Chapter 7: Computer Networks, the Internet, and the World Wide Web. Invitation to Computer Science, C++ Version, Third Edition
|
|
|
- Cathleen Walton
- 8 years ago
- Views:
Transcription
1 Chapter 7: Computer Networks, the Internet, and the World Wide Web Invitation to Computer Science, C++ Version, Third Edition
2 Objectives In this chapter, you will learn about: Basic networking concepts Communication protocols Network services and benefits A brief history of the Internet and the World Wide Web Invitation to Computer Science, C++ Version, Third Edition 2
3 Introduction Computer network Computers connected together Purpose: exchanging resources and information Just about any kind of information can be sent Examples: television and radio signals, voice, graphics, handwriting, photographs, movies Invitation to Computer Science, C++ Version, Third Edition 3
4 Basic Networking Concepts Computer network Set of independent computer systems connected by telecommunication links Purpose: sharing information and resources Nodes, hosts, or end systems Individual computers on a network Invitation to Computer Science, C++ Version, Third Edition 4
5 Communication Links Switched, dial-up telephone line A circuit is temporarily established between the caller and callee Analog medium Requires modem at both ends to transmit information produced by a computer Computer produces digital information Invitation to Computer Science, C++ Version, Third Edition 5
6 Figure 7.1 Two Forms of Information Representation Invitation to Computer Science, C++ Version, Third Edition 6
7 Figure 7.2 Modulation of a Carrier to Encode Binary Information Invitation to Computer Science, C++ Version, Third Edition 7
8 Communication Links (continued) Dial-up phone links Transmission rate: 56,000 bps (56 Kbps) Broadband Transmission rate: exceeding 128,000 bps (128 Kbps) Invitation to Computer Science, C++ Version, Third Edition 8
9 Communication Links (continued) Options for broadband communications Home use Digital subscriber line (DSL) Cable modem Commercial and office environment Ethernet Fast Ethernet Gigabit Ethernet Invitation to Computer Science, C++ Version, Third Edition 9
10 Figure 7.3 Transmission Time of an Image at Different Transmission Speeds Invitation to Computer Science, C++ Version, Third Edition 10
11 Communication Links (continued) Wireless data communication Uses radio, microwave, and infrared signals Enables mobile computing Types of wireless data communication Wireless local access network Wireless wide-area access network Invitation to Computer Science, C++ Version, Third Edition 11
12 Local Area Networks Local area network (LAN) Connects hardware devices that are in close proximity The owner of the devices is also the owner of the means of communications Common wired LAN topologies Bus Ring Star Invitation to Computer Science, C++ Version, Third Edition 12
13 Figure 7.4 Some Common LAN Topologies Invitation to Computer Science, C++ Version, Third Edition 13
14 Local Area Networks (continued) Ethernet Most widely used LAN technology Uses the bus topology Two ways to construct an Ethernet LAN Shared cable Hubs: the most widely used technology Invitation to Computer Science, C++ Version, Third Edition 14
15 Figure 7.5: An Ethernet LAN Implemented Using Shared Cables Invitation to Computer Science, C++ Version, Third Edition 15
16 Figure 7.6 An Ethernet LAN Implemented Using a Hub Invitation to Computer Science, C++ Version, Third Edition 16
17 Wide Area Networks Wide area networks (WANs) Connect devices that are across town, across the country, or across the ocean Users must purchase telecommunications services from an external provider Dedicated point-to-point lines Most use a store-and-forward, packet-switched technology to deliver messages Invitation to Computer Science, C++ Version, Third Edition 17
18 Figure 7.7 Typical Structure of a Wide Area Network Invitation to Computer Science, C++ Version, Third Edition 18
19 Overall Structure of the Internet All real-world networks, including the Internet, are a mix of LANs and WANs Example: a company or a college One or more LANs connecting its local computers Individual LANs interconnected into a wide-area company network Invitation to Computer Science, C++ Version, Third Edition 19
20 Figure 7.8(a) Structure of a Typical Company Network Invitation to Computer Science, C++ Version, Third Edition 20
21 Overall Structure of the Internet (continued) Internet Service Provider (ISP) A wide-area network Provides a pathway from a specific network to other networks, or from an individual to other networks ISPs are hierarchical Interconnect to each other in multiple layers to provide greater geographical coverage Invitation to Computer Science, C++ Version, Third Edition 21
22 Figure 7.8(b) Structure of a Network Using an ISP Invitation to Computer Science, C++ Version, Third Edition 22
23 Figure 7.8(c) Hierarchy of Internet Service Providers Invitation to Computer Science, C++ Version, Third Edition 23
24 Overall Structure of the Internet (continued) Internet A huge interconnected network of networks Includes nodes, LANs, WANs, bridges, routers, and multiple levels of ISPs Early million nodes (hosts) Hundreds of thousands of separate networks located in over 225 countries Invitation to Computer Science, C++ Version, Third Edition 24
