What Is TCP IP Model?
Gain a clear understanding of the TCP/IP model, the foundation of modern network communication. Learn how the protocol suite works, how it differs from the OSI model, and why mastering these concepts is essential for IT professionals and certification exams.

What Youβll Learn
This What Is TCP IP Model? will teach you:
- TCP/IP Model Fundamentals: Understand the four-layer TCP/IP architecture and its role in transmitting data.
- Network Access Layer: Study how this layer manages data link protocols and physical connectivity.
- Old vs. New TCP/IP Models: Learn the differences between the traditional model and the updated version used in Cisco training.
- Internet Protocol: Explore how IP addresses and routing deliver packets across networks.
- Transmission Control Protocol: Learn how TCP enables reliable communication between systems.
- User Datagram Protocol: Compare connectionless UDP with TCP for faster transfers.
- IP Addressing: Understand network addressing concepts, private IP ranges, and hierarchical schemes.
Included in the TCP IP Model
Suitable for the Following Careers
Course Content
Introduction
The TCP/IP Suite Section
Introduction to IP Addressing
Introduction to Network Addressing
Summary of Course
OPEN FULL CURRICULUM
Requirements
Description of What Is TCP IP Model? Training
This course provides a clear introduction to the TCP/IP model and protocols that power modern network communication. Youβll learn how data packets move through the layers of the protocol suite and how Transmission Control Protocol and User Datagram Protocol differ in their approach to moving information.
Through concise explanations, youβll see how the network access layer handles the data link and physical connections that enable communication between devices. Youβll also review how addressing schemes and protocol layers work together to support reliable data transmission.
By the end of this course, you will:
- Grasp the core functions of each TCP/IP layer
- Identify key differences between the TCP/IP and OSI models
- Understand the old vs. new TCP/IP models required for Cisco exams
- Recognize major protocols within the suite and their functions
- Build confidence in applying these concepts to real-world networking
Mastering TCP/IP is a crucial step toward strengthening your knowledge in networking, cybersecurity, and systems administration.
Who Is This Course For
This course is perfect for IT professionals seeking deeper knowledge of TCP/IP, students studying computer networks, and anyone preparing for certifications that require understanding of core networking protocols and concepts.
Course Instructor
Lazaro Diaz is a network engineer with extensive experience in the field and teaching. He holds certifications including CCNA, CCNA Security, CCNA Voice, CCNP, Security+, Network+, A+, MCP, MCTS, and MOS, and has passed the first CCIE exam. Lazaro has taught at institutions like Palm Beach Community College and New Horizons and provided private consulting.
Known for his unconventional and engaging teaching style, Lazaro has taught over 100,000 students worldwide through e-learning platforms and corporate training. His clients include MetroPCS (now T-Mobile), The Florida Marlins, and The Assurant Group.
Lazaro also teaches applications like Word, Excel, PowerPoint, and Access, including MOS certification. He focuses on simplifying complex topics and preparing students for certification exams and real-world job interviews. His interactive and dynamic classes make learning fun and practical, ensuring students are well-prepared for the job market.
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Testimonials
Nicholas R.
Iβm only a third of the way through this course, but I have to say how much I appreciate the way Lazaro explains everything about TCP/IP, the doβs and donβts, and how clearly he covers topics like the network interface layer, data packets, and the application layer.
Update: Iβve completed the course now, and it was fantasticβextremely informative, well organized, and packed with insights into protocols like file transfer protocol and internet control message protocol.
Gerardo T.
Instructor is energetic and takes his time to explain concepts with real-life examples. Good introductory material that shows how to transfer data securely over different network media, use tcp protocol, and understand network applications and security protocols to encrypt data across any network channel.
Nicholas P.
Laz is always an amazing instructor. Easy to listen to, with good pacing and communication skills. He makes the information easy to digest and not boring, especially when covering communication protocols, error detection, the seven layers of networking, and how the domain name system and routing data work in real scenarios.
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