Update wireless_iot.md

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| MQTT | - | Depends on network | Depends on network | TLS/SSL support, username/password, ACLs for permissions | Remote sensors, home automation, messaging |
| CoAP | - | Depends on network | Depends on network | DTLS for security, supports TLS for TCP | Smart homes, energy management |
**Frequency**: The radio frequency at which the protocol operates.
**Range**: The typical communication range between devices.
**Data Rate**: The maximum achievable data transmission speed.
**Security Features**:
- **Frequency**: The radio frequency at which the protocol operates.
- **Range**: The typical communication range between devices.
- **Data Rate**: The maximum achievable data transmission speed.
- **Security Features**:
- **AES-128 encryption**: A symmetric key encryption standard that provides good security.
- **WPA3/WPA2**: Security protocols for Wi-Fi networks, with WPA3 being the latest and most secure.
- **ECDH**: Elliptic Curve Diffie-Hellman, a secure key exchange protocol.