25 Communication Protocols A protocol A mutually agreed upon set of rules, conventions, and agreements for the efficient and orderly exchange of information TCP/IP The Internet protocol hierarchy Governs the operation of the Internet Five layers Invitation to Computer Science, C++ Version, Third Edition 25
26 Figure 7.10 The Five-Layer TCP/IP Internet Protocol Hierarchy Invitation to Computer Science, C++ Version, Third Edition 26
27 Physical Layer Protocols govern the exchange of binary digits across a physical communication channel Goal: create a bit pipe between two computers Invitation to Computer Science, C++ Version, Third Edition 27
28 Data Link Layer Protocols carry out Error handling Framing Creates an error-free message pipe Composed of two services Layer 2a: medium access control Layer 2b: logical link control Invitation to Computer Science, C++ Version, Third Edition 28
29 Data Link Layer (continued) Medium access control protocols Determine how to arbitrate ownership of a shared line when multiple nodes want to send at the same time Logical link control protocols Ensure that a message traveling across a channel from source to destination arrives correctly Invitation to Computer Science, C++ Version, Third Edition 29
30 Network Layer Delivers a message from the site where it was created to its ultimate destination Critical responsibilities Creating a universal addressing scheme for all network nodes Delivering messages between any two nodes in the network Invitation to Computer Science, C++ Version, Third Edition 30
31 Network Layer (continued) Provides a true network delivery service Messages are delivered between any two nodes in the network, regardless of where they are located IP (Internet Protocol) layer Network layer in the Internet Invitation to Computer Science, C++ Version, Third Edition 31
32 Transport Layer Provides a high-quality, error-free, order preserving end-to-end delivery service TCP (Transport Control Protocol) Primary transport protocol on the Internet Requires the source and destination programs to initially establish a connection Invitation to Computer Science, C++ Version, Third Edition 32
33 Figure 7.15 Logical View of a TCP Connection Invitation to Computer Science, C++ Version, Third Edition 33
34 Application Layer Implements the end-user services provided by a network There are many application protocols, including: HTTP SMTP POP3 IMAP FTP Invitation to Computer Science, C++ Version, Third Edition 34
35 Figure 7.16 Some Popular Application Protocols on the Internet Invitation to Computer Science, C++ Version, Third Edition 35
36 Application Layer (continued) Uniform Resource Locator (URL) A symbolic string that identifies a Web page Form protocol://host address/page The most common Web page format is hypertext information Accessed using the HTTP protocol Invitation to Computer Science, C++ Version, Third Edition 36
37 Network Services and Benefits Services offered by computer networks Electronic mail ( ) Bulletin boards News groups Chat rooms Resource sharing Physical resources Logical resources Invitation to Computer Science, C++ Version, Third Edition 37
38 Network Services and Benefits (continued) Services offered by computer networks Client-server computing Information sharing Information utility Electronic commerce (e-commerce) Invitation to Computer Science, C++ Version, Third Edition 38
39 A Brief History of the Internet and the World Wide Web: The Internet August 1962: first proposal for building a computer network Made by J. C. R. Licklider of MIT ARPANET Built by the Advanced Research Projects Agency (ARPA) in the 1960s Grew quickly during the early 1970s Invitation to Computer Science, C++ Version, Third Edition 39
40 The Internet (continued) NSFNet: A national network built by the National Science Foundation (NSF) October 24, 1995: Formal acceptance of the term Internet Internet service providers start offering Internet access once provided by the ARPANET and NSFNet Invitation to Computer Science, C++ Version, Third Edition 40
41 Figure 7.20 State of Networking in the Late 1980s Invitation to Computer Science, C++ Version, Third Edition 41
42 The World Wide Web Development completed in May 1991 Designed and built by Tim Berners-Lee Components Hypertext A collection of documents interconnected by pointers called links URL (Uniform Resource Locator) The worldwide identification of a Web page located on a specific host computer Invitation to Computer Science, C++ Version, Third Edition 42
43 Figure 7.21 Hypertext Documents Invitation to Computer Science, C++ Version, Third Edition 43
44 Summary of Level 3 Virtual environment Created by system software Easy to use and easy to understand Provides services such as: Resource management Security Access control Efficient resource use Operating systems continue to evolve Invitation to Computer Science, C++ Version, Third Edition 44
45 Summary Computer network: a set of independent computer systems connected by telecommunication links Options for transmitting data on a network: dialup telephone lines, DSL, cable modem, Ethernet, Fast Ethernet Types of networks: local area network (LAN) and wide area network (WAN) Invitation to Computer Science, C++ Version, Third Edition 45
