What is OSI Layer 4 & Ping Explained | CCNA Mock Interview Questions! #ccna #networking #layer

Part 1 ~ The Best OSI Model Explanation You ll Ever Find In this video, we'll break down the OSI Model in the simplest way possible by following a real YouTube request from your computer to YouTube's servers and back. You'll learn how all 7 layers work together, including DNS, TCP vs UDP, IP routing, MAC addresses, encryption, and how data travels across the internet. Whether you're a beginner in networking, preparing for interviews, or learning cloud computing, this video will help you understa

What is a Phishing Attack? | Every IT Professional Must Know! #networksecurity #cybersecurity #ccna