5987275
Description
Flashcards by Shahmeran Gilani, updated more than 1 year ago
|
Created by Shahmeran Gilani
over 7 years ago
|
|
| Question | Answer |
| What does BIOS stand for | Basic Input Output System |
| What does a Bios contain on a PC | All the code required to control keyboard, display screen, dis drives, serial communications and other limited functions |
| Where is the bios located? | Typically on a ROM chip or flash memory |
| Why is the Bios not located on a hard disk | To ensure that BIOS is always available in the event of a disk failure |
| What is shadowing ? | Shadowing occurs when the BIOS is copied from the ROM to the RAM each time the computer is booted. This is because RAM is faster than ROM |
| What is POST? | POST refers to Power On Self Test Its a set of instructions on the BIOS to test your hardware ***Runs until a bootable partition is found and then the partition takes over |
| When does POST end and what occurs after it? | Power on Self Test ends when Bios detects a valid system disk, reads the master boot record (MBR) and starts Bootmgr.exe |
| Where is the BIOS settings stored? | Bios settings are stored on a volitile RAM chip called the CMOS which stands for Complementary Metal Oxide Semiconductor |
| When should the BIOS settings be changed? | 1) Re-installing OS 2) Adding a new hard drive 3) Enabling support for Virtualization (VMWare) 3) Changing a motherboard component like CPU |
| What are the 3 biggest issues with BIOS settings? | 1) Non Standardization 2) Bios settings dependent on motherboard chipset and integrated components 3) unique settings to BIOS manufacturer 4) Methods to access BIOS are not standardized |
| How can you tell your Bios battery is dead? | The date/time settings do not save! |
| What is the name of a BIOS that is given to it during its manufacture? | Revision level 0.1 |
| What does UEFI stand for? | UEFI stands for Unified Extensible Firmware Interface |
| What are the two type of EFI (Extensible Firmware Interface) services provided? | EFI contains two services: 1) Boot services * available while firmware is in control and not the OS. *Includes text and graphical console 2) Runtime services * such as date/time and NVRAM access |
| What are the main Advantages to using UEFI? | 1) Ability to boot from disks over 2TB with GUID Partition table | GPTCPU-independent architecture 2) Have CPU- independant drivers 3) Flexible pre-OS environment which has network capability 4) Modular design with a Graphical User Interface (GUI) 5) 64-bit UEFI which can access all RAM vs 1 MB 6) Supports backwards compatabilty with previous and older BIOS settings |
| What is the use of a Boot Manager? | Boot manager is used to boot more than one operating system on a single computer (Virtualization is a much better choice than this though!) Also allows to create and configure a boot menu Allows default options like a default boot unless a key is pressed |
| What does MBR stand for? | It stands for Master Boot Record |
| When does the POST process end? | POST ends when BIOS detects a valid system disk and reads the master boot record (MBR) and starts Bootmgr.exe |
| What occurs after the BIOS reads the master boot record and starts Bootmgr.exe? | 1) Bootmgr.exe starts WinLoad.exe on Windows boot partition ==> OSLoader phase begins 2)Winload.exe loads essential systems drivers (used to read min data from disk) ==> Windows kernel begins execution 3) Windows Kernel begins execution --> Loads system registry hive and additional drivers (marked as BOOT_START ) into memory |
| What is the comparison between Master Boot Record (MBR) and Globally unique identifier (GUID) |
Want to create your own Flashcards for free with GoConqr? Learn more.