Which four tasks are directly controlled by the OpenBoot firmware?

The OpenBoot firmware controls the operation of the system before the operating system is
loaded. Which four tasks are directly controlled by the OpenBoot firmware?

A.
provides a list of boot entries from which to choose

B.
allows hardware to identify itself and load its own plug-in device driver

C.
loads the boot loader from the configured boot device

D.
performs basic hardware testing

E.
Installs the console

F.
reads and executes the boot archive

G.
extract and executes the kernel image

Explanation:
OpenBoot firmware is executed immediately after you turn on your system. The
primary tasks of OpenBoot firmware are to:
* Test and initialize the system hardware (D)
* Determine the hardware configuration (D)
*Boot the operating system from either a mass storage device or from a network
*Provide interactive debugging facilities for testing hardware and software
Some notable features of OpenBoot firmware.
* Plug-in Device Drivers (B)
Most common tasks that you perform using OpenBoot
* Booting Your System
The most important function of OpenBoot firmware is to boot the system.
Note: If auto-boot? is true, the system will boot from either the default boot device
or from the diagnostic boot device depending on whether OpenBoot is in
diagnostic mode. (C)
Reference: OpenBoot 4.x Command Reference Manual