Acknowledgment and Disclaimer:
|
|
|
- Amelia Lucas
- 6 years ago
- Views:
Transcription
1 What is the Internet Acknowledgment and Disclaimer: This presentation is supported in part by the National Science Foundation under Grant Any opinions, findings, and conclusions or recommendations expressed in these materials are those of the authors and do not necessarily reflect the views of the National Science Foundation.
2 The Internet, a Big Idea The Internet is one of the 7 big ideas of the CS Principles Curriculum.
3 The Internet, a Big Idea The Internet is one of the 7 big ideas of the CS Principles Curriculum. Key Questions: o What is the Internet, how is it built, and how does it work?
4 The Internet, a Big Idea The Internet is one of the 7 big ideas of the CS Principles Curriculum. Key Questions: o What is the Internet, how is it built, and how does it work? o What aspects of the Internet s design and development have enabled it to grow so large and be so influential?
5 The Internet, a Big Idea The Internet is one of the 7 big ideas of the CS Principles Curriculum. Key Questions: o What is the Internet, how is it built, and how does it work? o What aspects of the Internet s design and development have enabled it to grow so large and be so influential? o How does cybersecurity affect what we do on the Internet?
6 Computer Networks An computer network is a group of two or more computers that are linked together.
7 Computer Networks An computer network is a group of two or more computers that are linked together. Each type of network will have its protocols (rules) that determine how the computers communicate. Token Ring Protocol
8 Computer Networks An computer network is a group of two or more computers that are linked together. Each type of network will have its protocols (rules) that determine how the computers communicate. Token Ring Protocol Ethernet Protocol
9 Computer Networks An computer network is a group of two or more computers that are linked together. Each type of network will have its protocols (rules) that determine how the computers communicate. Token Ring Protocol Wifi Protocol Ethernet Protocol
10 Local Area Network (LAN) A local area network (LAN) connects computers within a school or home.
11 Local Area Network (LAN) A local area network (LAN) connects computers within a school or home. Example: An ethernet network uses wires ( ) to connect computers.
12 Wifi: A Wireless LAN Example: AWifi network uses radio waves ( ) to connect devices (computers, smart phones, printers).
13 Wide Area Network (WAN) Example: A wide area network (WAN) connects devices over a broad geographic region. An example might be a telephone network.
14 Communication Protocol A protocol is a system of rules that govern the behavior of some system.
15 Communication Protocol A protocol is a system of rules that govern the behavior of some system. Diplomatic protocol or etiquette governs how diplomats should behave.
16 Communication Protocol A protocol is a system of rules that govern the behavior of some system. All devices connected on a network use the same communications protocol. Digital protocol determines how digital devices should behave.
17 Communication Protocol A protocol is a system of rules that govern the behavior of some system. All devices connected on a network use the same communications protocol. Diplomatic protocol or etiquette governs how diplomats should behave. Digital protocol determines how digital devices should behave.
18 An Internetwork An internetwork or internet (small i ) is a collection of disparate networks that are connected together via gateways or routers (R).
19 An Internetwork An internetwork or internet (small i ) is a collection of disparate networks that are connected together via gateways or routers (R). R R R R
20 An Internetwork An internetwork or internet (small i ) is a collection of disparate networks that are connected together via gateways or routers (R). A router (R) is a device that transmits data between two different networks. R R R R
21 Internetwork Analogy Think of an internet as the collection of different language communities around the globe, with the translators from one language to another being analogous to internet routers. 你好世界 R Hello world R R R ciao mondo привет мир
22 Routers Transmits data between different networks.
23 Routers Transmits data between different networks. A home router connects local devices to a cable modem.
24 Routers Transmits data between different networks. A home router connects local devices to a cable modem. A cable modem or DSL modem connects your home to your Internet Service Provider (ISP).
25 Routers Transmits data between different networks. A home router connects local devices to a cable modem. A cable modem or DSL modem connects your home to your Internet Service Provider (ISP). An enterprise-level router connects the ISP to the core Internet backbone routers.
26 What is the Internet
27 The Internet (capital I ) is the global public network of independent and autonomous networks that are governed by the Internet Protocol Suite. What is the Internet
28 What is the Internet The Internet (capital I ) is the global public network of independent and autonomous networks that are governed by the Internet Protocol Suite. A partial map of the Internet based on 2005 data produced by the Opte project. Each line is drawn between nodes or addresses on the Internet. The colors represent different top-level domains, such as com, edu and org. Click the map to zoom in.
29 Wikipedia Definition The Internet is a global system of interconnected computer networks that use the standard Internet protocol suite (TCP/IP) to link several billion devices worldwide.
30 Wikipedia Definition The Internet is a global system of interconnected computer networks that use the standard Internet protocol suite (TCP/IP) to link several billion devices worldwide. It is a network of networks that consists of millions of private, public, academic, business, and government networks, of local to global scope, that are linked by a broad array of electronic, wireless, and optical networking technologies.
