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 3.1 Network Interfaces

As a network technician, you will frequently be involved with installing, configuring, and troubleshooting Ethernet network interfaces and transceivers. A network interface is the means by which a node is connected to the media and exchanges data with other network hosts. This involves both a physical connection to the network media and the use of a data link protocol such as Ethernet to perform addressing and framing. Understanding the properties of these components is essential for selecting appropriate products and configuring them correctly.

 

As you study this lesson, answer the following questions: 

  • What is the function of a transceiver? 
  • At which OSI layers do transceivers and network interfaces operate? 
  • What is Ethernet framing, and how are network interfaces uniquely addressed?
  • What is the purpose of the cyclic redundancy check (CRC)? 
  • What does the MAC address ff:ff:ff:ff:ff:ff indicate? 
  • What are the symptoms of transceiver issues?