46 Summary The Internet is a huge interconnected "network of networks" TCP/IP is the Internet protocol hierarchy, composed of five layers: physical, data link, network, transport, and application The World Wide Web is an information system based on the concept of hypertext Invitation to Computer Science, C++ Version, Third Edition 46
Introduction to computer networks and Cloud Computing
Introduction to computer networks and Cloud Computing Aniel Nieves-González Fall 2015 Computer Netwoks A computer network is a set of independent computer systems that are connected by a communication
Computer Networks. Computer Networks. Telecommunication Links. Connecting. Connecting via Telephone Lines ISDN
Chapter 12 Topics: Communication links LAN / WAN Internet / WWW A computer network is a set of independent computer systems interconnected by telecommunication links. CMPUT101 Introduction to Computing
ADSL or Asymmetric Digital Subscriber Line. Backbone. Bandwidth. Bit. Bits Per Second or bps
ADSL or Asymmetric Digital Subscriber Line Backbone Bandwidth Bit Commonly called DSL. Technology and equipment that allow high-speed communication across standard copper telephone wires. This can include
Computer Networks Vs. Distributed Systems
Computer Networks Vs. Distributed Systems Computer Networks: A computer network is an interconnected collection of autonomous computers able to exchange information. A computer network usually require
3.1 TELECOMMUNICATIONS, NETWORKS AND THE INTERNET
3.1 TELECOMMUNICATIONS, NETWORKS AND THE INTERNET The Business Value of Telecommunications and Networking Business value impacts of the telecommunications and Networking are: Declining transaction costs
Chapter 9. Communications and Networks. McGraw-Hill/Irwin. Copyright 2008 by The McGraw-Hill Companies, Inc. All rights reserved.
Chapter 9 Communications and Networks McGraw-Hill/Irwin Copyright 2008 by The McGraw-Hill Companies, Inc. All rights reserved. Competencies (Page 1 of 2) Discuss connectivity, the wireless revolution,
Chapter 5. Data Communication And Internet Technology
Chapter 5 Data Communication And Internet Technology Purpose Understand the fundamental networking concepts Agenda Network Concepts Communication Protocol TCP/IP-OSI Architecture Network Types LAN WAN
Oct 15, 2004 www.dcs.bbk.ac.uk/~gmagoulas/teaching.html 3. Internet : the vast collection of interconnected networks that all use the TCP/IP protocols
E-Commerce Infrastructure II: the World Wide Web The Internet and the World Wide Web are two separate but related things Oct 15, 2004 www.dcs.bbk.ac.uk/~gmagoulas/teaching.html 1 Outline The Internet and
Telecommunications, Networks, and Wireless Computing
Objectives Telecommunications, Networks, and Wireless Computing 1. What are the features of a contemporary corporate telecommunications system? On what major technology developments are they based? 2.
EE4367 Telecom. Switching & Transmission. Prof. Murat Torlak
Packet Switching and Computer Networks Switching As computer networks became more pervasive, more and more data and also less voice was transmitted over telephone lines. Circuit Switching The telephone
Think! Think! Data communications. Long-Distance. Modems: to analog and back. Transmission Media. The last mile is the hardest for digital information
Data communications Think! Think!?? What makes it possible to communicate from point A to point B?? Long-Distance Transmission Media If you place a call outside the local transport area, an interchange
C20.0001 Information Systems for Managers Fall 1999
New York University, Leonard N. Stern School of Business C20.0001 Information Systems for Managers Fall 1999 Networking Fundamentals A network comprises two or more computers that have been connected in
Discovering Computers 2008. Chapter 9 Communications and Networks
Discovering Computers 2008 Chapter 9 Communications and Networks Chapter 9 Objectives Discuss the the components required for for successful communications Identify various sending and receiving devices
Chapter 9A. Network Definition. The Uses of a Network. Network Basics
Chapter 9A Network Basics 1 Network Definition Set of technologies that connects computers Allows communication and collaboration between users 2 The Uses of a Network Simultaneous access to data Data
Basic Networking Concepts. 1. Introduction 2. Protocols 3. Protocol Layers 4. Network Interconnection/Internet
Basic Networking Concepts 1. Introduction 2. Protocols 3. Protocol Layers 4. Network Interconnection/Internet 1 1. Introduction -A network can be defined as a group of computers and other devices connected
Overview of Computer Networks
Overview of Computer Networks Client-Server Transaction Client process 4. Client processes response 1. Client sends request 3. Server sends response Server process 2. Server processes request Resource
Introduction Chapter 1. Uses of Computer Networks
Introduction Chapter 1 Uses of Computer Networks Network Hardware Network Software Reference Models Example Networks Network Standardization Metric Units Revised: August 2011 Uses of Computer Networks
Local-Area Network -LAN
Computer Networks A group of two or more computer systems linked together. There are many [types] of computer networks: Peer To Peer (workgroups) The computers are connected by a network, however, there
Wireless Links - Wireless communication relies on radio signals or infrared signals for transmitting data.
