# Networking
### Explain Protocols
- Rules governing data transfer

#### Types of Protocols
- **TCP**: Reliable data transfer
- **UDP**: Faster but less reliable
- **MAC Address**: Hardware identification
- **IP/DNS**: Internet addressing
- **Network Ports**: Data pathways
- **Subnetting**: Network segmentation
- **Firewall Usage**: Security measure
- **Other Protocols**: HTTP, FTP, SSH, TELNET
- **OSI Model**: 7-layer model for networking
- **VPNs**: Virtual Private Networks for secure communication