Operating Systems Lecture 5 Quiz

Questions and Answers

What is the basic structure of a magnetic disk?

One or more platters covered with magnetic media, divided into tracks and sectors (correct)

A collection of read-write heads used to access data on the disk

Several working surfaces divided into tracks, spots, and sectors

A single platter made of rigid metal, divided into concentric rings called cylinders

What is the function of read-write heads in a hard drive?

To read and write data on the disk (correct)

To access data from the edge of the platter

To divide the platters into concentric rings called cylinders

To store data in the form of tracks, spots, and sectors

What does a track on a magnetic disk contain?

Read-write heads for accessing data

Sectors, traditionally containing 512 bytes of data each (correct)

Concentric rings called cylinders

A collection of all tracks that are the same distance from the edge of the platter

What is the primary purpose of magnetic disks?

<p>To use a magnetization process to write, rewrite, and access data</p> Signup and view all the answers

What is the purpose of dividing the working surfaces into concentric rings called tracks?

<p>To organize the storage of data on the platters</p> Signup and view all the answers

Study Notes

Magnetic Disks

A magnetic disk consists of a rotating disk with a magnetic coating, read-write heads, and a motor to rotate the disk.
The basic structure includes a central spindle, a motor to rotate the disk, and read-write heads that float above the disk.

Read-Write Heads

Read-write heads are small electromagnets that float above the magnetic disk to read and write data.
They convert digital data into magnetic fields and vice versa.

Tracks on Magnetic Disks

A track on a magnetic disk is a concentric ring that contains a sequence of sectors.
Each sector typically holds 512 bytes of data.

Purpose of Magnetic Disks

The primary purpose of magnetic disks is to store and retrieve data.
They provide non-volatile storage, meaning data is retained even when power is off.

Tracks and Sectors

Dividing the working surfaces into concentric rings called tracks allows for efficient data storage and retrieval.
Tracks are further divided into sectors, enabling precise location and retrieval of data.

Description

Test your knowledge of mass storage, disk partitioning, disk scheduling, file and directory concepts, and data center disk technologies in Operating Systems. This quiz covers topics like magnetic disk structure, mobile data erasure, disk allocation methods, and various disk technologies.