The Osi Model

2,118
-1

Published on

Published in: Technology
0 Comments
0 Likes
Statistics
Notes
  • Be the first to comment

  • Be the first to like this

No Downloads
Views
Total Views
2,118
On Slideshare
0
From Embeds
0
Number of Embeds
0
Actions
Shares
0
Downloads
144
Comments
0
Likes
0
Embeds 0
No embeds

No notes for slide

The Osi Model

  1. 1. The OSI Model Keith R. Barry Strayer University CIS 532
  2. 2. The Seven Layers <ul><li>Application </li></ul><ul><li>Presentation </li></ul><ul><li>Session </li></ul><ul><li>Transport </li></ul><ul><li>Network </li></ul><ul><li>Data Link </li></ul><ul><li>Physical </li></ul>
  3. 3. Application Layer <ul><li>Topmost Layer </li></ul><ul><li>User-interface: How the user communicates with the network </li></ul><ul><li>Responsible for interprocess communication </li></ul>
  4. 4. Presentation Layer <ul><li>Performs data compression and encryption </li></ul><ul><li>Essentially interprets data for use in the Application Layer </li></ul>
  5. 5. Sessions Layer <ul><li>Controls the connections/dialogues between computers on a network. </li></ul><ul><li>Utilizes checkpointing, adjournment and termination procedures in both half & full-duplex to control these connections. </li></ul>
  6. 6. Transport Layer <ul><li>Provides clear, transparent transfer of data so that upper level layers do not have to concern themselves with data reliability. </li></ul><ul><li>Data Packet switching is entirely handled on this layer. </li></ul><ul><li>Network devices such as Routers operate on this layer. </li></ul>
  7. 7. Network Layer <ul><li>Ethernets operate on this layer. </li></ul><ul><li>The Network Layer and Transport Layer can sometimes be confused; however, the Networking Layer deals with complex networking matter whereas the Transport Layer reside on the network itself. </li></ul><ul><li>Routing and Routers reside on this layer. </li></ul>
  8. 8. Data Link Layer <ul><li>This Layer provides procedural and functional means to transfer data from one network entity to another. </li></ul><ul><li>HDLC and ADCCP are protocols on this layer. </li></ul><ul><li>Networking devices such as bridges and switches operate on this layer. </li></ul>
  9. 9. Physical Layer <ul><li>Defines all electrical and physical specifications for a device on a network. </li></ul><ul><li>Devices like hubs, repeaters and network adapters operate on this layer. </li></ul><ul><li>A major function of this layer is the establishment and the termination of a connection with a network. </li></ul>

×