Data Link - Layer 2 Explained (2026) – Frames, MAC Addresses & Switching скачать в хорошем качестве

Data Link - Layer 2 Explained (2026) – Frames, MAC Addresses & Switching

Welcome back to NetWorks! In this video, we take a deep dive into Layer 2 of the OSI Model — the Data Link Layer, where local network communication actually happens. Layer 2 is responsible for frames, MAC addresses, and switching, and it plays a critical role in how devices communicate inside the same network before any routing or internet traffic begins. This video is designed for networking beginners, CCNA students, and anyone who wants a clear, simple explanation of how Layer 2 works in real networks. In this video, you’ll learn: • What Layer 2 (the Data Link Layer) is responsible for • What frames are and how they carry data • How MAC addresses identify devices on a local network • How switches learn MAC addresses and forward frames • The difference between unicast, broadcast, and multicast at Layer 2 • How Layer 2 works together with ARP • Why Layer 2 communication is limited to the local network Understanding Layer 2 is essential before moving on to Layer 3 (IP addressing and routing), VLANs, and troubleshooting real-world LAN issues. 📘 Previous Videos in the Series: • OSI Model Explained (2026) – The 7 Layers of Networking Simplified • ARP & The Default Gateway (2026) 📘 Next Video: Layer 3 Explained (2026) – IP Addresses, Packets & Routing Basics 👍 If this video helped, please like and subscribe 🔔 New networking videos every week on NetWorks #Layer2 #NetworkingBasics #CCNA #Switching #MACAddresses #OSIModel #ComputerNetworking #NetWorks2026