31 Wikipedia Definition The Internet is a global system of interconnected computer networks that use the standard Internet protocol suite (TCP/IP) to link several billion devices worldwide. It is a network of networks that consists of millions of private, public, academic, business, and government networks, of local to global scope, that are linked by a broad array of electronic, wireless, and optical networking technologies. The Internet carries an extensive range of information resources and services, such as the inter-linked hypertext documents and applications of the World Wide Web (WWW), the infrastructure to support , and peer-to-peer networks for file sharing and telephony.
32 Growth of the Internet A host is a computer connected to the Internet. The Internet has grown exponentially since its inception in 1984 (this graph shows since 1994).
33 Internet Enables Collaboration
34 Internet Connectivity Today, basically, the entire world is connected. Internet users in 2012 as % of country s population.
35 The Internet and the WWW
36 A Common Misconception The World Wide Web (WWW) is NOT the same as the Internet. Internet!= WWW
37 A Common Misconception The World Wide Web (WWW) is NOT the same as the Internet. Internet!= WWW The WWW is an application that runs on the Internet.
38 A Common Misconception The World Wide Web (WWW) is NOT the same as the Internet. Internet!= WWW The WWW is an application that runs on the Internet. The WWW is a collection of documents, images, and resources that are stored on the Internet.
39 A Common Misconception The World Wide Web (WWW) is NOT the same as the Internet. Internet!= WWW The WWW is an application that runs on the Internet. The WWW is a collection of documents, images, and resources that are stored on the Internet. The WWW is NOT a network.
40 WWW is an Application Service The WWW is an application service that runs on the Internet.
41 WWW is an Application Service The WWW is an application service that runs on the Internet. Other application services include: o Simple Mail Transfer Protocol (SMTP) or Post Office Protocol (POP) o File transfer: File Transfer Protocol (FTP) o Instant Messaging: Internet Relay Chat (IRC) o Telephony: Voice Over IP (VoIP)
42 WWW is an Application Service The WWW is an application service that runs on the Internet. Other application services include: o o o o Simple Mail Transfer Protocol (SMTP) or Post Office Protocol (POP) File transfer: File Transfer Protocol (FTP) Instant Messaging: Internet Relay Chat (IRC) Telephony: Voice Over IP (VoIP) These are distributed applications because they run on a network, not on a single computer.
43 Sir Tim Berners-Lee The WWW was invented by Tim Berners-Lee.
44 Sir Tim Berners-Lee The WWW was invented by Tim Berners-Lee. Who, instead of patenting his invention, made his idea freely available without royalties.
45 Sir Tim Berners-Lee The WWW was invented by Tim Berners-Lee. Who, instead of patenting his invention, made his idea freely available without royalties. In his view, the WWW brought the Internet to a higher level of abstraction.
46 Sir Tim Berners-Lee The WWW was invented by Tim Berners-Lee. Who, instead of patenting his invention, made his idea freely available without royalties. In his view, the WWW brought the Internet to a higher level of abstraction. "I just had to take the hypertext idea and connect it to the Transmission Control Protocol and domain name system ideas and ta-da! the World Wide Web... Creating the web was really an act of desperation, because the situation without it was very difficult when I was working at CERN later. Most of the technology involved in the web, like the hypertext, like the Internet, multifont text objects, had all been designed already. I just had to put them together. It was a step of generalising, going to a higher level of abstraction, thinking about all the documentation systems out there as being possibly part of a larger imaginary documentation system."
47 The HTTP Protocol WWW resources are accessed using the HyperText Transfer Protocol (HTTP).
48 The HTTP Protocol WWW resources are accessed using the HyperText Transfer Protocol (HTTP). Resources are accessed by their Uniform Resource Identifiers (URIs) o
49 The HTTP Protocol WWW resources are accessed using the HyperText Transfer Protocol (HTTP). Resources are accessed by their Uniform Resource Identifiers (URIs) o Resources are accessed by browsers o Firefox, Chrome, Safari, IE,
50 Open Standards HTTP is one of many examples of the open standards that characterize the Internet. Why open? The Internet is fundamentally based on the existence of open, non-proprietary standards. They are key to allowing devices, services, and applications to work together across a wide and dispersed network of networks. -- Internet Society
51 Open Standards Standards: HTTP, SMTP, IP, etc. Standard - Draft Standard - Final Public Comment Revisions
52 The HTTP Protocol WWW resources are accessed using the HyperText Transfer Protocol (HTTP). Resources are accessed by their Uniform Resource Identifiers (URIs) o Resources are accessed by browsers o Firefox, Chrome, Safari, IE, Web resources are hosted by Web servers which respond to HTTP requests.
53 The Client/Server Model Client computers request services from a server located on the internet.
54 The Client/Server Model Client computers request services from a server located on the internet.
55 The Client/Server Model Client computers request services from a server located on the internet. EG: Gmail stores messages on Google s servers and processes requests to send/retrieve messages.
