| File | Description | Status |
|---|---|---|
| Basic | Networking Fundamentals | ✅ Done |
| Learn 01 | Network Concepts | ✅ Done |
| OSI Model | 7 Layer Model | ✅ Done |
| Layer | Name | Protocol/Example | |——-|——|——————| | 7 | Application | HTTP, FTP, SMTP | | 6 | Presentation | SSL, TLS, JPEG | | 5 | Session | NetBIOS, RPC | | 4 | Transport | TCP, UDP | | 3 | Network | IP, ICMP, Router | | 2 | Data Link | Ethernet, Switch | | 1 | Physical | Cables, Hubs |
| Feature | TCP | UDP | |———|—–|—–| | Connection | Connection-oriented | Connectionless | | Reliability | Guaranteed delivery | No guarantee | | Order | Ordered | Unordered | | Speed | Slower | Faster | | Use Case | HTTP, Email | Video, Gaming |
| Port | Service | |——|———| | 22 | SSH | | 80 | HTTP | | 443 | HTTPS | | 3306 | MySQL | | 5432 | PostgreSQL | | 27017 | MongoDB |
Last Updated: March 2026