Fiber optic cable: Multimode vs Single-mode

Today my topic is fiber-optic cable. Specifically, I will talk about the structure of fiber cable, single mode fiber, multimode fiber, and their major differences. I will also compare the fiber-optic with twisted pair in terms of benefits and drawbacks.
Playlists:
Topology & cabling, & physical cabling structure:
https://www.youtube.com/watch?v=T5xQJk-Aamk&list=PLSNNzog5eydsZCgT6tlX7Zb4EU67_hxyA
Ethernet Basics:
https://www.youtube.com/watch?v=FkH_J-IZbpU&list=PLSNNzog5eydvAxPHJiDybPomC1fFHf1KE
IPv4 Basics:
https://www.youtube.com/watch?v=vcArZIAmnYQ&list=PLSNNzog5eydt_plAtt3k_LYuIXrAS4aDZ
OSI Model and related:
https://www.youtube.com/watch?v=nFnLPGk8WjA&list=PLSNNzog5eydtQcezP4OrrLL5preHLLkGA

Видео Fiber optic cable: Multimode vs Single-mode канала Sunny Classroom