56 The HTTP Client/Server Model User clicks: Client Browser requests an HTML document 1
57 The HTTP Client/Server Model User clicks: Request: 2 Client Browser requests an HTML document
58 The HTTP Client/Server Model User clicks: Client Browser requests an HTML document Request: 3 Listen at Port 80 for HTTP requests Web Server fetches and returns the requested document
59 The HTTP Client/Server Model User clicks: Client Browser requests an HTML document Request: Listen at Port 80 for HTTP requests page.html smiley.png Server s Disk Drive 4 Web Server fetches and returns the requested document
60 The HTTP Client/Server Model User clicks: Client Browser requests an HTML document Request: page.html:the requested HTML document <html> <head> <title>my Page</title> </head.> <body> <h1>hi! This is my home page.</h1> <img src= smiley.png > </body> </html> Listen at Port 80 for HTTP requests page.html smiley.png Server s Disk Drive 5 Web Server fetches and returns the requested document
61 The HTTP Client/Server Model User clicks: Client Browser requests an HTML document Request: page.html:the requested HTML document <html> <head> <title>my Page</title> </head.> <body> <h1>hi! This is my home page.</h1> <img src= smiley.png > </body> </html> Listen at Port 80 for HTTP requests page.html smiley.png Server s Disk Drive 6 Web Server fetches and returns the requested document
62 The HTTP Client/Server Model User clicks: Client Browser requests an HTML document Request: page.html:the requested HTML document <html> <head> <title>my Page</title> </head.> <body> <h1>hi! This is my home page.</h1> <img src= smiley.png > </body> </html> Listen at Port 80 for HTTP requests page.html smiley.png Server s Disk Drive Hi! This is my home page Web Server fetches and returns the requested document Browser renders HTML 7
63 Internet Performance
64 Bandwidth Bandwidth or throughput is the rate at which data are downloaded or uploaded in a network.
65 Bandwidth Bandwidth or throughput is the rate at which data are downloaded or uploaded in a network. o Measured in bits per second (bps)
66 Bandwidth Bandwidth or throughput is the rate at which data are downloaded or uploaded in a network. o Measured in bits per second (bps) o Or Kilobits per second (Kbps) -- thousands
67 Bandwidth Bandwidth or throughput is the rate at which data are downloaded or uploaded in a network. o Measured in bits per second (bps) o Or Kilobits per second (Kbps) -- thousands o Or Megabits per second (Mbps) -- millions
68 Bandwidth Bandwidth or throughput is the rate at which data are downloaded or uploaded in a network. o Measured in bits per second (bps) o Or Kilobits per second (Kbps) -- thousands o Or Megabits per second (Mbps) -- millions Click on the meter to test your bandwidth.
69 Global Bandwidth Bandwidth speeds vary across the globe. The current global average is 18.4 Mbps download.
70 Global Bandwidth Bandwidth speeds vary across the globe. The current global average is 18.4 Mbps download. Korea leads the world with 52.6 Mbps. In the US the average is 24.4 Mbps. Click this interactive map to explore by country and within the U.S.
71 Broadband Access Broadband refers to high speed Internet service that is always on, typically through cable or DSL modems (Src: OECD).
72 Broadband Access Broadband refers to high speed Internet service that is always on, typically through cable or DSL modems (Src: OECD). 72.4% Penetration in OECD Countries.
73 Broadband Access Broadband refers to high speed Internet service that is always on, typically through cable or DSL modems (Src: OECD). 72.4% Penetration in OECD Countries. 6 Countries, including the U.S. have over 100% penetration.
74 Latency Latency is a measure of the time it takes a piece of data to reach its destination.
75 Latency Latency is a measure of the time it takes a piece of data to reach its destination. It is typically measured in milliseconds (ms), thousandths of a second.
76 Activity: Ping Measuring Latency
77 Activity: Ping the Internet Ping is a networking utility used by network administrators to measure the latency on the Internet.
78 Activity: Ping the Internet Try it. Use CentralOps.net Ping utility to test the reachability of certain hosts. (Click the image. Then select the Ping tool.) Some hosts to try. Report back the average latency of these servers. o (Trinity College CS department server) o mit.edu (Main gateway to MIT) o mobile-csp.org (Mobile CSP web site server)
79 Latency Latency is a measure of the time it takes a piece of data to reach its destination. It is typically measured in milliseconds (ms), thousandths of a second. Ping is a utility that can be used to measure network latency. Click on the ping gateway to try some latency tests.
Chapter Topics. The History of the Internet. Chapter 7: Computer Networks, the Internet, and the World Wide Web
Chapter Topics Chapter 7: Computer Networks, the Internet, and the World Wide Web CS10051: Intro. to Computer Science Kent State University History of the Internet History of the World Wide Web Internet
The internet What is it??
