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Data transmission

This article delves into the essentials of data transmission and error correction, focusing on techniques such as Stop-and-Wait ARQ and Continuous ARQ. It covers various transmission protocols including asynchronous and synchronous methods like FTPs, Xmodem, Ymodem, Zmodem, and Kermit. Additionally, the discussion explores the roles of Parity, checksums, and CRC in ensuring data integrity, as well as protocols like HDLC and Token Ring that support effective communication in networked environments.

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Data transmission

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Presentation Transcript

  1. Data transmission

  2. Error correction • Stop and wait error ARQ • Continuous ARQ • (Automatic Repeat reQuest)

  3. Protocols (p. 147) • Asynchronous transmission • FTPs • Xmodem, ymodem, zmodem and kermit • Synchronous Protocols • SDLC, HDLC, Token ring • Ethernet • SLIP, PPP

  4. Asynchronous transmission • One byte per time • Parity • Full duplex • Continuous ARQ

  5. FTPs (p. 149) • STX (ASCII: start of text) • Packet # • Packet # complimet • Message • Checksum or CRC

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