Curriculum
Course: CompTIA-Network+ (includes Official Labs)
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Curriculum

CompTIA-Network+ (includes Official Labs)

Course Overview

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Module 1

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Module 2

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Module 3

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Module 4

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Module 5

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Module 6

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Module 7

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Text lesson

Lesson 6.1 Transport and Application Layer Protocols

You have seen how IP provides addressing and delivery at layer 3 of the OSI model. At layer 4, the TCP/IP protocol suite also defines how different applications on separate hosts establish connections and track communications. Understanding how application protocols use ports to establish connections is critical to being able to configure and support network services.

As you study this section, answer the following questions: 

  • What is the function of a Transport layer port?
  • What is the difference between connectionless and connection-oriented services? 
  • How does TCP differ from UDP? 
  • What tools can be used to investigate Transport layer connections?