OSI Layers

1. Physical

2. Data link
3. Network

4. Transmission

5. Session

6. Presentation

7. Application

1. Physical:

             1.1  Network connection types (Rj-45...)  

             1.2  Physical network topology (Bus...)

             1.3  Bit encoding

             1.4  Channel use

   2. Data link:

              2.1  Organizing the bits

              2.2  The IEEE 802 standard

       2.2.1  Media Access Control (MAC) 

• Logical Topology
• Media access Method
• Addressing

               
  2.2.2  Logical Link Control (LLC)

• Transmission Timing
• Error Control
• Flow Control 

     3. Network:

3.1  Network Addressing

3.2  Packet Switching (PDVs)

3.3  Routing

    4. Transmission: 

4.1  Segment Sequencing

4.2  Error Control

4.3  End of End flow control

     5. Session:

5.1 Connection Manager

• Simplex (T.V)

• Half - Duplex (Walki-Taki)

• Full - Duplex

5.2 Session Manager

    6. Presentation: 

6.1  Data Formating Translation

6.2  Data Encryption

    7. Application (Firewall)