20.2.4 Check Your Understanding – Physical Layer Problems Answers

1. What is NOT considered a physical layer problem?

  • device power turned off or unplugged
  • loose or incorrect cable
  • wireless configuration
  • faulty network cable
  • faulty wireless access point

Explanation: The wireless configuration is typically done in software, which is not a physical layer problem.

2. Which senses typically alert technicians that components are overheating? (Choose three.)

  • sight
  • smell
  • taste
  • touch
  • hearing

Explanation: Smell, taste, and touch can alert troubleshooters to components which are overheating.

3. True or false? A LED light that is not lit on a port means there is no traffic.

  • true
  • false

Explanation: The correct answer it true. An LED light that is not lit can indicate several different issues. But on a port, it means there is no traffic.

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