8/14/2019 Week1 Lec1 Comp Networks

1/18

CSE 320 Computer NetworksCSE 320 Computer Networks

Dr. Zawar Hussain ShahDr. Zawar Hussain Shah

Assistant ProfessorAssistant Professor

Department of Electrical EngineeringDepartment of Electrical Engineering

SEECS, NUSTSEECS, NUST

Lecture 1Lecture 1

8/14/2019 Week1 Lec1 Comp Networks

2/18

Todays LectureTodays Lecture

What is a Computer Network?What is a Computer Network?

Applications of Computer NetworksApplications of Computer Networks

Why Study Computer Networks?Why Study Computer Networks?

Grading PolicyGrading Policy

Course ObjectivesCourse Objectives

Course ContentsCourse Contents

BooksBooks

PoliciesPolicies

Contact DetailsContact Details

8/14/2019 Week1 Lec1 Comp Networks

3/18

What is a ComputerWhat is a Computer

Network?Network?

A Computer Network is an interconnected group ofautonomous computing nodes which can meaningfully and

(preferably) controllably communicate with one-another.

Rules and conventions that allow meaningful andunambiguous communication between members of a

Computer Network are collectively called Network

Protocols.

In real-life networks, often a set of related functions are

handled by a group of closely tied protocols which

constitute a Protocol Family (also known as a Protocol

Suite).

8/14/2019 Week1 Lec1 Comp Networks

4/18

Defining a ComputerDefining a Computer

NetworkNetwork

A Computer Network is an interconnected group ofautonomous computing nodes which:

Use a well-defined, mutually-agreed set of rules

and conventions known as Protocols,Interact with one-another, if duly authenticated and

authorized

Allow resource-sharing preferably in a predictableand controllable manner.

8/14/2019 Week1 Lec1 Comp Networks

5/18

Applications of ComputerApplications of Computer

NetworksNetworks

8/14/2019 Week1 Lec1 Comp Networks

6/18

Why Study Computer Networks?Why Study Computer Networks?

Increased productivity through efficient usage ofIncreased productivity through efficient usage of

networking technology.networking technology.

Skills to develop state of the art innovations.Skills to develop state of the art innovations. Improved employment and earning potential.Improved employment and earning potential.

Masters and PhDsMasters and PhDs

CCNA, MCSE short courses.CCNA, MCSE short courses.

8/14/2019 Week1 Lec1 Comp Networks

7/18

Course ObjectivesCourse Objectives

Objectives of this course are,

1. Conceptual introduction to Computer Networks

and its design principles.

2. Understand the TCP/IP protocol suite and the

working of the Internet.

3. Form a basic understanding of the principlesupon which the global Internet was designed.

8/14/2019 Week1 Lec1 Comp Networks

8/18

Course ContentsCourse Contents

What is the Internet?What is the Internet?

Protocols Layers and Services ModelProtocols Layers and Services Model

History of InternetHistory of Internet

Application LayerApplication Layer HTTP, FTPHTTP, FTP

Transport LayerTransport Layer

TCP ,UDPTCP ,UDP

Network LayerNetwork Layer IPv4 addressingIPv4 addressing

8/14/2019 Week1 Lec1 Comp Networks

9/18

Course ContentsCourse Contents

Link LayerLink Layer Error Detection TechniquesError Detection Techniques Hubs, Bridges and SwitchesHubs, Bridges and Switches

Multimedia NetworkingMultimedia NetworkingSIPSIP Voice over IP (VoIP)Voice over IP (VoIP)

Network SecurityNetwork Security

Principles of CryptographyPrinciples of Cryptography

8/14/2019 Week1 Lec1 Comp Networks

10/18

Text BookText Book

8/14/2019 Week1 Lec1 Comp Networks

11/18

Reference BooksReference Books

8/14/2019 Week1 Lec1 Comp Networks

12/18

Grading PolicyGrading Policy

Quizzes : 10 %

One Hour Tests : 30 %

Assignments : 05 %

Research Paper : 05 %

Final Exam : 50 %

8/14/2019 Week1 Lec1 Comp Networks

13/18

PoliciesPolicies

Bring your own calculator, pen paper etc..Bring your own calculator, pen paper etc..

You will not be allowed to borrow anythingYou will not be allowed to borrow anything

from anyone during any quiz/test.from anyone during any quiz/test.

No late work will be accepted (unlessNo late work will be accepted (unless

arrangements have been made in advance).arrangements have been made in advance).

Ask questions; participate actively in class.Ask questions; participate actively in class.

You are allowed to talk to the instructor only.You are allowed to talk to the instructor only.

8/14/2019 Week1 Lec1 Comp Networks

14/18

PoliciesPolicies

You are responsible for what is covered inYou are responsible for what is covered in

class even if you dont attend the class.class even if you dont attend the class.

Deficiency in attendance may lead toDeficiency in attendance may lead to

termination or relegation.termination or relegation.

You are encouraged to help each other withYou are encouraged to help each other with

your homework assignments but you mustyour homework assignments but you must

submit your own work.submit your own work.

If you are found to be cheating, you will failIf you are found to be cheating, you will fail

the assignment/quiz.the assignment/quiz.

8/14/2019 Week1 Lec1 Comp Networks

15/18

PoliciesPolicies

If you have any learning disabilities or specialIf you have any learning disabilities or special

needs, please let me know in advance throughneeds, please let me know in advance through

email or personal meeting.email or personal meeting.

Quizzes are mostly unannounced, however,Quizzes are mostly unannounced, however,

announced quizzes can also be taken.announced quizzes can also be taken.

8/14/2019 Week1 Lec1 Comp Networks

16/18

How to Survive thisHow to Survive this

CourseCourse

Materials soundMaterials sound simplesimple andand easyeasy,, butbut they are notthey are not..

Do not leave everything to the exam night!.Do not leave everything to the exam night!.

Not copy the homework!, try them by yourself.Not copy the homework!, try them by yourself.

You can read the book by yourself, but the classYou can read the book by yourself, but the classmakes the life for you easier.makes the life for you easier.

You will learn more in the class then by simplyYou will learn more in the class then by simplyreading the book and other course material.reading the book and other course material.

8/14/2019 Week1 Lec1 Comp Networks

17/18

Contact DetailsContact Details

Office:Office:

Faculty Block, First floor, A-207Faculty Block, First floor, A-207Phone No: 051-90852129Phone No: 051-90852129

Consulting Hours:Consulting Hours:

Wednesday 1000 1100 hrsWednesday 1000 1100 hrs Email:Email:

zawar.hussain@seecs.edu.pkzawar.hussain@seecs.edu.pk Exceptional meeting:Exceptional meeting:

Send me an email and get time.Send me an email and get time.

8/14/2019 Week1 Lec1 Comp Networks

18/18