COMPUTER FUNDAMENTALS

INTRODUCTION TO COMPUTERS

COMPUTER SYSTEMS AND COMPONENTS

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
What happens to data on our Hard Disk Drive when we turn the power off?
A
All data is saved
B
All data is lost
C
All data is backed up to the Graphics Card
D
All data is encrypted
Explanation: 

Detailed explanation-1: -The data is stored on the hard drive magnetically, so it stays on the drive even after the power supply is turned off. The term “hard drive” is actually short for “hard disk drive.” The term “hard disk” refers to the actual disks inside the drive.

Detailed explanation-2: -Hard drives, unlike RAM, don’t need electricity to keep data once it’s been written. Because of this, a standard SATA drive can store and maintain your files for extremely long periods of time, even if it’s shelved in a closet away from a computer.

Detailed explanation-3: -That means data is retained in RAM as long as the computer is on, but it is lost when the computer is turned off. When the computer is rebooted, the OS and other files are reloaded into RAM, usually from an HDD or SSD.

Detailed explanation-4: -Instead, data is stored on a series of NAND chips, which can retain their charge without a power source. Hard disk drives (HDDs) store data on a series of spinning magnetic disks called platters. Hovering a few nanometres above the magnetic platters are the read/write heads, located on the tip of the actuator arm.

There is 1 question to complete.