service model, The TCP protocol, The TCP Segment Header, TCP connection management, Transmission policy: Congestion control, Timer management and UDP, Performance issues.

UNIT-IV

Application Layer:

Domain Name System: DNS name space, Resource records, Name services.

SMTP and MIME, HTTP, SNMP, Telnet, ftp, Multimedia.

UNIT-V

Socket programming: Socket address, Elementary socket system calls, Advanced socket system calls, Reserved ports, Socket options, Asynchronous I/O, Input/Output Multiplexing, Out-of-Band data, Sockets and Signals, Internet Super Server, DNS.

Suggested Reading:

1. Andrew S. Tanenbaum, David J. Wetherall, Computer Networks, 5th Edition, Pearson, 2012

2. Chwan-Hwa (John) Wu, J. David Irwin, Introduction to Computer Networks and Cyber Security, CRC Press, 2013

3. James F. Kurose and Keith W. Ross, Computer Networking: A Top-Down Approach Featuring the Internet, 5th Edition, Addison-Wesley, 2012

4. W. Richard Stevens, Unix Network Programming, Prentice Hall/Pearson Education, 2009

5. W. Richard Stevens, Andrew M Rudoff, Bill Fenner, Unix Network Programming: Networking APIs: Sockets and XTI (Volume 1) 3rd Edition, PHI