The internet What is it?? The internet is a global system of interconnected computer network that use the standard internet protocol suit (TCP/IP) to serve billions of users word wide. In other word it
Typical Network Uses
Computer Networks Introduction The next Great Revolution - Computer Networks- computers connected together for exchanging information Our information-oriented society - applications in education, commerce,
The Internet and the World Wide Web
Technology Briefing The Internet and the World Wide Web TB5-1 Learning Objectives TB5-2 Learning Objectives TB5-3 How Did the Internet Get Started? Internet derived from internetworking 1960s U.S. Defense
Chapter 3. E-commerce The Evolution of the Internet 1961 Present. The Internet: Technology Background. The Internet: Key Technology Concepts
E-commerce 2015 business. technology. society. eleventh edition Kenneth C. Laudon Carol Guercio Traver Chapter 3 E-commerce Infrastructure: The Internet, Web, and Mobile Platform Copyright 2015 Pearson
Chapter 15 Networks. Chapter Goals. Networking. Chapter Goals. Networking. Networking. Computer network. Node (host) Any device on a network
Chapter Goals Chapter 15 Networks Describe the core issues related to computer networks List various types of networks and their characteristics Explain various topologies of local-area networks Explain
Computer Networks. Computer Networks. Telecommunication Links. CMPUT101 Introduction to Computing - Spring Chapter 12: Computer Networks 1
Computer Networks Chapter 12 Topics: Communication links LAN / WAN Internet / WWW CMPUT101 Introduction to Computing (c) Yngvi Bjornsson 1 Computer Networks A computer network is a set of independent computer
Component 4: Introduction to Information and Computer Science
Component 4: Introduction to Information and Computer Science Unit 2: Internet and the World Wide Web Lecture 1 This material was developed by Oregon Health & Science University, funded by the Department
Introduction to Computer Networks INTRODUCTION TO COMPUTER NETWORKS
INTRODUCTION TO COMPUTER NETWORKS Computer Networks Computer network connects two or more autonomous computers. The computers can be geographically located anywhere. LAN, MAN & WAN Network in small geographical
An internet or interconnected network is formed when two or more networks are connected.
Computers I 3. The Internet An internet or interconnected network is formed when two or more networks are connected. The most notable internet is called the Internet and is composed of millions of these
Web Systems. Lecture 1. An Overview of Web Systems
Web Systems Lecture 1 An Overview of Web Systems Paul I-Hai Lin, Professor of Electrical and Computer Engineering Technology Dept. of Computer, Electrical, and Information Technology College of Engineering,
networks List various types of networks and their
Chapter 15 Networks Chapter Goals Describe the core issues related to computer networks List various types of networks and their characteristics Explain various topologies of local-area networks Explain
Class X Subject : IT (Vocational) Chapter -1 Ouestion / Answer
Class X Subject : IT (Vocational) Chapter -1 Ouestion / Answer Q1 What is a computer network? A computer network, often simply referred to as a network, is a collection of computers and other hardware
Chapter 7. Telecommunications, the Internet, and Wireless Technology
Chapter 7 Telecommunications, the Internet, and Wireless Technology LEARNING OBJECTIVES What are the principal components of telecommunications networks and key networking technologies? What are the different
Network Connectivity and Mobility
Network Connectivity and Mobility BSAD 141 Dave Novak Topics Covered Lecture is structured based on the five elements of creating a connected world from the text book (with additional content) 1. Network
Networks. Computer Technology
Networks Computer Technology Network Two or more computers and other devices (printers or scanners) that are connected, for the purpose of sharing data and programs Advantages of Networks Communication
Chapter 3. The Basics of Networking
Chapter 3 The Basics of Networking Learning Objectives Tell whether a communication technology (Internet, radio, LAN, etc.) is synchronous or asynchronous; broadcast or point-to-point Explain the roles
Chapter 4: Networking and the Internet. Network Classifications. Network topologies. Network topologies (continued) Connecting Networks.
Chapter 4: Networking and the 4.1 Network Fundamentals 4.2 The 4.3 The World Wide Web 4.4 Protocols 4.5 Security Network Classifications Scope Local area network (LAN) Metropolitan area (MAN) Wide area
An electronic transmission of information that has been encoded digitally for storage and processing by computers.
An electronic transmission of information that has been encoded digitally for storage and processing by computers. Transmission of electronic data over some media. The media used to transmit may be guided
Lecture #25: Networks and Communications. Communication and Networks. What will we learn?
Lecture #25: Networks and Communications Communication and Networks What will we learn? How a communications system works What a network is What networks used for What network operating systems do What
1. Web Technology... 6
TABLE OF CONTENTS 1. Web Technology... 6 1.1. Introduction (Hypertext, URL, Domain Name)...6 1.2. Web Browser and ISP...8 1.3. Upload and download files...10 1.4. Control of Internet...10 2. E-mail components
Internet. Class-In charge: S.Sasirekha
Internet Class-In charge: S.Sasirekha COMPUTER NETWORK A computer network is a collection of two or more computers, which are connected together to share information and resources. Network Operating Systems
ITP 140 Mobile Applications Technologies. Networks
ITP 140 Mobile Applications Technologies Networks A First Look Under the Hood 2 3 Communication Channels Mediums for transporting data from one system to another Physical Twisted Pair (CAT-3, CAT-5/6)
Your computer, the internet, and the web. A brief overview
Your computer, the internet, and the web A brief overview Your computer Windows computers place the operating system on the C: drive Your computer Hard disks are organized into files and folders using
Chapter 2 Communicating Over the Network
Chapter 2 Communicating Over the Network Elements of Communication Communicating the Messages Continuous stream of bits 00101010100101010101010101010101010 I have to wait Single communications (e.g. video,
6 Computer Networks 6.1. Foundations of Computer Science Cengage Learning
6 Computer Networks 6.1 Foundations of Computer Science Cengage Learning Objectives After studying this chapter, the student should be able to: 6.2 Describe network criteria, physical structures and categories
Özgür ZEYDAN (PhD.)
