This video explains CIDR notation for classless addressing using a suitable numerical.
More videos on networking ----
Computer Networks | Internet Protocol | Datagram Format
https://www.youtube.com/watch?v=I6tnLJqO01Y&list=PLupEg_4X8NV3cGPepFKQGvtO4soN8OpDi&index=2&t=361s
Computer Networking | Flow Control | Stop and Wait | Efficiency
https://www.youtube.com/watch?v=yvkgofuq1JY&list=PLupEg_4X8NV3cGPepFKQGvtO4soN8OpDi&index=2
Computer Networking | Numerical | MCQs
https://www.youtube.com/watch?v=79QRw7mHIlE&list=PLupEg_4X8NV3cGPepFKQGvtO4soN8OpDi&index=3
Computer Networking | Stop and Wait Protocol Numerical
https://www.youtube.com/watch?v=s34EIcrVY5E&list=PLupEg_4X8NV3cGPepFKQGvtO4soN8OpDi&index=4
Computer Networking | IP Addressing | First Address
https://www.youtube.com/watch?v=_UZIFBGKdVA&list=PLupEg_4X8NV3cGPepFKQGvtO4soN8OpDi&index=5
Check out my channel at ---
https://www.youtube.com/channel/UCfQ2cyXbRMwOYQq_4uxccLg