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

CompTIA-Network+ (includes Official Labs)

Module 2

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Module 4

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Module 5

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Text lesson

Lesson 3.4 Switch Troubleshooting

Ethernet switches and network adapters introduce the potential for issues at the Data Link layer and can reveal subtle cabling problems and interference at the Physical layer. Diagnosing and resolving problems gets more complex as you work up through the network stack. You need to assimilate your knowledge of both cabling types and Ethernet framing with awareness of status indicators and commands for network equipment to resolve these issues.

 

As you study this lesson, answer the following questions: 

  • How can you use the physical and logical topology to isolate a problem to a particular area of the network?
  • What information can you obtain from network device status lights?
  • Given symptoms of a particular problem, what commands should you use to gather information about an Ethernet switch’s configuration?
  • What are the symptoms and causes of a network loop?