Computer Networks

📌 Overview

Computer Networks allow devices to communicate using protocols and structured data flow.

• IP Addressing (IPv4 / IPv6)
• Routing & Switching
• TCP/IP & OSI Models
• HTTP, DNS, FTP, DHCP
• Network Security
• Firewalls, VPNs, Load Balancers
• Packet Analysis

🧩 OSI Layers (7-Layer Model)

• 7️⃣ Application
• 6️⃣ Presentation
• 5️⃣ Session
• 4️⃣ Transport – TCP / UDP
• 3️⃣ Network – IP, Routing
• 2️⃣ Data Link – MAC, Switching
• 1️⃣ Physical – Signals & Media

🎥 Top CN YouTube Playlists

• CN Full Course – freeCodeCamp
• Gate Smashers CN
• Neso Academy CN
• Subnetting Explained
• DNS Explained

📚 Top Networking Books

• Tanenbaum – Computer Networks
• Stallings – Data Communications
• TCP/IP Illustrated

🟢 Free Certifications

• freeCodeCamp Networking
• Cisco NetAcad
• Cybrary Networking