Uses of a network A network is a way to connect computers so that they can communicate, exchange information and share resources in real time. Networks enable multiple users to access shared data and programs
Networks 2. Gabriela Ochoa. 2014 University of Stirling CSCU9B1 Essential Skills for the Information Age. Content
Networks 2 Gabriela Ochoa Lecture Networks 2/Slide 1 Content How is Internet connected? Internet backbone Internet service providers (ISP) How to connect a home computer to the Internet? How do networks
Chapter 2 - The TCP/IP and OSI Networking Models
Chapter 2 - The TCP/IP and OSI Networking Models TCP/IP : Transmission Control Protocol/Internet Protocol OSI : Open System Interconnection RFC Request for Comments TCP/IP Architecture Layers Application
Future Stars. Grade X Manual Chapter 1 Networking and Telecommunication. telecommunication. Telephones, telegrams, radios and televisions help
Future Stars Grade X Manual Chapter 1 Networking and Telecommunication 1. Answer the following questions. a. What is telecommunication? Ans: The transfer of information at a far distance is known as telecommunication.
Computer Networks III
Computer Networks III Wide Area Networks and Packet Switching Network Protocols and the OSI Layers The Internet Internet Infrastructure 1 Wide Area Networks (recap) 2 Page 1 Basic WAN structure Host Router
Lecture 1. Lecture Overview. Intro to Networking. Intro to Networking. Motivation behind Networking. Computer / Data Networks
Lecture 1 An Introduction to Networking Chapter 1, pages 1-22 Dave Novak BSAD 146, Introduction to Networking School of Business Administration University of Vermont Lecture Overview Brief introduction
MANAGEMENT INFORMATION SYSTEMS 8/E
MANAGEMENT INFORMATION SYSTEMS 8/E Raymond McLeod, Jr. and George Schell Chapter 10 Data Communications Copyright 2001 Prentice-Hall, Inc. 10-1 Objectives Understand data communication basics. Know the
MMGD0204 Web Application Technologies. Chapter 1 Introduction to Internet
MMGD0204 Application Technologies Chapter 1 Introduction to Internet Chapter 1 Introduction to Internet What is The Internet? The Internet is a global connection of computers. These computers are connected
Computer Network. Interconnected collection of autonomous computers that are able to exchange information
Introduction Computer Network. Interconnected collection of autonomous computers that are able to exchange information No master/slave relationship between the computers in the network Data Communications.
CSCI 362 Computer and Network Security
The Purpose of ing CSCI 362 Computer and Security Introduction to ing Goals: Remote exchange and remote process control. A few desirable properties: Interoperability, Flexibility, Geographical range, Scalability,
Overview of TCP/IP. TCP/IP and Internet
Overview of TCP/IP System Administrators and network administrators Why networking - communication Why TCP/IP Provides interoperable communications between all types of hardware and all kinds of operating
8/27/2014. What is a computer network? Introduction. Business Applications (1) Uses of Computer Networks. Business Applications (2)
What is a computer network? Introduction Chapter 1 A number of separate but interconnected computers A collection of autonomous computers interconnected by a single technology COURSE FOCUS: design and
CHAPTER 9: THE EVOLVING INTERNET
CHAPTER 9: THE EVOLVING INTERNET Multiple Choice: 1. What was the department of the U.S. government that developed the initial stages of the Internet? A. Department of Commerce B. Department of Defense
Communication Networks. MAP-TELE 2011/12 José Ruela
Communication Networks MAP-TELE 2011/12 José Ruela Network basic mechanisms Introduction to Communications Networks Communications networks Communications networks are used to transport information (data)
1 Which network type is a specifically designed configuration of computers and other devices located within a confined area? A Peer-to-peer network
Review questions 1 Which network type is a specifically designed configuration of computers and other devices located within a confined area? A Peer-to-peer network B Local area network C Client/server
Telecommunications, the Internet, and Wireless Technology
Chapter 6 Telecommunications, the Internet, and Wireless Technology 6.1 Copyright 2011 Pearson Education, Inc. STUDENT LEARNING OBJECTIVES What are the principal components of telecommunications networks
R2. The word protocol is often used to describe diplomatic relations. How does Wikipedia describe diplomatic protocol?
