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.
Suggested Answer: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.
The correct answer is BDE.
B. It identifies, organizes, and selects boot devices.
D. It discovers size and verifies system memory.
E. It verifies the integrity of the BIOS code itself.
The Option A is incorrect because the user interface can be accessed outside of Post as well to configure systems like accessing hardware resources from system settings or modifying boot order which happens after POST activities complete.
The Option C is incorrect because because during POST operations control is not handed over to other bios because it does necessary functions that must be completed before handover to other processes.
The Option F is incorrect because Interrupts occur at different stages based on execution priority assigned with respect to running programs within a process or application in software engineering principles whereas POST's main objective includes firmware check covering different aspects so interruption of normal functioning isn't needed for its completion.
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5 months, 2 weeks ago