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Getting Connected Overview

Getting Connected Overview. Essential Questions. What are the ways to transfer files between computers? How do you use the tools? How does the connectivity increase your productivity?. Objectives.

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Getting Connected Overview

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  1. Getting ConnectedOverview

  2. Essential Questions • What are the ways to transfer files between computers? • How do you use the tools? • How does the connectivity increase your productivity?

  3. Objectives • Demonstrate basic operational procedures for Internet client software including e-mail, Network News, FTP, Telnet from multiple client stations. • Use FTP to both send files to and retrieve files from a remote system.

  4. The Internet Today • Worldwide network of networks • Government agencies, educational institutions, hospitals, and commercial organizations • Phenomenal growth - 1 million/month • Largest connection of networks in the world

  5. How the Internet Works • Local Connections: • Modem • ISDN • DSL • Cable • Satellite • Businesses/Universities • T1, T3 • Router at provider’s point-of-presence • Small providers  big providers

  6. The Internet uses TCP/IP • TCP/IP is the basis for the Internet. • IP resides in the Network Layer. • TCP resides in the Transport Layer. • Network Protocols • IP • TCP • Application Protocols • Telnet • HTTP • FTP • SMTP • SNMP • DNS

  7. Internet Protocol (IP) • IP provides delivery services taking care of addressing ensuring the routers know what to do with your data when it arrives. • Every computer on the Internet has a unique address. • Information sent across IP networks is broken up into bite-sized pieces, called packets. • The information within a packet is usually between 1 and about 1500 characters long.

  8. Transmission Control Protocol • Ensures reliability. • TCP takes the information you want to transmit and breaks it into pieces. • TCP numbers each piece so receipt can be verified and the data can be put back in the proper order.

  9. TCP/IP Applications/Services • SLIP and PPP • Terminal Emulation (Telnet) • File Transfer Protocol (FTP) • HyperText Transfer Protocol (HTTP) • Simple Mail Transfer Protocol (SMTP) • Simple Network Management Protocol (SNMP) • Domain Name Service (DNS)

  10. Various Connectivity Types • Telnet: Terminal Emulation • Logs into remote host systems • FTP: File Transfer Protocol • Client computer  Remote Server • Logs in to the special file system

  11. Various Connectivity Types • HTTP: Hypertext Transfer Protocol • Underlies the WWW • HTML is standardized language • Many different file types accessible. • SMTP: Simple Mail Transfer Protocol • Provides a store-and-forward mail capability between host computer mail systems on the network • MIME: Multimedia Internet Mail Exchange • Standard for document attachments.

  12. DNS: Domain Name Service • Maps network address numbers to an easy to remember name • Telnet, FTP and SMTP access DNS to locate names you’ve specified and resolves them to a numeric address and inserts it into a message for transport. 136.24.64.138 www.name.com

  13. Concept Maps

  14. Evaluations

  15. From Networking 101 Jim Cabral, Puget Technology Group, Inc. & Tammy Ruth, Children’s Hospital and Medical Center www.pugettech.comcabralje@pugettech.com truth@chmc.org References

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