Zusammenfassung der Ressource
Chapter 2-OSI Model
- Application Layer
- Presentation Layer
- Session Layer
- Transport Layer
- Network Layer
- Data Link Layer
- Physical Layer
- The actual "wire". Data called bits
- DEVICES: ethernet
cable, IR signals, hubs,
extenders
- Media Access Control
- Gives the
physical MAC
addresses
- Logical Link Control
- ID's network
layer protocols
and
encapsulating
- DEVICES: Bridges, Switches.
Data called frames
- IP/network addressing. Data called packets
- DEVICES: Routers
- Chooses TCP or UDP and
responsible for reliable
delivery of UDP. Data called Segments
- Syn, Syn/Ack, Ack
- Flow Control
- Windowing
- Acknowledgements
- Sets up the conversation between the two
hosts. Responsible for keeping different
applications' data separate. Data called PDU
- Prepares data to be properly
formatted for presentation. Also,
compression and encryption. Data called PDU
- Evaluates if resources are
available and allocates if
they are. Data called Protocol Data Unit (PDU)