Chapter 1 Review Questions R1. What is the difference between a host and an end system? List several different types of end systems. Is a Web server an end system? 1. There is no difference. Throughout
CITS1231 Web Technologies. Client, Server, the Internet, and the Web
CITS1231 Web Technologies Client, Server, the Internet, and the Web Topic Outline How does the Internet work Client Server Architecture Connections Communications Protocols Addressing Routing One of the
IT-5302-3 Internet Architecture and Protocols. Lecture 02 Overview of Internet Architecture
IT-5302-3 Internet Architecture and Protocols Punjab University College of Information Technology, University of the Punjab, Pakistan. Lecture 02 Overview of Internet Architecture Lecture 02 - Roadmap
The OSI and TCP/IP Models. Lesson 2
The OSI and TCP/IP Models Lesson 2 Objectives Exam Objective Matrix Technology Skill Covered Exam Objective Exam Objective Number Introduction to the OSI Model Compare the layers of the OSI and TCP/IP
Using MIS 3e Chapter 6A Appendix
Study Questions Using MIS 3e Chapter 6A Appendix How the Internet Works David Kroenke Q1: How does email travel? Q2: What is a communications protocol? Q3: What are the functions of the five TCP/IP-OSI
Terminology. Internet Addressing System
Terminology A local area network (LAN) is a computer network covering a small physical area, like a home, office, or small group of buildings, such as a school, or an airport. The defining characteristics
WAN Technology. Heng Sovannarith heng_sovannarith@yahoo.com
WAN Technology Heng Sovannarith heng_sovannarith@yahoo.com Introduction A WAN is a data communications network that covers a relatively broad geographic area and often uses transmission facilities provided
CHAPTER 8: NETWORKING AND DIGITAL COMMUNICATION
CHAPTER 8: NETWORKING AND DIGITAL COMMUNICATION Multiple Choice: 1. A basic computer network can be described as: A. a minimum of five computers linked together. B. a number of palmtop computers. C. two
Local Area Networks (LANs) Blueprint (May 2012 Release)
Local Area Networks (LANs) The CCNT Local Area Networks (LANs) Course April 2012 release blueprint lists the following information. Courseware Availability Date identifies the availability date for the
CSCI 491-01 Topics: Internet Programming Fall 2008
CSCI 491-01 Topics: Internet Programming Fall 2008 Introduction Derek Leonard Hendrix College September 3, 2008 Original slides copyright 1996-2007 J.F Kurose and K.W. Ross 1 Chapter 1: Introduction Our
WAN Data Link Protocols
WAN Data Link Protocols In addition to Physical layer devices, WANs require Data Link layer protocols to establish the link across the communication line from the sending to the receiving device. 1 Data
What You Will Learn About. Computers Are Your Future. Chapter 8. Networks: Communicating and Sharing Resources. Network Fundamentals
What You Will Learn About Computers Are Your Future Chapter 8 Networks: Communicating and Sharing Resources Basic networking concepts Advantages and disadvantages of networks Peer-to-peer and client/server
Network Technologies
Network Technologies Telephone Networks IP Networks ATM Networks Three Network Technologies Telephone Network The largest worldwide computer network, specialized for voice ing technique: Circuit-switching
Connection Services. Hakim S. ADICHE, MSc
Connection Services Hakim S. ADICHE, MSc adiche@ccse.kfupm.edu.sa Department of Computer Engineering King Fahd University of Petroleum and Minerals Dhahran, Saudi Arabia Connection Services Different connectivity
Introduction to Computer
PDHonline Course E175 (8 PDH) Introduction to Computer Instructor: Dale W. Callahan, Ph.D., P.E. and Lea B. Callahan, P.E. 2012 PDH Online PDH Center 5272 Meadow Estates Drive Fairfax, VA 22030-6658 Phone
Topics. Computer Networks. Let s Get Started! Computer Networks: Our Definition. How are Networks Used by Computers? Computer Network Components
Topics Use of networks Network structure Implementation of networks Computer Networks Introduction Let s Get Started! Networking today: Where are they? Powerful computers are cheap Networks are everywhere
Public Network. 1. Relatively long physical distance 2. Requiring a service provider (carrier) Branch Office. Home. Private Network.
