Focus Questions Exercise Chapter 4 Name:

Date: Class:

Cisco Exercises - Semester 1 - Networking Fundamentals

Chapter 4 Electronics and Signals

1. What are some examples of electrical insulators?

2. What are some examples of electrical conductors?

3. What are some examples of semiconductors?

4. What is silicon made of and is it an insulator, conductor or semiconductor?

5. Do semiconductors allow the amount of electricity to be controlled?

6. When does Voltage occur?

7. What is it called when static, or resting, electrons move and a flow of charges is created?

8. What is the abbreviation for amps?

9. What is the abbreviation for resistance?

10. What is the difference between AC and DC?

11. How do you measure impedance and what is its abbreviation?

12. What three components are necessary to make up a circuit and how do they allow the control of current?

13. What equipment do you use to graph electrical waves, pulses, and patterns?

14. What are some of the characteristics of an analog signal?

15. What is the basic building block of information on a data network?

16. What are the five sources of noise that can affect a bit on a wire?

17. At what speed do modem networks typically work?

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