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PART I. Overview of Data Communications and Networking. Overview. Chapters. Chapter 1 Introduction. Chapter 2 Network Models. Chapter 1. Introduction. 1.1 Data Communication. Components Data Representation Direction of Data Flow.
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PART I Overview of Data Communications and Networking
Chapters Chapter 1 Introduction Chapter 2 Network Models
Chapter 1 Introduction
1.1 Data Communication Components Data Representation Direction of Data Flow
1.2 Networks Distributed Processing Network Criteria Physical Structures Categories of Networks
1.3 The Internet A Brief History The Internet Today
Chronology of Internet Evolution (W. Stallings) • 1996 ARPA packet-switching experiment • 1969 First ARPANET nodes operational • 1972 Distributed e-mail invented • 1973 Non US computer linked to ARPANET • 1975 ARPANET transitioned to Defense Communications Agency • 1980 TCP/IP experiment began • 1981 New host added every twenty days • 1983 TCP/IP switchover complete
Chronology of Internet Evolution continued (W. Stallings) • 1986 NSFnet backbone created • 1990 ARPANET retired • 1991 Gopher introduced • 1991 WWW invented • 1992 Mosaic introduced • 1995 Internet backbone privatized • 1996 OC-3 (155 Mbps) backbone built
Growth of the Internet • Exponential growth in the 1990s (Web technology is a major factor) • More than 30-million computers were attached to the Internet in 1998 • Doubling the size every 9 to 12 month in the 1990s
Growth of the ARPANET. (a) Dec. 1969. (b) July 1970.(c) March 1971. (d) April 1972. (e) Sept. 1972.
1.4 Protocols and Standards Protocols Standards Standards Organizations Internet Standards
Websites • http://www.isoc.org/internet/history/ • http://www.zakon.org/robert/internet/timeline/ • http://www.nsrc.org/codes/bymap/ntlgy/ (Internetology: 1993-97, by continents, by date) • http://www.w3.org/History.html (Web history) • http://en.wikipedia.org/wiki/Internet_backbone • http://www.nthelp.com/maps.htm (backbone maps) • http://directory.google.com/Top/Computers/Internet/Organizations/Internet_Backbone/