University of Human Development College of Science and Technology Department of Information Technology. Data Communication and Networking

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1 University of Human Development College of Science and Technology Department of Information Technology Data Communication and Networking 1

2 Course Administration and Policies (cont.) Studying slides is not enough; you must read text book chapters and understand the labs and homework assignments! Any thing which I will discuss in class it is your responsibility to pay attention! Best method to contact me is through ! Put Data Communication in subject title when you send me s This will help me identify s Will respond within 1 day (24 hours) 2

3 Course Administration and Policies (cont.) Course Notes (Class Slides), Labs, Books and all other martials will be available on the website at It is your responsibility to download and print a copy of the slides before coming to class. Group-A you have 7 min lecture break from 9:53am 10:00am Group-B you have 7 min lecture break from 12:13am 12:20am 3

4 Course Administration and Policies (cont.) During live class, please: Turn off mobile devices No food/eating, water drinking is ok No speak with classmate If you have questions please raise your hand Not get out during class Be in class before I come to class class attendance/participation will affect final grade Lab/Homework Assignments Every 2 weeks you should be ready for mini-exam if you will be absent I will give you zero! Attendance will be taken in every classes 4

5 Grading Grade Components: 25% - Theory Exam 10% - Practical Exam 10% - Mini-Exam (Quiz), Homework's 5% - Presentation (By Group) 5

6 About me Dana Faiq Abd Instructor at UHD University Education: BSc from University of Koya at Software Engineering MSc from DePaul University USA at Network Engineering & Security Cisco CCNA Certification in (Routing & Switching) Experiences: 3 years and 4 months worked at Korek Telecom (NMC) 3 Months worked at Fiber Alsard (IP Core Engineering) Last year I taught 2nd and 3rd Stages Network Classes at UHD (preferred method for contact) 6

7 About me about yourself please Your Name Any degree, Certification or Courses you have taken in Networking Related work experience (if any) Career Interests 7

8 Data Communications System Operation Subnet / Send Data DHCP/DNS Server Send Data Send Send Data Data Send Data Send Data Enterprise network IP = Ethernet Switch IPv4 Router Mask = Gateway = DNS = Figure 1.1 Data Communication System Operation 8

9 A day in the life HTTP request/reply HTTP HTTP HTTP HTTP HTTP HTTP TCP IP Eth Phy v web page finally (!!!) displayed v HTTP request sent into TCP socket HTTP HTTP HTTP HTTP HTTP TCP IP Eth Phy web server router (runs DHCP) v v v IP datagram containing HTTP request routed to web server responds with HTTP reply (containing web page) IP datagram containing HTTP reply routed back to client 9

10 Theory Class Outlines (cont.) Introducing data communications and defines their components and the types of data exchanged. It also shows how different types of data are represented and how data is flowed through the network. Describe the structure of a networks LANs, WANs, and internetworks (internets). It also introduces the Internet and early history of the Internet, and the issues related to the Internet today. Design different types of network topologies and 10 network criteria

11 Theory Class Outlines (cont.) Concept of protocol layering using TCP/IP and OSI Models, Decapsulation and Encapsulation of data at each layers and logical connection between two identical layers in protocol layering. Functions of the physical layer which is to move data in the form of electromagnetic signals across a transmission medium. For transmission, data needs to be changed to signals. Understanding data and signals which they can be either analog or digital 11

12 Theory Class Outlines (cont.) Obtaining of transmission impairment during the transmission of signals data can be loss or corrupted. one section shows how attenuation, distortion, and noise can impair a signal. Learning of digital-to-digital conversion, analog to digital conversion, digital to analog conversion. Introduces the transmission media and defines its position in the Internet model. Classifying transmission media into two broad categories: guided and unguided media. Describe twisted-pair cables and their characteristics and applications. Next, describe coaxial cables and their characteristics and applications. Finally, describe fiber-optic cables and their characteristics and applications. 12

13 Theory Class Outlines (cont.) Introduce unguided media radio waves and their characteristics and applications. Then, describe microwaves and their characteristics and applications. Finally, describe infrared waves and their characteristics and applications. 13

14 Practical Class Outlines Introduction to Network Components (Devices: Router, Switch, Server, Hub, Repeater, Media Types: Wire and Wireless) Introduction to Packet Tracer Components and How to use them. Introduction to Basic IOS Software (Switch) using Packet Tracer Introduction to Network Topology Design (Star, Ring, Mesh) Design LAN and WAN and interconnection between them. (Hardware Device and Media). Configure Telnet to the router from Host and verify the Telnet password. 14

15 Practical Class Outlines (cont.) Assign IP address to a LAN Topology and look at Mac table and PING between devices. Using Packet Tracer. Configuring Basic Switch Management Connect to the switch using a console connection Navigate through various CLI modes Using Wireshark to analyze TCP/IP Addresses and Protocols! Draw a Network Topology for client and server requesting packets from server and analysis packets for all IOS layers. (PING, TRACEROUTE, Web Browse) IOS Configuration (switching and Routing) using Packet Tracer 15

16 Exams and Assignments Compositional 1) Explain what is default gateway? why do switches need to have default gateways? Answer/ Default gateway is a mechanism to forward packet to distant networks. so IP packets with destination IP addresses outside the local will be forwarded to the default gateway. 2) True or false type and correct false Answers In Half duplex lines data can go only in one direction? Answer/ false. because half duplex lines let data to 16 go in both directions but in different times.

17 Exams and Assignments (cont.) 3) Multiple Choice The largest geographic area a wide area network!(wan) can span is. A. a town B. a state C. a country D. the world 17

18 Exams and Assignments (cont.) 4) Match questions with correct answers In the work area below, match the OSI model layer on the left to its description on the right. 18

19 Exams and Assignments (cont.) 5) Draw diagram and illustrate by graph Identify the five components of a data communications system an illustrate by drawing a diagram? Answer/ 19

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