MCQ IN COMPUTER SCIENCE & ENGINEERING

COMPUTER SCIENCE AND ENGINEERING

SYSTEM SOFTWARE

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
What is the first thing that happens when a computer is switched on
A
Try and find and load the operating system
B
Instructions perform some basic hardware tests
C
Process of loading the operating system is called booting the computer
D
Computer looks for instructions to follow (on ROM)
Explanation: 

Detailed explanation-1: -The CPU starts and fetches instructions into RAM from the BIOS, which is stored in the ROM. The BIOS starts the monitor and keyboard, and does some basic checks to make sure the computer is working properly. For example, it will look for the RAM. The BIOS then starts the boot sequence.

Detailed explanation-2: -Booting happens when you start the computer. This happens when we turned ON the power or the computer restarts. The system BIOS (Basic Input/Output System) makes the peripheral devices active. Further, it requires that the boot device loads the operating system into the main memory.

Detailed explanation-3: -You’ve pressed the power button. Now, using its power supply, the computer begins to deliver power to its individual components – the hardware. This includes the CPU (central processing unit), hard disk drives and solid-state drives, graphics processors, and more.

There is 1 question to complete.