Answer: Layer 3
Explanation:
The layer 3 in OSI model is the network layer which is responsible for routing the packet across the network.
So we need a switch and a router for the LAN and WAN connection and both of them has to support the same protocols at layer 3.
Answer:
We don't know what you leaned.
But, I'll do it anyway.
1. Getting id's from html content.
2. Getting classes from html content.
3. changing text fonts.
4. animation.
5. Getting all of one element type from html content.
Explanation:
Start from here.