Özgür ZEYDAN (PhD.) http://cevre.beun.edu.tr/zeydan/ Computer Network A group of computer systems and other computing hardware devices that are linked together through communication channels. Purpose:
T e l e c o m m u n i c a t i o n s, t h e i n t e r n e t, a n d W i r e l e s s t e c h n o l o g y
T e l e c o m m u n i c a t i o n s, t h e i n t e r n e t, a n d W i r e l e s s t e c h n o l o g y C h a p t e r 7 Jun Akizaki The Power of PowerPoint WELCOME group members: 1. Dewi Setyani 16808144017
Communications and Networks
Information Technology Skills (DUT 122) CHAPTER 6: Communications and Networks Miss Wan Nor Ashiqin Wan Ali School of Human Development and Technocommunication Objectives Overview Discuss the purpose of
Local area network (LAN) Wide area networks (WANs) Circuit. Circuit switching. Packets. Based on Chapter 2 of Gary Schneider.
Local area network (LAN) Network of computers located close together Wide area networks (WANs) Networks of computers connected over greater distances Based on Chapter 2 of Gary Schneider. (2009). E-Business.
The Internet. Connecting to the internet. Role of the ISP. Who is online? Internet users by country 2/18/2009. The Internet More than Just WWW
The Internet What does it mean to be connected to the internet? I.e. What does the internet do?? What do you need to connect your computer to the internet as opposed to any other network? The Internet
Computer Networking. Chapter #1. Dr. Abdulrhaman Alameer
Computer Networking Chapter #1 Dr. Abdulrhaman Alameer What is Computer Network? It is a collection of computers and devices interconnected by communications channels that facilitate communications among
VISUAL SUMMARY COMMUNICATION CHANNELS COMMUNICATIONS. Communications and Networks
Rev.Confirming Pages VISUAL SUMMARY Communications and Networks COMMUNICATIONS COMMUNICATION CHANNELS Communications is the process of sharing data, programs, and information between two or more computers.
Scale Yourself. Lesson 3: Introduction to Internet Technology. Computer Technology 3/13/2015
Computer Technology Lesson 3: Introduction to Internet Technology Learning Goal: Students will be able to understand the elements of a network. Scale Yourself 4 I do understand the elements of a network.
The Internet Advanced Research Projects Agency Network (ARPANET) How the Internet Works Transport Control Protocol (TCP)
The Internet, Intranets, and Extranets 1 The Internet The Internet is a collection of interconnected network of computers, all freely exchanging information. These computers use specialized software to
BLM6196 COMPUTER NETWORKS AND COMMUNICATION PROTOCOLS
BLM6196 COMPUTER NETWORKS AND COMMUNICATION PROTOCOLS Prof. Dr. Hasan Hüseyin BALIK (1 st Week) Outline Course Information and Policies Course Syllabus 1. Data Communications, Data Networks, and the Internet
ITP 140 Mobile Applications Technologies. Networks
ITP 140 Mobile Applications Technologies Networks A First Look Under the Hood 2 3 Communication Channels Mediums for transporting data from one system to another Physical Twisted Pair (CAT-3, CAT-5/6)
E-Commerce. Infrastructure I: Computer Networks
E-Commerce Infrastructure I: Computer Networks Almost all computers today are networked or part of a distributed system. I will provide an overview of networking and a basic description of network technology.
