Why do we need a routing table on the host if the router has it?

Question

Computer networks

1. What is the routing table on the computer for if it is on the router? are they duplicated? or how?
2. How do pings go to the ya.ru network, for example, because I and the Yandex network are on different subnets, as I understand it, routing works here, but if so, where should the route to Yandex be written? and why is it not on the host?

Answer 1

Why do we need a routing table on the host if the router has it?

Well, at least in order to contact the router.

where should the route to Yandex be registered? and why is it not on the host?

On the host, you should have a route to your router. For traffic to go to the router.
And on the router there is a route to your provider.
And your provider has a route to the Yandex server.
To send a letter to the village of Gadyukino, Sydney, or Arkhangelsk, you do not need to know the routes to these settlements, it is enough to know the route to your post office in a neighboring house.
And even if you know the route, you will not tell the mail which route to send the letter. They will figure it out themselves.
The post office does not need to be told which route to take the letter from Moscow to St. Petersburg, they themselves know that the shortest route goes through Vladivostok.

Answer 2

This is the basics of networks for you. Explore the excellent ICND1 v2 course.

Answer 3

I showed the child, she understood.
https://www.youtube.com/watch?v=MBZux6d03jM