ECE 409: DATA COMMUNICATIONS AND NETWORKS
ECE 409 /ECT 415
Data Communication and Network
Prof. A. I. Oluwaranti
adeniran.oluwaranti@elizadeuniversity.edu.ng
Lecture 1:
Class: Tuesdays (8am – 10am)
Tutorial: Friday (8am – 9am)
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ECE 409 /ECT 415
Data Communication and Network
Prof. A. I. Oluwaranti
[email protected]
Lecture 1:
Class: Tuesdays (8am – 10am)
Tutorial: Friday (8am – 9am)
Preambles
- (^) Please be punctual to classes and Tutorials
- (^) Please No phone calls or texting during classes!
- (^) Attendance is a requirement (at least 70%).
- (^) There may be short quizzes during lectures.
- (^) Lecture slides, assignments, etc. will be made
available from time to time.
Lecture Outline
Week Topics 5 Criteria for a good Networks (Performance, Reliability and Security) Networks Topology (Bus, Star, Ring, Hybrid, FDDI) characteristics, benefits and drawbacks. 6 Networks Protocols. Protocol elements (Syntax, Semantics and Timing), Protocol Flow control. Network Architecture (Master-Slave, Peer-to-Peer and Client Server) characteristics, benefits and drawbacks 7 Overview of Network Components: Hardware (Workstations, Servers, NICs, Hubs, Switches, Router, Bridge, Brouter etc), Software (OS, Shell Scripts, Protocols, etc) 8 Overview of Networks Technologies. Basic concepts, properties, benefits and drawbacks of each Technologies. Introduction to Ethernet (CSMA/CD concept)
Lecture Outline
Week Topics 9 Introduction to TCP/IP model, Overview of TCP/IP Architecture, Comparison of OSI and TCP/IP models, Demerits of TCP/IP model, Internet Protocols (TCP, IP. UDP, ICMP, ARP, RARP, VoIP, HTTP etc.) 10 IPv4, IP address Classification (classful and Classless address) Network Address Translation (NAT) Classless InterDomain Routing (CIDR). IP address Calculation. Using Ipcalc. Challenges of IPv4 run out. 11 Introduction to IPv6. IPv6 Addresses, Categories of Addresses, IPv Packet Format, Migrating to IPv6 (Compatilibity to IPv4 challeges). Comparison of IPv4 and IPv6. Internet Protocol Address Management (IETF, ARIN, RIPE, AfriNIC) 12 Introduction to Wireless Networks Technologies: WPAN (Bluetooth) WLAN (Wifi IEEE802.11x), WWAN (Broadband IEEE802.16).
Recommended Textbooks:
• Digital Network by Andrew Tanenbaum
• Data Communications and Networking. Forth Edition. By
Behrouz A. Forouzan
• Internet Core Protocol. A Definitive Guide By Eric A. Hall
A Brief History of Communications
• In the Industrial Revolution, machines transformed
work and new organizational forms came into
existence.
• The use of computers and data communications
networks has been termed the ‘second industrial
revolution’, because it is revolutionizing the way
people work and communicate.
• One such factor is the information lag :
- (^) In the 19th^ century, information that took days or weeks to be
transmitted long distances.
- (^) In the early 20th^ century it took minutes or hours.
- (^) Today, telecommunications networks transmit huge quantities of information in a fraction of a second.
Chronology of Internet Evolution continued
- (^1986) NSFnet backbone created
- (^1990) ARPANET retired
- (^1991) Gopher introduced
- (^1991) WWW invented
- (^1992) Mosaic introduced
- (^1995) Internet backbone privatized
- (^1996) OC-3 (155 Mbps) backbone built
Growth of the Internet
• Exponential growth in the 1990s (Web technology is a
major factor)
• More than 30-million computers were attached to the
Internet in 1998
• Doubling the size every 9 to 12 month in the 1990s
the original ARPANET design
The NSFNET backbone in 1988.
Datacom Definition
- (^) The term telecommunication means communication at a distance. The word data refers to information presented in whatever form is agreed upon by the parties creating and using the data
- (^) Data communications are the exchange of data between two devices via some form of transmission medium; be it wired or wireless.
- (^) For data communications to occur, the communicating devices must be part of a communication system made up of a combination of hardware (physical equipment) and software (programs).
Components of a Datacom System
There are five (5) Data Communication System
1. Message
- (^) the information (data) to be communicated. Popular forms of information
include text, numbers, pictures, audio, and video.
2. Sender
- (^) The sender is the device that sends the data message. It can be a
computer, workstation, telephone handset, video camera, and so on.
3. Receiver
- (^) The receiver is the device that receives the message. It can be a computer,
workstation, telephone handset, television, and so on.
Components of a Datacom System (contd)
- Transmission medium
- (^) The transmission medium is the physical path by which a message
travels from sender to receiver. Some examples of transmission media
include twisted-pair wire, coaxial cable, fiber-optic cable, and radio
waves.
- Protocol.
- (^) A protocol is a set of rules that govern data communications. It
represents an agreement between the communicating devices.
This relationship is illustrated in Figure 1