1 / 16

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

dspringer
Télécharger la présentation

Connections

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  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

More Related