Answer:
Explanation:
1. This network device check the data package arriving from one computer and sends the data to a specific computer - Router
2. This network device sends the data packet from computer to all devices connected to it - Hub
3. This network device connects a LAN to the Internet - Default Gateway
4. This network device connects one LAN to another with the same protocol - Router
Just noticed Router appeared twice. If they must be all different, please mention that in comment and I will think of a different name.