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Network Fundamentals Explained: OSI Model, Subnetting, and More

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Source: Crosstalk Solutions
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  • title: Network Fundamentals Explained: OSI Model, Subnetting, and More
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  • description: This is a free module from the UniFi Network Masterclass where David Barger and I walk through essential networking fundamentals. We cover the OSI model, the difference between LAN and WAN, layer 2 and layer 3 switching, MAC addresses, subnetting, CIDR notation, DHCP, DNS, and all the foundational concepts you need to understand before deploying a UniFi network. This is nearly 20 minutes of deep dive content that will help you build better networks. If you want the full course with 13 modules and nearly four hours of training, head over to masterclass.crosstalksolutions.com. UniFi Network Masterclass: https://masterclass.crosstalksolutions.com Chapters: 0:00 Course Introduction 2:31 OSI Model Explained 5:23 Layer 2 and MAC Addresses 8:41 Frames and Data Encapsulation 9:33 Layer 3 and IP Addressing 11:02 Subnets and CIDR Notation 12:19 David C Subnet Calculator Demo 16:01 RFC 1918 Private Address Ranges 18:14 DHCP and DNS Explained #networking #unifi #networkingtutorial #subnetting #OSImodel #networksecurity #homelab #networkengineer #IT #techtraining ------------------------- Buy me a coffee! https://ko-fi.com/crosstalk Crosstalk Discord: https://discord.gg/crosstalksolutions Follow me on: - TikTok: https://www.tiktok.com/@crosstalksolutions - LinkedIn: https://goo.gl/j2Ucgg - Bluesky: https://bsky.app/profile/crosstalk.bsky.social - Mastodon: @chris@crosstalk.tech - Facebook: https://fb.me/crosstalksolutions - Instagram: https://instagram.com/crosstalksolutions Crosstalk Solutions - RECOMMENDED PRODUCTS: https://crosstalksolutions.com/products Crosstalk Solutions offers best practice phone systems and network/wireless infrastructure design/deployment. Visit https://www.CrosstalkSolutions.com for more info!
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  • uploaded_at: 2026-03-27T15:51:39Z
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