How networks work: IP addressing, subnets, DNS, routing, TCP/UDP and the cloud networking built on them.
Videos by ExamPro · 1.3K views on this playlist

ExamPro's Networking Fundamentals Bootcamp: the OSI and TCP/IP models, IP addressing and subnetting, DNS, routing and switching, NAT, VPNs and firewalls, and how the same ideas appear in cloud VPCs.
Every lesson plays the original video from ExamPro with YouTube's own player, so views and credit stay with the creator. We picked this playlist because it's complete, in order, and recently updated. SkillSpring adds progress tracking, notes, bookmarks and focus mode around it.
Playlist: “Networking Fundamentals Bootcamp” · 37 videos · last updated Apr 2026. Open on YouTube