Introduction to LAN TDC 363 Week 4 Connecting LAN to WAN Book: Chapter 7 1 Outline Wide Area Network (WAN): definition WAN Topologies Choices of WAN technologies Dial-up ISDN T1 Frame Relay DSL Remote
Computer Networking Networks
Page 1 of 8 Computer Networking Networks 9.1 Local area network A local area network (LAN) is a network that connects computers and devices in a limited geographical area such as a home, school, office
WAN Technologies Based on CCNA 4 v3.1 Slides Compiled & modified by C. Pham
WAN Technologies Based on CCNA 4 v3.1 Slides Compiled & modified by C. Pham 1 Wide-area Networks (WANs) 2 Metropolitan-Area Network (MANs) 3 Path Determination 4 Internetworking Any internetwork must include
IT4504 - Data Communication and Networks (Optional)
- Data Communication and Networks (Optional) INTRODUCTION This is one of the optional courses designed for Semester 4 of the Bachelor of Information Technology Degree program. This course on Data Communication
ELEC3030 Computer Networks
ELEC3030 Computer Networks Professor Sheng Chen: Building 86, Room 1021 E-mail: sqc@ecs.soton.ac.uk Download lecture slides from: http://www.ecs.soton.ac.uk/ sqc/el336/ or get them from Course Office (ECS
Local Area Network By Bhupendra Ratha, Lecturer School of Library and Information Science Devi Ahilya University, Indore Email: bhu261@gmail.com Local Area Network LANs connect computers and peripheral
Introduction cont. Some Structure in the Chaos. Packet switching versus circuit switching. Access networks and physical media
Introduction cont. Some Structure in the Chaos Lecture goal: get context, overview, feel of ing more depth, detail later in course approach: o descriptive o use Internet as example Overview: access net,
Overview of WAN Connections Module 1
Overview of WAN Connections Module 1 Objectives This module introduces the basic elements of WAN connections and describes the role each element plays in creating that connection. After completing this
5 Data Communication and Networking
5 Data Communication and Networking 5.1 Introduction Today computer is available in many offices and homes and therefore there is a need to share data and programs among various computers. With the advancement
Internet Public Network
Internet Public Network Bandwidth Data rate measured in bits (not bytes) per seconds Kbps (Kilobits per seconds) 125 chars/sec Mbps (Megabits per seconds) 1,250 chars/sec Gbps (Gigabits per seconds) 12,500
IT4405 Computer Networks (Compulsory)
IT4405 Computer Networks (Compulsory) INTRODUCTION This course provides a comprehensive insight into the fundamental concepts in data communications, computer network systems and protocols both fixed and
architecture: what the pieces are and how they fit together names and addresses: what's your name and number?
Communications and networking history and background telephone system local area networks Internet architecture: what the pieces are and how they fit together names and addresses: what's your name and
Connecting with Computer Science, 2e. Chapter 5 The Internet
Connecting with Computer Science, 2e Chapter 5 The Internet Objectives In this chapter you will: Learn what the Internet really is Become familiar with the architecture of the Internet Become familiar
NETWORKING TECHNOLOGIES
NETWORKING TECHNOLOGIES (October 19, 2015) BUS3500 - Abdou Illia, Fall 2015 1 LEARNING GOALS Identify the major hardware components in networks. Identify and explain the various types of computer networks.
CHAPTER - 10 COMPUTER NETWORKING
CHAPTER - 10 INTRODUCTION COMPUTER NETWORKING When two or more objects are connected they form a network. For example in our Vidyalaya all teachers form a network of teachers, all students form a network
Network: several computers who can communicate. bus. Main example: Ethernet (1980 today: coaxial cable, twisted pair, 10Mb 1000Gb).
1 / 17 Network: several computers who can communicate. Bus topology: bus Main example: Ethernet (1980 today: coaxial cable, twisted pair, 10Mb 1000Gb). Hardware has globally unique MAC addresses (IDs).
Chapter 9 Communications and Networks
Chapter 9 Communications and Networks Chapter 9 Objectives Discuss the components required for successful communications Identify various sending and receiving devices Explain the purpose of communications
Overview of Network Hardware and Software. CS158a Chris Pollett Jan 29, 2007.
