1 / 12

Three-Layer Model

Three-Layer Model. Distributed data communications involves three primary components: Networks Computers Applications Three corresponding layers Network access layer Transport layer Application layer. Data Transmission. Application layer creates data block

otylia
Download Presentation

Three-Layer Model

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. Three-Layer Model • Distributed data communications involves three primary components: • Networks • Computers • Applications • Three corresponding layers • Network access layer • Transport layer • Application layer

  2. Data Transmission • Application layer creates data block • Transport layer appends header to create PDU (protocol data unit) • Destination SAP, Sequence #, Error-Detection Code • Network layer appends another header • Destination computer, facilities (e.g. “priority”)

  3. Protocols in a Simplified Architecture

  4. Operation of TCP/IP

  5. TCP & UDP

  6. IP Headers

  7. Operation of TCP/IP: Action at the Sender

  8. Operation of TCP/IP: Action at the Router

  9. Operation of TCP/IP: Action at the Receiver

  10. Open Systems Interconnection Developed by ISO Contains seven layers OSI

  11. The OSI Environment

  12. TCP/IP - OSI Comparison

More Related