CCNA Study Guide – Full Repo

Welcome to your CCNA Study Guide Repository.
This repo is designed as a structured, exam-focused knowledge base plus hands-on labs.

It’s organized around key CCNA topics, with deep dives on:

• NAT (Static, Dynamic, PAT, Port Forwarding)
• L2 Security (DHCP Snooping, Dynamic ARP Inspection, STP protections)
• WAN & VPNs (Fiber, SONET/SDH, DWDM, PPP, PPPoE, Internet connectivity models, MPLS VPNs)
• Converged Networks & QoS (policy, mechanisms, DiffServ, deployment)
• Modern topics: AI, ML, RAG, Cisco AIOps
• Labs (starting with NTP time sync)

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Repository Structure

• 01-Network-Fundamentals/ – High-level L1/L2/L3 concepts, TCP/IP basics, models
• 02-Network-Access/ – Switches, VLANs, trunks, STP basics
• 03-IP-Addressing-and-NAT/ – IPv4, subnetting, and all NAT flavors
• 04-L2-Security-DHCP-ARP-STP/ – DHCP Snooping, Dynamic ARP Inspection, STP attack mitigation
• 05-WAN-and-VPNs/ – Optical fiber, SONET/SDH, DWDM, PPP, PPPoE, WAN redundancy, VPNs, MPLS
• 06-Converged-Networks-and-QoS/ – Converged traffic (voice/video/data) and QoS end-to-end
• 07-AI-ML-and-RAG/ – Neural networks, LLMs, RAG, and AI/ML in network operations
• 08-Labs-and-Config-Workbooks/ – Step-by-step config labs (NTP, etc.)

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How to Use This Repo

• Use it as a study hub for CCNA concepts.
• Treat each .md file like a mini-chapter.
• Open issues or add notes in your own fork to track weak areas.
• Add configs, packet tracer files, and screenshots as you lab.

You got this. 🚀