Chapter 3 The Basics of Networking
Fluency with Information Technology 7 th Edition Chapter 3 The Basics of Networking HTML Hypertext Markup Language Layout of document (Margin, font, text, image, ) Jump from point to point (non-linear)
Introduction to Computer Science. William Hsu Department of Computer Science and Engineering National Taiwan Ocean University
Introduction to Computer Science William Hsu Department of Computer Science and Engineering National Taiwan Ocean University Chapter 4: Networking and the Internet No one owns the Internet, and only one
The Internet. Tim Capes. November 7, 2011
The Internet Tim Capes November 7, 2011 What is the Internet? The internet is a global system consisting of millions if interconnected networks. These individual networks are anything from local (a Home
Introduction to Computer Science 2017 Networking. Sören Schwertfeger
Sören Schwertfeger Outline Internet History of the Internet Internet Structure Internet Protocols Network layer details 1. Physical Layer 2. Data Link Layer 3. Network Layer Internet: Huge network of networks
Chapter 4 The Internet
Chapter 4 The Internet Dr. Farzana Rahman Assistant Professor Department of Computer Science James Madison University Chapter 4: Networking and the Internet 4.1 Network Fundamentals 4.2 The Internet 4.3
Networks: Communicating and Sharing Resources
Networks: Communicating and Sharing Resources 1 Local Area Networks Client/server networks o Made up of one or more file servers and clients (any type of computer) o Client software enables requests to
Chapter 2A. The Internet s History
Chapter 2A The Internet and the World Wide Web 1 The Internet s History At about 10:30 PM on October 29th, 1969, a connection was established over a 50 kbps line provided by the AT&T telephone company,
Fundamentals of Information Systems, Seventh Edition
Fundamentals of Information Systems, Seventh Edition Chapter 4 Telecommunications, the Internet, Intranets, and Extranets Fundamentals of Information Systems, Seventh Edition 1 An Overview of Telecommunications
Local Area Networks; Ethernet
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
How the Web Works. Chapter 1. Modified by Marissa Schmidt Pearson
How the Web Works Chapter 1 Modified by Marissa Schmidt 2015 Pearson Fundamentals ofhttp://www.funwebdev.com Web Development Objectives 1 Definitions and History 2 Internet Protocols 3 Client-Server Model
Management Information Systems
Telecommunications, the Internet, and Wireless Technology Lecturer: Richard Boateng, PhD. Lecturer in Information Systems, University of Ghana Business School Executive Director, PearlRichards Foundation,
Discovering Computers Chapter 9 Communications and Networks
Discovering Computers 2009 Chapter 9 Communications and Networks Chapter 9 Objectives Discuss the components required for successful communications Identify various sending and receiving devices Describe
Chapter 4: Networking and the Internet. Figure 4.1 Network topologies. Network Classifications. Protocols. (continued)
Chapter 4: Networking and the Internet Computer Science: An Overview Eleventh Edition by J. Glenn Brookshear Chapter 4: Networking and the Internet 4.1 Network Fundamentals 4.2 The Internet 4.3 The World
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
13/01/2019. ACS 3907 E-Commerce. E-Commerce Infrastructure: The Internet, Web, and Mobile Platform. The Internet
ACS 3907 E-Commerce Instructor: Kerry Augustine January 10 th 2019 E-Commerce Infrastructure: The Internet, Web, and Mobile Platform The Internet Worldwide Web (WWW) network of computer networks built
Internet A Brief Tutorial. Jean Walrand EECS U.C. Berkeley
Internet A Brief Tutorial Jean Walrand EECS U.C. Berkeley Contents History Key Ideas Protocols Technology Research History 1962 L. Kleinrock proposes Packet Switching 1966 L. Roberts proposes architecture
Inside vs. Outside. Inside the Box What the computer owner actually has possession of 1/18/2011
Outside the Box: Networks and The Internet Don Mason Associate Director Copyright 2011 National Center for Justice and the Rule of Law All Rights Reserved Inside vs. Outside Inside the Box What the computer
"The Internet. All the piracy and none of the scurvy." -- Anonymous
Bridges To Computing General Information: This document was created for use in the "Bridges to Computing" project of Brooklyn College. You are invited and encouraged to use this presentation to promote
E-commerce Kenneth C. Laudon Carol Guercio Traver. business. technology. society. tenth edition
E-commerce 2014 business. technology. society. tenth edition Kenneth C. Laudon Carol Guercio Traver Copyright 2014 Pearson Education, Inc. Publishing as Prentice Hall Chapter 3 E-commerce Infrastructure:
8 9 Before: Computers are categorized into three main categories from least to most powerful: microcomputers minicomputers mainframe computers Today:
1 Computer, Internet, and Network Basics 2 Computer Basics A computer system includes a computer, peripheral devices, and software Computer refers to a device that accepts data as input, processes data,
Introduction to Information Science and Technology 2017 Networking I. Sören Schwertfeger 师泽仁
I Sören Schwertfeger 师泽仁 Outline Internet History of the Internet Internet Structure Internet Protocols Network layer details 1. Physical Layer 2. Data Link Layer 3. Network Layer Internet: Huge network
Prepared by Agha Mohammad Haidari Network Manager ICT Directorate Ministry of Communication & IT
Network Basics Prepared by Agha Mohammad Haidari Network Manager ICT Directorate Ministry of Communication & IT E-mail :Agha.m@mcit.gov.af Cell:0700148122 After this lesson,you will be able to : Define
Networks University of Stirling CSCU9B1 Essential Skills for the Information Age. Content
Networks 2 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? 1. Phone modem 2. Digital subscriber
AQU Information Systems Fundamentals Spring 2012 Pg. 9.1
AQU Information Systems Fundamentals Spring 2012 Pg. 9.1 c h a p t e r 9 THE INTERNET & THE NEW INFORMATION TECHNOLOGY INFRASTRUCTURE 9.1 LEARNING OBJECTIVES Describe features of infrastructure & connectivity
Announcements. TAs office hours: Mohamed Grissa: Mohamed Alkalbani:
Announcements TAs office hours: Mohamed Grissa: grissam@oregonstate.edu Tuesday: 4-5 Friday: 11-12 Mohamed Alkalbani: alkalbmo@oregonstate.edu Wednesday: 11-12 Thursday: 11-12 Lecture slides: Will be posted
The Internet. and the World Wide Web
The Internet and the World Wide Web Discussion What is the internet? What do you use the internet for? History Advanced Research Projects Agency created ARPANET in the late 1960s. 1970s more universities
Navpreet Singh INTRODUCTION TO COMPUTER NETWORKS. Computer Centre Indian Institute of Technology Kanpur Kanpur INDIA
INTRODUCTION TO COMPUTER NETWORKS Navpreet Singh Computer Centre Indian Institute of Technology Kanpur Kanpur INDIA (Ph : 2597371, Email : navi@iitk.ac.in) About Myself About Myself I am Network Manager
Outside the Box: Networks and The Internet
Outside the Box: Networks and The Internet Don Mason Associate Director Copyright 2011 National Center for Justice and the Rule of Law All Rights Reserved Inside vs. Outside Inside the Box What the computer
Computer Networks. Lecture 1: Introduction. Computer Networking: A Top Down Approach. Dr. Yaoqing Liu
Computer Networks Lecture 1: Introduction Dr. Yaoqing Liu liu@clarkson.edu Computer Networking: A Top Down Approach 6 th edition Jim Kurose, Keith Ross Addison-Wesley March 2012 Based on slides by J. F.
