Infotech Lesson 2

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2.1
1. What are the functions of the BIOS?
- Makes other components to communicate with each other.
- Contains programs
- Can’t be written
2. What is the role of CMOS? How does it differ from BIOS?
- Contains parameters
- CMOS can be written when BIOS cannot be written.
3. Why does the CMOS require a battery?
- Because it loses its contents when the power goes off.
4. What determines the keystroke to open a CMOS editor? How can you find this information? - Depends on the/ Documentation, online
5. What might you need to update the BIOS?
- You might need to update the BIOS if your computer is working slowly and something seems wrong and slow.

6. How can you recover if updating the BIOS fails?
- You could install a replacement BIOS chip if the BIOS is located in a socketed chip, or you could also use the BIOS recovery feature.

2.2
1. What units are used to measure the amount of power required by a computer system? * Kilowatts
2. How do you determine what size of power supply is required for a specified computer? * Use the voltmeter to check the Molex connector’s voltage. 3. Why is it important to read the documentation when connecting power and case cables? * Because it prevents ESD.

4. How do power supplies address heat control?
* Fans on the side control the heat.
5. What is soft power?
* Power that is really weak/ low voltage
6. What are common symptoms of power supply problems?
* System won’t boot, spontaneous rebooting, system shuts down. 7. Why shouldn’t you attempt to open or repair a failed power supply? * It might shock you
8. What is the difference between a brownout and blackout? * Blackout is a complete loss of power and brownout is a small voltage of power supplying the equipment. 9. How does a UPS differ from a surge protector?

* Surge protector only protects what are connected to the power spike, but a UPS supplies a little power that enables you to properly shut...
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