How does a SOHO router works

A small office/home router, also known as a SOHO router, is simple in design, but its basic functions are similar to other enterprise-level routers. Thus, knowing how it works helps us to understand how a router works in general.
The secret of subnet mask video link
https://www.youtube.com/watch?v=yLeuGOOrUvo

Playlists:
Switching and Routing
https://www.youtube.com/watch?v=ck3gx9HB9-k&list=PLSNNzog5eydtmcbcbc1b8pVRkgre3vNUy
IPv4 Basics
https://www.youtube.com/watch?v=vcArZIAmnYQ&list=PLSNNzog5eydt_plAtt3k_LYuIXrAS4aDZ
Cyber Attacks and Defense
https://www.youtube.com/watch?v=LXd2uP1qKDE&list=PLSNNzog5eyduYEO-6i6B0uShqjusETugo
Basic Cryptography
https://www.youtube.com/watch?v=vk3py9M2IfE&list=PLSNNzog5eyduN6o4e6AKFHekbH5-37BdV
Advanced Cryptography:
https://www.youtube.com/watch?v=TmA2QWSLSPg&list=PLSNNzog5eydtwsdT__t5WtRgvpfMzpTc7
Public Key Infrastructure
https://www.youtube.com/watch?v=UbMlPIgzTxc&list=PLSNNzog5eyduzyJ8_6Je-tYOgMHvo344c

Remote Access & WAN Technologies
https://www.youtube.com/watch?v=B1tElYnFqL8&list=PLSNNzog5eyduTVeiVQRV_AM35YKSrFgzr .