MCQ IN COMPUTER SCIENCE & ENGINEERING

Detailed explanation-1: -A hard disk is a thick magnetic disk encased in a thicker protective shell. A hard disk consists of several aluminum platters, each of which requires a read/write head for each side.

Detailed explanation-2: -Hard disk drives (HDD) are thick magnetic disks made of aluminum platters, They use read/write heads to access data stored on the platters. They have up to several TB in storage capacity and their cost per MB is cheap.

Detailed explanation-3: -A disk read-and-write head is the small part of a disk drive which moves above the disk platter and transforms the platter’s magnetic field into electrical current (reads the disk) or, vice versa, transforms electrical current into magnetic field (writes the disk).

Detailed explanation-4: -A hard disk is the primary computer storage medium, which is made of one or more aluminum or glass platters, coated with a ferromagnetic material.

Detailed explanation-5: -hard disk, also called hard disk drive or hard drive, magnetic storage medium for a computer. Hard disks are flat circular plates made of aluminum or glass and coated with a magnetic material. Hard disks for personal computers can store terabytes (trillions of bytes) of information.