Overview of Network Hardware and Software CS158a Chris Pollett Jan 29, 2007. Outline Scales of Networks Protocol Hierarchies Scales of Networks Last day, we talked about broadcast versus point-to-point
CCNA 1: Networking Basics. Cisco Networking Academy Program Version 3.0
CCNA 1: Networking Basics Cisco Networking Academy Program Version 3.0 Table of Contents CCNA 1: NETWORKING BASICS...1 TARGET AUDIENCE...3 PREREQUISITES...3 COURSE DESCRIPTION...3 COURSE OBJECTIVES...3
Computer networks, data communication and Internet
**** 1 Computer networks, data communication and Internet Introduction **** Computer networks: summary 2 The following gives an overview of computer networks and data communication:»the basic principles»local
Network+ Guide to Networks 6 th Edition. Chapter 7 Wide Area Networks
Network+ Guide to Networks 6 th Edition Chapter 7 Wide Area Networks Objectives Identify a variety of uses for WANs Explain different WAN topologies, including their advantages and disadvantages Compare
Chapter 9. The Internet: Information Technology Infrastructure for the Digital Firm. Essentials of Management Information Systems
Chapter 9 The Internet: Information Technology Infrastructure for the Digital Firm 9.1 Prentice Hall Objectives 1. How does the Internet work? What are its major capabilities and benefits to business?
CISC 1600 Introduction to Multi-media Computing
CISC 1600 Introduction to Multi-media Computing Spring 2012 Instructor : J. Raphael Email Address: Course Page: Class Hours: raphael@sci.brooklyn.cuny.edu http://www.sci.brooklyn.cuny.edu/~raphael/cisc1600.html
CSE 3461 / 5461: Computer Networking & Internet Technologies
Autumn Semester 2014 CSE 3461 / 5461: Computer Networking & Internet Technologies Instructor: Prof. Kannan Srinivasan 08/28/2014 Announcement Drop before Friday evening! k. srinivasan Presentation A 2
COMPSCI 111 / 111G An introduc)on to prac)cal compu)ng
COMPSCI 111 / 111G An introduc)on to prac)cal compu)ng Introduc)on to Networking and the Internet 3/8/15 1 From the Telephone to the Internet 1876: First successful bi- direc;onal transmission of clear
Page 1 of 7. Computer Networking
Page 1 of 7 Computer Networking 7.1 What Is Computer Networking? A computer network consists of several computers that are connected to one another using devices that allow them to communicate. Computer
Introduction to Computer Networks and Data Communications
Introduction to Computer Networks and Data Communications Chapter 1 Learning Objectives After reading this chapter, you should be able to: Define the basic terminology of computer networks Recognize the
Computer Networks and Internet working
Computer Networks and Internet working By completing this module you will be able to understand and learn the following: Computer Networking, Types of Networks and network Services Different Cables used
COMPUTERS ARE YOUR FUTURE CHAPTER 7 NETWORKS: COMMUNICATING AND SHARING RESOURCES
COMPUTERS ARE YOUR FUTURE CHAPTER 7 NETWORKS: COMMUNICATING AND SHARING RESOURCES Answers to End-of-Chapter Questions Matching g 1. router o 2. node i 3. ring l 4. hub c 5. star n 6. backbone b 7. latency
This course has been retired. View the schedule of current <a href=http://www.ptr.co.uk/networkingcourses.htm>networking
Introduction to Data Communications & Networking Course Description: This course has been retired. View the schedule of current networking Courses
Communications and Computer Networks
SFWR 4C03: Computer Networks and Computer Security January 5-8 2004 Lecturer: Kartik Krishnan Lectures 1-3 Communications and Computer Networks The fundamental purpose of a communication system is the
Understand VLANs, Wired LANs, and Wireless LANs
LESSON 1,2_B Understand VLANs, Wired LANs, and Wireless LANs Lesson Overview In this lesson, you will review: Wired local area networks Wireless local area networks Virtual local area networks (VLANs)
CMPT 165: The Internet, Part 3
CMPT 165: The Internet, Part 3 Tamara Smyth, tamaras@cs.sfu.ca School of Computing Science, Simon Fraser University September 15, 2011 1 Basic Communication Technology Packet Switching (sharing a tranmission
Lecture 28: Internet Protocols
Lecture 28: Internet Protocols 15-110 Principles of Computing, Spring 2016 Dilsun Kaynar, Margaret Reid-Miller, Stephanie Balzer Reminder: Exam 2 Exam 2 will take place next Monday, on April 4. Further
