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Networking Fundamentals

You're reading from   Networking Fundamentals Develop the networking skills required to pass the Microsoft MTA Networking Fundamentals Exam 98-366

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Product type Paperback
Published in Dec 2019
Publisher Packt
ISBN-13 9781838643508
Length 510 pages
Edition 1st Edition
Languages
Concepts
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Author (1):
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Gordon Davies Gordon Davies
Author Profile Icon Gordon Davies
Gordon Davies
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Table of Contents (23) Chapters Close

Preface 1. Section 1: Network Infrastructure
2. Differentiating between Internets, Intranets, and Extranets FREE CHAPTER 3. Understanding Local Area Networks 4. Understanding Wide Area Networks 5. Understanding Wireless Networking 6. Network Topologies - Mapping It All Out 7. Section 2: Network Hardware
8. Switches and Switching - Forwarding Traffic on a Local Network 9. Routers and Routing - Beyond a Single Network 10. Media Types - Connecting Everything Together 11. Section 3: Protocols and Services
12. Understanding the OSI Model 13. Understanding TCP/IP 14. Understanding IPv4 15. Understanding IPv6 16. Understanding Name Resolution 17. Network Services 18. Section 4: Mock Exams
19. Mock Exam 1
20. Mock Exam 2
21. Assessments 22. Other Books You May Enjoy

Overview of the TCP/IP layers

You will notice as you go through this chapter that the TCP/IP model has many similarities with the OSI model. They both take on a layered approach, with each layer talking to the adjacent layers and their respective layer on the destination device. Like the OSI model, the TCP/IP model is an open or non-proprietary standard, which means any manufacturer can use it. Although most networking courses place a heavy focus on the OSI model, most experts argue that the TCP/IP model is a truer reflection of how networking works:

Figure 10.1: The TCP/IP model

As shown in the preceding diagram, the TCP/IP model has only four layers compared to the seven layers of the OSI model. These layers are as follows:

  • Application layer
  • Transport layer
  • Internet layer
  • Network layer

We will discuss each of these layers in turn in the following sections, but I'm keen...

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