Gem Programmers

What is the OSI Model?

The OSI (Open Systems Interconnection) Model is a framework that explains how data travels from one device to another over a network. It consists of 7 layers, and each layer has a specific role in ensuring smooth communication.

Application Layer – User services (HTTP, FTP, DNS, SMTP)
Presentation Layer – Encryption, compression, formatting
Session Layer – Establishes and manages connections
Transport Layer – Reliable data transfer (TCP, UDP)
Network Layer – IP addressing and routing
Data Link Layer – Error detection and MAC addressing
Physical Layer – Cables, signals, and hardware devices

💡 Why is the OSI Model important?

Simplifies network communication
Helps troubleshoot network issues
Provides a standard for networking protocols
Makes learning networking easier

Brain: Mere paas 20 saal ka experience hai.
Me: No thanks, I use AI. 🤖😂

Jab competitor marketing pe paisa laga raha ho
aur aap sirf umeed pe. 💀