Differentiate between half duplex and full duplex.

Half Duplex

- Communication occurs in one direction at a time.
- Devices share the same transmission medium, taking turns sending and receiving data.
- Uses a collision detection mechanism to prevent data loss during simultaneous transmissions.
- Example: Walkie-talkies

Full Duplex

- Communication occurs in both directions simultaneously.
- Devices have separate dedicated transmission and receiving paths.
- Eliminates the need for collision detection.
- Allows for higher bandwidth and faster data transfer.
- Example: Ethernet networks

Key Differences:

| Feature | Half Duplex | Full Duplex |
|---|---|---|
| Data Flow | One-way at a time | Two-way simultaneously |
| Medium Sharing | Shared | Dedicated |
| Collision Detection | Required | Not required |
| Data Transfer Rate | Lower | Higher |
| Applications | Less demanding (e.g., telephone, walkie-talkies) | High-bandwidth applications (e.g., video conferencing, file sharing) |