✍️🛡️ Day 1 – OSI Model + Ping Simulation

Laying the Foundation: Exploring the OSI Model and Simulating Ping Requests in Cisco Packet Tracer

🧭 Introduction: Why I Started This Journey

Added 2 PCs and 1 switch to the workspace

🧠 Concept Breakdown: The OSI Model in My Words

OSI (Open Systems Interconnection) Model explains how data travels across networks by dividing the process into 7 layers:

  1. Application – User-facing software (e.g., browser, email client)
  2. Presentation – Formats and encrypts data
  3. Session – Manages conversations between systems
  4. Transport – Handles reliable data delivery (TCP/UDP)
  5. Network – Routing and IP addressing (Layer 3)
  6. Data Link – MAC addresses, switches (Layer 2)
  7. Physical – Cables, bits, and signals

🧪 Lab Practice: Ping Simulation

⚙️ Tools Used