TCPIP Model Explained Cisco CCNA 200301

>> YOUR LINK HERE: ___ http://youtube.com/watch?v=OTwp3xtd4dg

Join the Discord Server! • / discord • --------------------- • MY FULL CCNA COURSE • 📹 CCNA - https://certbros.teachable.com/p/cisc... • FREE CCNA FLASHCARDS • 🃏 CCNA Flashcards - https://certbros.com/ccna/flashcards • HOW TO PASS THE CCNA • 📚 Get a great book - https://amzn.to/3f16QA5 • 📹 Take a video course - https://certbros.teachable.com/p/cisc... • ✔ Use practice exams - https://www.certbros.com/ccna/Exsim • SOCIAL • 🐦 Twitter - / certbros • 📸 Instagram - / certbros • 👔 LinkedIn - / certbros • 💬 Discord - https://www.certbros.com/discord • Disclaimer: These are affiliate links. If you purchase using these links, I'll receive a small commission at no extra charge to you. • --------------------------------------------------------------------------------------------------------------- • What is the TCP/IP model? It's a model to standardise computer networking. • The OSI model, while widely referenced isn't used in the real world. The TCP/IP model, however, is the real deal. Thankfully, it's not all that different. • Here is the original TCP/IP model. • Application, Transport, Internet, and Link. • Just like the OSI model, it's numbered from the bottom up but the direction depends if you're sending or receiving traffic. • So this is the original TCP/IP model, but, it has been updated. • The link-layer has been split into Data Link and Physical • and the Internet Layer has been renamed the Network layer. • Layer 5: Application protocols such as HTTP, FTP, and SMTP • Layer 4: The two most common transport protocols are TCP and UDP. • Port numbers are also added here. • Layer 3: At the Network layer, we have the Internet Protocol or IP. • Routers also commonly operate at this layer • Layer 2: The data link layer contains Ethernet related protocols. • Switches usually operate at this layer. Although you can get layer 3 switches that have routing capabilities • Layer 1: Think of everything you can touch and feel here. • Things like cables, hubs and Network interface cards. • #ccna #cisco #networking

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