From administrivia to what really matters
From administrivia to what really matters Questions about the syllabus? Logistics Daily lectures, quizzes and labs Two exams and one long project My teaching philosophy...... is informed by my passion
Internet Architecture
Internet Architecture Lecture 2: How Computer Networks Send Data Across the Internet Assistant Teacher Samraa Adnan Al-Asadi 1 Introduction When you send information across the Internet, the Transmission
Skill Area 209: Use Internet Technology. Software Application (SWA)
Skill Area 209: Use Internet Technology Software Application (SWA) Skill Area 209.1 Use Browser for Research (10hrs) 209.1.1 Familiarise with the Environment of Selected Browser Internet Technology The
Session 4 Networks II
15.561 Information Technology Essentials Session 4 Networks II Copyright 2005 Thomas Malone, Chris Dellarocas Acknowledgments: Slides marked CD are adapted from Chris Dellarocas, U. Md.. Outline Network
Basic Internet. Basic Internet
Basic Internet Basic Internet What is the Internet? The Internet is a global network connecting millions of computers which are linked together around the world, cooperating and communication with each
E-commerce Kenneth C. Laudon Carol Guercio Traver. business. technology. society. tenth edition
E-commerce 2014 business. technology. society. tenth edition Kenneth C. Laudon Carol Guercio Traver Copyright 2014 Pearson Education, Inc. Publishing as Prentice Hall e Commerce Course : Chapter 3 E-commerce
2/29/2012. Part 1: Networking overview Part 2: Data transfer methods Part 3: Communication Channels
Jim Williams HONP-112 Week 7 Part 1: Networking overview Part 2: Data transfer methods Part 3: Communication Channels A Network consists of at least two computers, and other peripherals (like a printer)
Networking and the Web Reminder: Next Quiz on 4/15
Networking and the Web Reminder: Next Quiz on 4/15 World-Wide Web Wide use of computers by the general public is directly attributable to the creation of the World Wide Web Key components of the web Computer
3 The Internet and the electronic mail
3 The Internet and the electronic mail The chapter concerns the following; ² Internet operation ² Internet services ² Searching information ² Uniform Resource Locator-URL ² IP addresses ² Domain name ²
History of communication
History of communication Prehistoric era: beginnings of human language -3600 BC: beginnings of writing 15 th century: printing 19 th century: telephone, radio broadcasting, photography, cinema 20 th century:
CHAPTER 2: NETWORKS AND THE INTERNET
CHAPTER 2: NETWORKS AND THE INTERNET Multiple Choice 1. What type of cable do most networks use? A. Net cable B. Category 3 cable C. Phone cable D. Category 5 cable The answer is D 2. The connector used
Introduction to Network Technologies & Layered Architecture BUPT/QMUL
Introduction to Network Technologies & Layered Architecture BUPT/QMUL 2015-3-5 Review What is the Internet? How does it work? When & how did it come about? Who controls it? Where is it going? 2 Agenda
Data Communication. Introduction of Communication. Data Communication. Elements of Data Communication (Communication Model)
Data Communication Introduction of Communication The need to communicate is part of man s inherent being. Since the beginning of time the human race has communicated using different techniques and methods.
