spanning tree protocol ccna

📅 Day 16 – Understanding Ports & Protocols 🏷️ Topic: Ports & Protocols 🔍 Key Concept: Port Numbers & Services (HTTP, FTP, DNS) ✍️ Caption: “Ports are doors. Protocols are the rules to knock.” ⸻ 🚪 Ports & Protocols — Digital Doorways with Rules Imagine visiting a military base. You can’t just walk in — […]