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.

A.
It provides a user interface for system’s configuration.

B.
It identifies, organizes, and selects boot devices.

C.
It delegates control to other BIOS, if it is required.

D.
It discovers size and verifies system memory.

E.
It verifies the integrity of the BIOS code itself.

F.
It interrupts the execution of all running programs.

Explanation:
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 a user interface for system’s configuration. It identifies, organizes,
does not interrupt the execution of all running programs.