TCP/IP Model Explained: Layers and Protocols

Learn the fundamentals of network communications and protocols
Rating: 3.5 out of 5 (4 ratings)
581 students
English [Auto]
Learn the fundamentals of data communications
New TCP/IP network reference model
Network layers and protocols explained
Great for all networking certifications


  • None


There is no other topic that is synonymous with networking than the TCP/IP architecture model. It is the standard used to create all modern network infrastructure and global connectivity. TCP/IP model is the de facto standard that replaces older OSI reference model for all network connectivity today. The only difference is that TCP/IP model collapses upper layers into a single application layer.

In this course you will learn the fundamentals of network communications for all platforms including Cisco, Windows, Linux and cloud servers. Learn the different connection types, network addressing, services, communication protocols and PDU. TCP/IP is an architecture that is less rigid than the OSI model. Most applications today are web-based (HTTP) and deployed to public and private network domains. Any web browser on an endpoint can access web-based applications.

TCP/IP reference model replaces older OSI model.

  • Learn how data messages are sent across the internet

  • Learn the fundamentals of network communications 

  • Ethernet, ARP, Wireless, IP, TCP, UDP, DNS, HTTP

  • Linux, Windows, and Cisco IOS stack architecture

  • De facto standard that replaces older OSI model

TCP/IP architecture model is the current standard today for all network communications. In this course you will learn how network hardware, protocols and applications all work together to send data messages across the internet. Deepen your knowledge and understanding of networking and take your career to the next level with rarely available information.

You will learn how a network session is operational from the physical layer up to and including the application layer. There is an explanation of how applications and operating system plug-in to the communications stack as well. This is an essential course for network administrators, technical support, web/application developers and certification students.

Who this course is for:

  • Network administrators, data center analysts, and cloud engineers
  • Certification students (CCNA, CCNP, Network+)
  • Software developers
  • Anyone starting an I.T career

Course content

1 section8 lectures1h 31m total length
  • Layer 1: Physical Connection
  • Layer 2: Data Link Switching
  • Layer 3: Internet/Subnet Communications
  • Layer 4: TCP/UDP Transport
  • Layer 5: Network Applications
  • Data Encapsulation and Stripping
  • TCP/IP Stack Operation
  • Network Devices
  • Course Quiz
    10 questions


CiscoNet Academy
Shaun Hummel
  • 4.1 Instructor Rating
  • 1,056 Reviews
  • 12,913 Students
  • 10 Courses

Author of certification books, video courses and recipient of Cisco spotlight awards. 20+ years of experience with Fortune 100 companies, large data centers, certification training, and globally connected infrastructure. The step-by-step approach includes courses, study guide, lab training,  practice tests, and whiteboard tools. It is all designed to prepare you for passing CCNA/CCNP certification exams. Browse all networking and certification courses available to upgrade your skills today!