3.4 - BIOS Settings Flashcards
When you start your computer, what software begins the process of loading an operating system?
The BIOS (Basic Input Output System).
What is the BIOS also sometimes referred to as?
Firmware, system BIOS, ROM BIOS, or flash memory.
How does the BIOS initialize the system when powered on?
It initializes the memory and CPU, and begins executing its code.
What does the POST (Power On Self-Test) check for?
It checks for memory, CPU, video, and input devices like a keyboard or mouse.
What happens if the POST is successful?
The BIOS looks for the boot drive and a boot loader to start the operating system.
Where is the flash memory used by the BIOS usually located?
On the motherboard.
What feature allows BIOS upgrades with a fallback option?
Having both a main and backup BIOS configuration.
What is the legacy BIOS?
An older text-based BIOS used for about 25 years.
What does the UEFI BIOS stand for?
Unified Extensible Firmware Interface.
How does UEFI BIOS differ from legacy BIOS?
UEFI is a standard form used across multiple manufacturers, designed to replace legacy BIOS.
What categories are typically available in a UEFI BIOS?
Main, security, advanced, and UEFI drivers.
How can you access the BIOS configuration during startup?
By pressing the key associated with BIOS setup, often Delete or a function key.
How can you access BIOS in virtualization software?
Using Hyper-V or VMware Workstation player, but not with VirtualBox.
What issue might you encounter with BIOS access in Windows 8 or later?
Fast startup prevents access by hibernating the system instead of fully shutting down.
How can you bypass fast startup to access BIOS?
Hold down Shift and click Restart, or disable fast startup from Settings.
What is one method to reset the BIOS if you can’t access the desktop?
Interrupt the boot process three times to disable fast startup.
Why is it important to back up BIOS settings before making changes?
To avoid boot failures or system issues caused by incorrect changes.
What are some ways to back up BIOS settings?
Download the configuration if available, make notes, or take a picture of the screen.
What can be controlled through the BIOS regarding hardware?
Disabling hardware, configuring boot order, and managing fan settings.
What is an example of a setting that can be adjusted in the BIOS for boot order?
Setting the BIOS to boot from a USB drive first, then an SSD, and lastly a hard drive.
How can you manage USB access through the BIOS?
Disable USB ports to prevent unauthorized data transfer or system access.
What significant event in 2008 involved USB and the Department of Defense?
A worm was spread via a USB drive, leading to a ban on USB storage devices.
What is a TPM and its primary purpose?
Trusted Platform Module, used for cryptographic functions and securing data.
How is secure boot used in the BIOS?
It verifies the digital signature of the bootloader to prevent unauthorized modifications.
What must an operating system have to use secure boot?
A digital signature that matches the public key stored in the BIOS.
How can you modify TPM settings in the BIOS?
Enable or disable TPM features.
What is an HSM and its use?
Hardware Security Module, used for managing cryptographic keys and accelerating cryptographic functions.
How can HSMs be implemented?
As standalone devices, adapter cards, or lightweight forms like smart cards or USB drives.
