Introduction1-1 Introduction to Computer Networks Our goal:  get “feel” and terminology  more depth, detail later in course  approach:  use Internet.

Slides:

Advertisements

Similar presentations

Introduction 2 1: Introduction.

Advertisements

James 1:5 If any of you lacks wisdom, he should ask God, who gives generously to all without finding fault, and it will be given to him.

T.Sharon-A.Frank 1 Internet Resources Discovery (IRD) Introduction to the Internet/WWW.

Kemal AkkayaWireless & Network Security 1 Department of Computer Science Southern Illinois University Carbondale CS591 – Wireless & Network Security Lecture.

Introduction1-1 Chapter 1: Introduction  get context, overview, “feel” of networking  more depth, detail later in course  approach: m descriptive m.

Introduction1-1 Communication Systems Lecturer Dr. Marina Kopeetsky Lecture 1: Introduction Computer Networking: A Top Down Approach Featuring the Internet,

Lecture 1 Internet Overview: roadmap 1.1 What is the Internet? 1.2 Network edge  end systems, access networks, links 1.3 Network core  network structure,

CS 325 Computer Networks Sami Rollins Fall 2003.

Lecture Chapter 1: roadmap 1.1 What is the Internet? 1.2 Network edge  end systems, access networks, links 1.3 Network core  network structure,

1-1 Foundation Objectives: 1.1 What’s the Internet? 1.2 Network edge 1.3 Network core 1.4 Network access and physical media 1.5 Internet structure and.

1 Day 01 - The Internet. 2 Chapter 1 Introduction Computer Networking: A Top Down Approach Featuring the Internet, 3 rd edition. Jim Kurose, Keith Ross.

Networking Based on the powerpoint presentation of Computer Networking: A Top Down Approach Featuring the Internet, Third Edition, J.F. Kurose and K.W.

Lecture 1 Overview: roadmap 1.1 What is computer network? the Internet? 1.2 Network edge  end systems, access networks, links 1.3 Network core  network.

Lecture 1 Internet Overview: roadmap 1.1 What is the Internet? 1.2 Network edge  end systems, access networks, links 1.3 Network core  network structure,

Introduction1-1 Chapter 1: Introduction Our goal:  get context, overview, “feel” of networking  more depth, detail later in course  approach: m descriptive.

1 Computer Networks Transport Layer Protocols. 2 Application-layer Protocols Application-layer protocols –one “piece” of an app –define messages exchanged.

Introduction1-1 CS 325 Computer Networks Sami Rollins Fall 2005.

What’s the Internet: “nuts and bolts” view

1-1 CS 456 – Computer Networks □ Instructor: Ian Goldberg □ Classes: Tuesday and Thursday 8:30 – 9:50am MC 4063 (section.

1: Introduction1 Part I: Introduction Goal: r get context, overview, “feel” of networking r more depth, detail later in course r approach: m descriptive.

Chapter 1 Introduction Computer Networking: A Top Down Approach 6th edition Jim Kurose, Keith Ross Addison-Wesley March 2012 A note on the use of these.

Lecture 1 Internet CPE 401 / 601 Computer Network Systems slides are modified from Dave Hollinger and Daniel Zappala Lecture 1 Introduction.

Communications Recap Duncan Smeed. Introduction 1-2 Chapter 1: Introduction Our goal: get “feel” and terminology more depth, detail later in course.

Introduction1-1 Chapter 1 Introduction Computer Networking: A Top Down Approach, 4 th edition. Jim Kurose, Keith Ross Addison-Wesley, July A note.

Computer Networking Introduction, Part I. Lecture #1: Part I: Introduction Chapter goal: get context, overview, “feel” of networking.

Introduction1-1 Chapter 1: Introduction Our goal:  get “feel” and terminology  more depth, detail later in course  approach:  use Internet as example.

CS448 Computer Networking Chapter 1 Introduction to Computer Networks Instructor: Li Ma Office: NBC 126 Phone: (713)

RSC Part I: Introduction Redes y Servicios de Comunicaciones Universidad Carlos III de Madrid These slides are, mainly, part of the companion slides to.

Sharif University of Technology, Kish Islan Campus 1 Internet networking basics These power point slides have been adapted from slides prepared by authors.

Instructor: Christopher Cole Some slides taken from Kurose & Ross book IT 347: Chapter 1.

Introduction 1-1 Chapter 1: Introduction Our goal:  get “feel” and terminology  more depth, detail later in course  approach:  use Internet as example.

Introduction1-1 Course Code:EE/TE533 Instructor: Muddathir Qamar.

CS 3214 Computer Systems Godmar Back Lecture 23. Announcements Project 5 due Dec 8 Exercise 10 handed out Exercise 11 coming before Thanksgiving CS 3214.

Introduction1-1 Part of slides provided by J.F Kurose and K.W. Ross, All Rights Reserved Chapter 1 Computer Networks and the Internet Computer networking.

Ch 1. Computer Networks and the Internet Myungchul Kim

The Transport Layer application transport network data link physical application transport network data link physical application transport network data.

1 End-user Protocols, Services and QoS. 2 Layering: logical communication application transport network link physical application transport network link.

Introduction1-1 Data Communications and Computer Networks Chapter 1 CS 3830 Lecture 1 Omar Meqdadi Department of Computer Science and Software Engineering.

Basic Concepts of Internet Technology What is a computer network? Isolated computers vs. networked computers internetworking The Internet What’s a protocol?

Introduction 1-1 Networking Admin  1 to 4 lectures a week for 11 weeks for a total of 23 lectures  Interleaves with Functional Programming  First prac.

