BSc CS IT Computer Network

Computer Networks

Course Title: Computer Networks                                                    Full Marks: 60 + 20 + 20

Course No: CSC258                                                                          Pass Marks: 24 + 8 + 8

Nature of the Course: Theory + Lab                                                Credit Hrs: 3

Semester: IV

Course Description: This course introduces concept of computer networking and discuss the different layers of networking model.

Course Objective: The main objective of this course is to introduce the understanding of the concept of computer networking with its layers, topologies, protocols & standards, IPv4/IPv6 addressing, Routing and Latest Networking Standards

Course Contents:

Unit 1: Introduction to Computer Network (6Hrs.)

               Definitions, Uses, Benefits

               Overview of Network Topologies (Star, Tree, Bus,...)

               Overview of Network Types (PAN, LAN, CAN, MAN,...)

               Networking Types (Client/Server, P2P)

               Overview of Protocols and Standards

               OSI Reference Model

               TCP/IP Models and its comparison with OSI.

               Connection and Connection-Oriented Network Services

               Internet, ISPs, Backbone Network Overview

Unit 2: Physical Layer and Network Media (4Hrs.)

               Network Devices: Repeater, Hub, Switch, Bridge, Router

               Different types of transmission medias:

                       i. wired: twisted pair, coaxial, fiber optic

                       ii. Wireless: Radio waves, micro waves, infrared

               Ethernet Cable Standards (UTP & Fiber cable standards)

               Circuit, Message & Packet Switching

               ISDN: Interface and Standards

Unit 3: Data Link Layer (8Hrs.)

               Function of Data Link Layer (DLL)

               Overview of Logical Link Control (LLC) and Media Access Control (MAC)

               Framing and Flow Control Mechanisms

               Error Detection and Correction techniques

               Channel Allocation Techniques (ALOHA, Slotted ALOHA)

               Ethernet Standards (802.3 CSMA/CD, 802.4 Token Bus, 802.5 Token Ring)

               Wireless LAN: Spread Spectrum, Bluetooth, Wi-Fi

               Overview Virtual Circuit Switching, Frame Relay& ATM

               DLL Protocol: HDLC, PPP

Unit 4: Network Layer (10Hrs.)

               Introduction and Functions

               IPv4 Addressing & Sub-netting

               Class-full and Classless Addressing

               IPv6 Addressing and its Features

               IPv4 and IPv6 Datagram Formats

               Comparison of IPv4 and IPv6 Addressing

               Example Addresses: Unicast, Multicast and Broadcast

               Routing

                                                    Introduction and Definition

        Types of Routing (Static vs Dynamic, Unicast vs Multicast, Link State vs Distance Vector, Interior vs Exterior)

                                     Path Computation Algorithms: Bellman Ford, Dijkstra’s

                                     Routing Protocols: RIP, OSPF & BGP

                    Overview of IPv4 to IPv6 Transition Mechanisms

                     Overview of ICMP/ICMPv6&NATing

                     Overview of Network Traffic Analysis

                     Security Concepts: Firewall & Router Access Control

Unit 5: Transport Layer (6Hrs.)

               Introduction, Functions and Services

               Transport Protocols: TCP, UDP and Their Comparisons

               Connection Oriented and Connectionless Services

               Congestion Control: Open Loop & Closed Loop, TCP Congestion Control

               Traffic Shaping Algorithms: Leaky Bucket & Token Bucket

               Queuing Techniques for Scheduling

               Introduction to Ports and Sockets, Socket Programming

Unit 6: Application Layer (7Hrs.)

               Introduction and Functions

               Web &HTTP

               DNS and the Query Types

               File Transfer and Email Protocols: FTP, SFTP, SMTP, IMAP, POP3

               Overview of Application Server Concepts: Proxy, Web, Mail

               Network Management: SNMP

Unit 7: Multimedia &Future Networking (4Hrs.)

               Overview Multimedia Streaming Protocols: SCTP

               Overview of SDN and its Features, Data and Control Plane

               Overview of NFV

               Overview of NGN

Laboratory Works:

The lab activities under this subject should accommodate at least the following;

1.        Understanding of Network equipment, wiring in details

2.        OS (Ubuntu/CentOS/Windows) installation, practice on basic Networking commands

(ifconfig/ipconfig, tcpdump, netstat, dnsip, hostname, route...)

3.        Overview of IP Addressing and sub-netting, static ip setting on Linux/windows machine, testing

4.        Introduction to Packet Tracer, creating of a LAN and connectivity test in the LAN, creation of VLAN and VLAN trunking.

5.        Basic Router Configuration, Static Routing Implementation

6.        Implementation of Dynamic/interior/exterior routing (RIP, OSPF, BGP)

7.        Firewall Implementation, Router Access Control List (ACL)

8.        Packet capture and header analysis by wire-shark (TCP,UDP,IP)

9.        DNS, Web, FTP server configuration (shall use packet tracer, GNS3)

10.     Case Study: Network Operation Center Visit (ISP, Telecom, University Network)

11.     LAB Exam, Report and VIVA

Text Books:

1.        Data Communications and Networking, 4^th Edition, Behrouz A Forouzan. McGraw-Hill

2.        Computer Networking; A Top Down Approach Featuring The Internet, 2nd Edition, Kurose James F., Ross W. Keith PEARSON EDUCATION ASIA