Disc is divided into several concentric circles called _______.

Explanation

A Disk is usually divided into TRACKS, CYLINDERS, and SECTORS Platter A round magnetic plate that constitutes part of a Hard disk. Hard drives can contain a dozen platters mounted on the same spindle. Platters require two read/write heads, one for each side, and therefore can store information on both sides. Tracks The data is stored on concentric circles on the surfaces known as tracks. Therefore, the Answer is Tracks Corresponding tracks on all platter surfaces make up a cylinder Numbering starts at 0 at the outermost cylinder Sector A sector is a continuous linear stream of magnetized bits occupying a curved section of a track. Sectors are the smallest physical storage units on a disk- Each sector stores 512 bytes of data Cluster The smallest pieces of storage that an OS can place into data. The bytes in a cluster varies according to the size of the drive and the version of the OS. Transfer rate : This is the rate at which the data moves from disk to the computer. Random access time: It is the sum of the seek time and rotational latency. Seek time is the time taken by the arm to move to the required track. Rotational latency is defined as the time taken by the arm to reach the required sector in the track.