Lecture 6 Types of Computer Networks and their Topologies Three important groups of computer networks: LAN, MAN, WAN
Lecture 6 Types of Computer Networks and their Topologies Three important groups of computer networks: LAN, MAN, WAN LAN (Local Area Networks) 10/28/2008 Vasile Dadarlat - Computer Networks 1 MAN (Metropolitan
CA106 Web Design. Dr. Dónal Fitzpatrick, School of Computing Room l2.48, Extension 8929, dfitzpat@computing.dcu.ie
CA106 Web Design Dr. Dónal Fitzpatrick, School of Computing Room l2.48, Extension 8929, dfitzpat@computing.dcu.ie History of the Internet Terminals attached to mainframe computer From mid 1960 s packet-switching
CMSI 182 Intro to Computer Science. Week 13 Tuesday B.J. Johnson Doolan 222 09:25 10:40
CMSI 182 Intro to Computer Science Week 13 Tuesday B.J. Johnson Doolan 222 09:25 10:40 Where We Are: History Lesson We re here! I/O Peripherals Internet Architecture RAM/ROM Applications O/S Programs Languages
Lesson 24 Network Fundamentals
Network Fundamentals Computer Literacy BASICS: A Comprehensive Guide to IC 3, 3 rd Edition 1 Objectives Describe a network. Explain the benefits of a network. Identify the risks of network computing. Describe
Protocols. Packets. What's in an IP packet
Protocols Precise rules that govern communication between two parties TCP/IP: the basic Internet protocols IP: Internet Protocol (bottom level) all packets shipped from network to network as IP packets
Internet and Services
3 Internet and Services 3.1 INTRODUCTION The Internet began way back in 1969 when it was called ARPANet (Advanced Research Project Agency Network) and was used exclusively for military purposes. It soon
Computer Networks. Definition of LAN. Connection of Network. Key Points of LAN. Lecture 06 Connecting Networks
Computer Networks Lecture 06 Connecting Networks Kuang-hua Chen Department of Library and Information Science National Taiwan University Local Area Networks (LAN) 5 kilometer IEEE 802.3 Ethernet IEEE 802.4
Data Communication Networks Introduction
Data Communication Networks Introduction M. R. Pakravan Department of Electrical Engineering Sharif University of Technology Data Networks 1 Introduction The course introduces the underlying concepts and
Management Information Systems
Management Information Systems Basics of the Internet Dr. Shankar Sundaresan (Adapted from Introduction to IS, Rainer and Turban) Internet Basics Outline Internet History Internet Structure Switching Methods
Alexander Nikov. 6. Telecommunications and networks, the Internet. Hyundai Heavy Industries Creates A Wireless Shipyard. a Wireless Shipyard
INFO 1500 Introduction to IT Fundamentals Learning Objectives 6. Telecommunications and networks, the Internet 1. Identify the principal components of telecommunications networks and key networking technologies.
Computer Networks CS321
Computer Networks CS321 Dr. Ramana I.I.T Jodhpur Dr. Ramana ( I.I.T Jodhpur ) Computer Networks CS321 1 / 22 Outline of the Lectures 1 Introduction OSI Reference Model Internet Protocol Performance Metrics
Chapter 4: Networking and the Internet
Chapter 4: Networking and the Internet Computer Science: An Overview Eleventh Edition by J. Glenn Brookshear Copyright 2012 Pearson Education, Inc. Chapter 4: Networking and the Internet 4.1 Network Fundamentals
Computer Networks. By Hardeep Singh
Computer Networks Contents Introduction Basic Elements of communication systemnetwork Topologies Network types Introduction A Computer network is a network of computers that are geographically distributed,
Glossary of Terms and Acronyms for Videoconferencing
Glossary of Terms and Acronyms for Videoconferencing Compiled by Irene L. Ferro, CSA III Education Technology Services Conferencing Services Algorithm an algorithm is a specified, usually mathematical
Protocol Data Units and Encapsulation
Chapter 2: Communicating over the 51 Protocol Units and Encapsulation For application data to travel uncorrupted from one host to another, header (or control data), which contains control and addressing
Chapter 1: Introduction to Communications What is Data Communications? Data Communication Networks Basic Components of a communications system
Dear Student Here is the list of chapter sections that we will be covering for this semester. For each chapter listed in pages below: Any Bold text is required (with all the details in that sections) Any