What is the main function of POST (Power-On-Self Test)?
1
It performs diagnostic tests before booting the operating system.
2
It serves as a temporary storage area where information can be accessed and manipulated quickly in order to carry out complex tasks.
3
It provides battery backup when the electrical power fails or drops to an unacceptable voltage level.
4
It is the backbone that ties the computer’s components together at one spot and allows them to communicate.
5
It converts mains AC to low-voltage regulated DC power for the internal components of a computer.