1 Network Core and Network Edge By Muhammad Hanif To BS IT 4 th Semester.

Introduction1-1 Chapter 1 Computer Networks and the Internet Computer Networking: A Top Down Approach Featuring the Internet, 2 nd edition. Jim Kurose,

Introduction1-1 Chapter 1 Computer Networks and the Internet Computer Networking: A Top Down Approach Featuring the Internet, 2 nd edition. Jim Kurose,

Computer Networking II Course Outline - introduction -Network Layer -Wireless and Mobile Networks -Multimedia Networking -Network Management -Network Security.

Introduction1-1 Computer Network (  Instructor  Ai-Chun Pang 逄愛君, m Office Number: 417  Textbook.

Chapter 1, slide: 1 Summer 2010 CS 372 Introduction to Computer Networks* Monday, June 21, 2010 School of Electrical Engineering and Computer Science Oregon.

1: Introduction1 Internet Services and Protocols Adapted from “Computer Networking: A Top Down Approach Featuring the Internet” Kurose and Ross, Addison.

Introduction 1-1 1DT057 Distributed Information Systems Chapter 1 Introduction.

IP and Networking Basics Selection of slides taken from Internet Society Workshop Resource Centre:

1 Ram Dantu University of North Texas, Practical Networking.

CS 5565 Network Architecture and Protocols

Graciela Perera Introduction Graciela Perera

CS 3214 Computer Systems Networking.

Day 01 - The Internet.

Part 0: Networking Review

Slides taken from: Computer Networking by Kurose and Ross

1.2 The Network Edge Beginning at the edge of a network we are looking at the components with which we are most familiar - namely, the computers that we.

Chapter 1: Introduction

CS 3214 Computer Systems Lecture 21 Godmar Back.

Part I: Introduction Chapter goal:

An Aleksandar, Accounts have been created for any students in EECS 340 who did not already have one. Physical access to the labs has.

CS 3214 Computer Systems Networking.

Introduction 1 1: Introduction.

CS 5565 Network Architecture and Protocols

Chapter 1: Introduction

Part I: Introduction Chapter goal:

Part I: Introduction Chapter goal:

Chapter 1: Introduction

Part I: Introduction Overview: what’s the Internet what’s a protocol?

The Internet 2nd Lecture

Presentation transcript:

Introduction1-1 Introduction to Computer Networks Our goal:  get “feel” and terminology  more depth, detail later in course  approach:  use Internet as example Overview:  what’s the Internet  what’s a protocol?  network edge  network core  access net, physical media  Internet/ISP structure  performance: loss, delay  protocol layers, service models  network modeling

Introduction1-2 Roadmap 1.1 What is the Internet? 1.2 Network edge 1.3 Network core 1.4 Network access and physical media 1.5 Internet structure and ISPs 1.6 Delay & loss in packet-switched networks 1.7 Protocol layers, service models 1.8 History

Introduction1-3 What’s the Internet: “nuts and bolts” view  millions of connected computing devices: hosts = end systems  running network apps  communication links  fiber, copper, radio, satellite  transmission rate = bandwidth  routers: forward packets (chunks of data) local ISP company network regional ISP router workstation server mobile

Introduction1-4 “Cool” internet appliances World’s smallest web server IP picture frame Web-enabled toaster + weather forecaster Internet phones

Introduction1-5 What’s the Internet: “nuts and bolts” view  protocols control sending, receiving of msgs  e.g., TCP, IP, HTTP, FTP, PPP  Internet: “network of networks”  loosely hierarchical  public Internet versus private intranet  Internet standards  RFC: Request for comments  IETF: Internet Engineering Task Force local ISP company network regional ISP router workstation server mobile

Introduction1-6 What’s the Internet: a service view  communication infrastructure enables distributed applications:  Web, , games, e- commerce, file sharing  communication services provided to apps:  Connectionless unreliable  connection-oriented reliable

Introduction1-7 What’s a protocol? human protocols:  “what’s the time?”  “I have a question”  introductions … specific msgs sent … specific actions taken when msgs received, or other events network protocols:  machines rather than humans  all communication activity in Internet governed by protocols protocols define format, order of msgs sent and received among network entities, and actions taken on msg transmission, receipt

Introduction1-8 What’s a protocol? a human protocol and a computer network protocol: Q: Other human protocols? Hi Got the time? 2:00 TCP connection request TCP connection response Get time

Introduction1-9 Roadmap 1.1 What is the Internet? 1.2 Network edge 1.3 Network core 1.4 Network access and physical media 1.5 Internet structure and ISPs 1.6 Delay & loss in packet-switched networks 1.7 Protocol layers, service models 1.8 History

Introduction1-10 A closer look at network structure:  network edge: applications and hosts  network core:  routers  network of networks  access networks, physical media: communication links

Introduction1-11 The network edge:  end systems (hosts):  run application programs  e.g. Web,  at “edge of network”  client/server model  client host requests, receives service from always-on server  e.g. Web browser/server; client/server  peer-peer model:  minimal (or no) use of dedicated servers  e.g. Skype, BitTorrent, KaZaA

Introduction1-12 Network edge: connection-oriented service Goal: data transfer between end systems  handshaking: setup (prepare for) data transfer ahead of time  Hello, hello back human protocol  set up “state” in two communicating hosts  TCP - Transmission Control Protocol  Internet’s connection- oriented service TCP service [RFC 793]  reliable, in-order byte- stream data transfer  loss: acknowledgements and retransmissions  flow control:  sender won’t overwhelm receiver  congestion control:  senders “slow down sending rate” when network congested

Introduction1-13 Network edge: connectionless service Goal: data transfer between end systems  same as before!  UDP - User Datagram Protocol [RFC 768]:  connectionless  unreliable data transfer  no flow control  no congestion control App’s using TCP:  HTTP (Web), FTP (file transfer), Telnet (remote login), SMTP ( ) App’s using UDP:  streaming media, teleconferencing, DNS, Internet telephony