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Connections

Connections. by Jaime Burkhalter (A.K.A. Gerald Knezek) Professor of Technology & Cognition University of North Texas. Telecommunications. Tele - at a distance Communications - exchange of information. Computer Networks. DAN Desktop Area Network Cluster less than 30 machines

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Connections

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  1. Connections by Jaime Burkhalter (A.K.A. Gerald Knezek) Professor of Technology & Cognition University of North Texas

  2. Telecommunications • Tele - at a distance • Communications - exchange of information

  3. Computer Networks • DAN • Desktop Area Network • Cluster • less than 30 machines • near to each other (continued)

  4. (continued) • LAN • local area network • less than 9 miles • MAN • metropolitan area network • less than 50 miles • WAN • wide area network • greater than 50 miles

  5. Internet • Network of networks • All use TCP/IP protocols • Support basic services • Email (SMTP) • Telnet • FTP (continued)

  6. (continued) • Supports numerous servers and clients • JOVE Unix system at UNT, Tenet in Austin • Listservs • Gopher, WWW, etc.

  7. Equipment for Interactive Access to Basic Services(Real-Internet-Time) • Personal Computer • Modem (modulator - demodulator) (continued)

  8. (continued) • Terminal Emulation Software • ProComm+ (IBM) • Zterm (Mac) • Phone Line

  9. Modem Communication Concepts • Local Echo • Originate vs. Answer Mode • Serial vs. Parallel Transmission (continued)

  10. (continued) • Start and Stop Bits • Transmission Speed (baud vs. bps) • Parity • Handshaking • Terminal Types

  11. Distributed Modes of Basic Services • Not Real-Internet-Time (NRIT) • Email • POP Mail (Post Office Protocol, DOS/UNIX Environments) • Eudora (GUI POP-like system for Mac) (continued)

  12. (continued) • ftp • Email Gateway • Await file delivery

  13. Interactive Access to Full Internet Services • High Speed Line Preferred • Personal Computer must be ITI • (In the Internet) • must have IP address • 129.120.20.127 for example (continued)

  14. (continued) • Must have Provider-Client Link (TCP/IP) • SLIP • PPP (Preferred Service available at UNT) • Wireless (experimental)

  15. High Speed vs. Low Speed Lines • Low Speed Lines • 28.8 bps • Medium Speed Lines • ISDN (64 kbps) • High Speed Lines • T1 (1.44 Mbps)

  16. The End

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