CCNA Complete Course – Hour 1: Network Fundamentals & OSI Model Welcome to the CCNA 200-301 Complete Series! In this first hour, we’ll cover 20% of your CCNA exam with crystal-clear explanations and real-world examples. Whether you’re just starting in networking or preparing for your certification, this video will help you master the fundamentals and build a rock-solid foundation. What You’ll Learn in This Video: What is a Network? (RCSM principle: Resource Sharing, Communication, Storage, Management) Key Network Components – End Devices, Intermediary Devices & Media Client-Server vs Peer-to-Peer Architectures Types of Networks – PAN, LAN, WAN Network Topologies – Star, Bus, Ring, Mesh OSI Model Deep Dive – Layers 1 to 7 explained with mnemonics TCP/IP Model vs OSI Model Data Encapsulation & PDUs (Do Some People Forget Birthdays?) Real-World Scenarios: Web Browsing & Troubleshooting IPv4, IPv6, NAT, Wireless, Security, and much more! Why Watch? Covers 20% of the CCNA exam in just 1 hour Clear, structured, and beginner-friendly Packed with mnemonics, memory hacks & real-world analogies Practical troubleshooting techniques you can use instantly 🔔 Subscribe for the full CCNA Series: Switching, Routing, Subnetting, Security, Wireless, and advanced topics – all explained simply and effectively. Download Notes & Resources: Coming soon! Have questions? Drop them in the comments – we’ll reply or make a video on it. If you found this helpful, Like, Share, and Subscribe to stay updated on the complete CCNA journey! #CCNA #Networking #OSIModel #Cisco #NetworkingBasics #ITCertifications