Which of the following are the principle duties performed by the BIOS during POST (power-on-self-test)? Each correct answer represents a part of the solution.
Choose all that apply.
Click on the arrows to vote for the correct answer
A. B. C. D. E. F.a user interface for system's configuration.
It identifies, organizes, and selects boot devices.
It executes the bootstrap program.
Answer: F is incorrect.
The BIOS.
The principle duties performed by the BIOS during POST (power-on-self-test) are as follows: It verifies the integrity of the BIOS code itself.
It discovers size and verifies system memory.
It discovers, initializes, and catalogs all system hardware.
It delegates control to other BIOS if it is required.
It provides does not interrupt the execution of all running programs.
During the Power-On Self-Test (POST) process, the Basic Input/Output System (BIOS) performs various operations to ensure that the hardware components of a computer are functioning properly before the operating system is loaded.
The duties performed by the BIOS during the POST include the following:
A. Providing a user interface for system configuration is not a primary duty of the BIOS during the POST. However, some BIOS versions may offer this feature as an additional function.
B. Identifying, organizing, and selecting boot devices is a critical function of the BIOS during the POST. It determines which devices are bootable and in what order they should be checked to locate the operating system.
C. Delegating control to other BIOS is not a primary duty of the BIOS during the POST. However, some systems may have more than one BIOS, and one BIOS may delegate control to another in specific situations.
D. Discovering size and verifying system memory is a crucial function of the BIOS during the POST. It checks the memory chips, calculates the amount of memory installed, and confirms that there are no memory errors.
E. Verifying the integrity of the BIOS code itself is an important function of the BIOS during the POST. It checks that the BIOS code has not been altered, corrupted, or infected by malware.
F. Interrupting the execution of all running programs is not a primary duty of the BIOS during the POST. However, the BIOS may halt the system if it detects a critical error during the POST.
In conclusion, the correct duties performed by the BIOS during POST are B, D, and E.