Chapter 1: introduction
Chapter 1: introduction our goal: v get feel and terminology v more depth, detail later in course v approach: use Internet as example overview: v what s the Internet? v what s a protocol? v edge; hosts,
CNT 4007 Computer Networks - Chapter 1 : Overview
CNT 4007 Computer Networks - Chapter 1 : Overview Jonathan Kavalan, Ph.D. Department of Computer, Information Science and Engineering (CISE), University of Florida 1 Chapter 1: Introduction Our goal: get
The Basics of Networking
c h a p t e r 3 The Basics of Networking Making the Connection lawrence snyder Times are Changing Nowhere Is Remote People are more interconnected Social interactions are changing Freedom of Seach and
Unit 5: Computer Networking CS 101, Fall 2018
Unit 5: Computer Networking CS 101, Fall 2018 Learning Objectives After completing this unit, you should be able to: Describe the physical structure of the Internet (routers, cables). Define CSMA/CD, CSMA/CA,
Objectives Overview. Chapter 9 Networks and Communications. Discovering Computers Instructor: Imran Khalil MSc-IT 1 st semester Fall 2016
Chapter 9 Networks and Communications Instructor: Imran Khalil MSc-IT 1 st semester Fall 2016 Discovering Computers 2012 Your Interactive Guide to the Digital World Objectives Overview Discuss the purpose
Cisco Cisco Sales Expert. Practice Test. Version
Cisco 646-204 646-204 Cisco Sales Expert Practice Test Version 2.2 QUESTION NO: 1 Cisco 646-204: Practice Exam QUESTION NO: 2 Which two characteristics of optical networks data to be transmitted over extremely
Chapter 4: Networking and the Internet
Chapter 4: Networking and the Internet 2015 Pearson Education Limited 2015 Chapter 4: Networking and the Internet 4.1 Network Fundamentals 4.2 The Internet 4.3 The World Wide Web 4.4 Internet Protocols
VoIP Dictionary, Glossary and Terminology
VoIP Dictionary, Glossary and Terminology The following provides a glossary of terms and definitions that are commonly used in VoIP Solutions. We hope this will provide a good reference for you during
Technology in Action. Chapter Topics. Participation Question. Participation Question 8/17/11. Chapter 7 Networking: Connecting Computing Devices
Technology in Action Chapter 7 Networking: Connecting Computing Devices 1 2 Chapter Topics Networking fundamentals Network architecture Network components Peer-to-peer networks Ethernet networks Power-line
Using the Internet and the World Wide Web
Using the Internet and the World Wide Web Computer Literacy BASICS: A Comprehensive Guide to IC 3, 3 rd Edition 1 Objectives Understand the difference between the Internet and the World Wide Web. Identify
Chapter. 6.1 Copyright 2011 Pearson Education, Inc. publishing as Prentice Hall
Chapter 6 Telecommunications, the Internet, and Wireless Technology 6.1 Copyright 2011 Pearson Education, Inc. publishing as Prentice Hall STUDENT LEARNING OBJECTIVES What are the principal components
Networks 1. Content. 3 Lectures on Networks Networks 1. Page 1
Networks 1 Lecture Networks 1/Slide 1 Content 3 Lectures on Networks Networks 1 What is a Network? What is a Computer Network? Types of Networks Internet Who owns the Internet? The World Wide Web Mobile
CS3600 SYSTEMS AND NETWORKS
CS3600 SYSTEMS AND NETWORKS NORTHEASTERN UNIVERSITY Lecture 15: Networking overview Prof. (amislove@ccs.neu.edu) What is a network? 2 What is a network? Wikipedia: A telecommunications network is a network
Router Router Microprocessor controlled traffic direction home router DSL modem Computer Enterprise routers Core routers
Router Router is a Microprocessor controlled device that forwards data packets across the computer network. It is used to connect two or more data lines from different net works. The function of the router
Chapter by Prentice Hall
Chapter 6 Tl Telecommunications, the Internet, and Wireless Technology 6.1 2007 by Prentice Hall STUDENT LEARNING OBJECTIVES What are the principal components of telecommunications networks and key networking
Data and Computer Communications
Data and Computer Communications CHAPTER 1 Tenth Edition by William Stallings Data Communications, Data Networks, and the Internet Data and Computer Communications, Tenth Edition by William Stallings,
Network and Mobile Compu4ng in the 20 th Century and Beyond. COMP 1400 Memorial University Winter 2015
Network and Mobile Compu4ng in the 20 th Century and Beyond COMP 1400 Memorial University Winter 2015 What s the Internet: nuts and bolts view PC server wireless laptop smartphone wireless links wired
CS321: Computer Networks Introduction to Computer Networks and Internet
CS321: Computer Networks Introduction to Computer Networks and Internet Dr. Manas Khatua Assistant Professor Dept. of CSE IIT Jodhpur E-mail: manaskhatua@iitj.ac.in What is Data Communication? Data communications
CPET 499/ITC 250 Web Systems. Topics
CPET 499/ITC 250 Web Systems Week 1 Web System Infrastructure, Protocols, and Applications Paul I-Hai Lin, Professor Dept. of Computer, Electrical, and Information Technology College of Engineering, Technology,
Discovering Computers Chapter 2 The Internet and World Wide Web
Discovering Computers 2008 Chapter 2 The Internet and World Wide Web Just remember It took 38 years for radio to reach 50 million users 13 years for television to reach 50 million users Less than 4 years