Book 2 chapter 4

Question 1

What is the difference between Legacy BIOS and UEFI

Answer 1

Legacy BIOS: Older firmware with limited features, supporting drives up to 2 TB.

UEFI: Modern firmware with graphical interfaces, secure boot, and support for drives larger than 2 TB.

Question 2

What is the purpose of Secure Boot in UEFI?

Answer 2

To prevent unauthorized operating systems or software from loading during

Question 3

What are typical troubleshooting steps for a failed POST?

Answer 3

Check power supply and connections.

Listen for beep codes or diagnostic LEDs

Reseat RAM, GPU, or other components.

Question 4

What is the role of the CMOS battery on the motherboard?

Answer 4

t powers the CMOS chip to retain system settings like date, time, and hardware configuration.

Question 5

What is the difference between clearing CMOS and resetting BIOS?

Answer 5

Clearing CMOS removes stored settings, while resetting BIOS restores default firmware settings.