Mindmap

Unit 1 - OSI Model Summary

test testy Information Technology Englisch

Inhalt der Mindmap

OSI - Open Systems Interconnection
- Used as the standard for all networking protocols
Has 7 layers - each with a different function and purpose.
- Layer 7 - Application
  - Layer 6 - Presentation
    - Layer 5 - Session
      - Layer 4 - Transport
        Layer 3 - Network
        Layer 2 - Data Link
        Layer 1 - Physical
- Multiple layers offer 3 common troubleshooting practices
  - Top to Bottom
    - Troubleshooting starts at layer 7 and works down.
  - Bottom to Top
    - Troubleshooting starts at layer 1 and works up.
  - Divide and Conquer
    - Troubleshooting starts at one of middle layers
      - Moves up or down depending on results
Largely replaced by TCP/IP model