MCQ IN COMPUTER SCIENCE & ENGINEERING

Detailed explanation-1: -BIOS (basic input/output system) are the program a computer’s microprocessor uses to start the computer system after it is powered on.

Detailed explanation-2: -The BIOS. When an x86 computer is booted, the processor looks at the end of system memory for the Basic Input/Output System or BIOS program and runs it. The BIOS controls not only the first step of the boot process, but also provides the lowest level interface to peripheral devices.

Detailed explanation-3: -BIOS identifies, configures, tests and connects computer hardware to the OS immediately after a computer is turned on. The combination of these steps is called the boot process. These tasks are each carried out by BIOS’ four main functions: Power-on self-test (POST).

Detailed explanation-4: -The boot process is controlled by the computer’s BIOS (basic input output system)which usually starts in Read Only Memory ROM. The bootstrap loader from ROM then loads the operating system.

Detailed explanation-5: -Booting is basically the process of starting the computer. When the CPU is first switched on it has nothing inside the Memory. In order to start the Computer, load the Operating System into the Main Memory and then Computer is ready to take commands from the User.