From the chapter of Computer networks basics we learned about some important things. below I am mention all of those things.

1. we learned about OSI reference model which is Open System Interconnected model and it's layers

2. we gained the knowledge all of layers properly

3. we also learned about the best path selection 

4. we learned LLC, MAC, NIC, MAC Address, IP Address. 

5. Ip address is not changeable but mac address changable

That's all things we learned