VLSM Subnetting - subnetting a subnet

VLSM subnetting – subnetting a subnet
In FLSM subnetting, all subnets are of equal size with an equal number of host IDs. In VLSM subnetting, different subnets can be of different sizes. This type of subnetting method is considered “subnetting a subnet”. VLSM subnetting makes more efficient use of a given ID range.
Today I will demonstrate in detail how VLSM subnetting works.

Here is the question.
The network consists of three local area networks: LAN 1, LAN 2, and LAN3. These three LANs are connected with three serial links: Link A, link B, and link C. With an ID range - 192.168.4.0/24, please design an IP plan for the network using VLSM.
Subnetting is simple
https://www.youtube.com/watch?v=ecCuyq-Wprc&t=2s
Class B ID subnetting
https://www.youtube.com/watch?v=wuIdYxaV46Y&t=234s
Subnetting a subnet
https://www.youtube.com/watch?v=aVTEZHC2wdA&t=3s

Subnetting Playlist - including all subnetting topics

https://www.youtube.com/watch?v=ecCuyq-Wprc&list=PLSNNzog5eydueOR_p6dezKr2tosjGvdNH

Видео VLSM Subnetting - subnetting a subnet канала Sunny Classroom