ASSIGNMENT OF ROUTERS example, packet, complexity, transferred, advance, interfaces, packets, dedicated, router, reliability

What is a router? It is a computer that has several network 1, and different interfaces belong to different networks. The task of the 2 is to forward data packets between interfaces. Network interfaces can be different - Ethernet network cards, modems on 3 and switched lines, etc.
Depending on the 4 of the network, we need either static or dynamic routing, or a combination of both. Static routing is used when 5 paths can be specified in 6. One of the real-life examples: a network on a thin coaxial cable is very unreliable, and to increase the 7, a computer with two network interfaces is placed somewhere in the middle of it. Another 8 is a LAN connection to an Internet service provider. It is known that all 9 that do not belong to this local network, must be 10 to the provider, and he himself must deal with them.