Storage

Question 1

Computer storage is divided into

Answer 1

primary, secondary (and offline)

Question 2

primary storage

Answer 2

directly accessed by the CPU

Question 3

types of primary storage

Answer 3

RAM, ROM, cache, and registers

Question 3

types of primary storage

Answer 3

RAM, ROM, cache, and registers

Question 4

random access memory

Answer 4

used for temporary storage of programs and data currently in used

Question 5

ram is

Answer 5

volatile - loses content when turned off

Question 6

read only memory

Answer 6

contains data that can be read but not altered or deleted

Question 7

rom is

Answer 7

non-volatile - retains data even with no power

Question 8

secondary storage

Answer 8

External storage devices that are not directly accessed by the CPU

Question 9

secondary storage includes

Answer 9

SSD and HDD

Question 10

examples of secondary storage

Answer 10

hard disk, dvd, blu-ray, flash drive

Question 11

secondary storage is

Answer 11

non-volatile

Question 12

advantage of secondary storage

Answer 12

• ideal for permanently storing data
• has more capacity

Question 13

hard disk drives

Answer 13

Operates on magnetic storage principles

Is cost efficient

Has a high storage capacity

Used in computers, laptops, webservers, backup systems for large facilities.

In computers, stores the OS, installed programs and user’s data.

Is read/written using magnetism

Made of a magnetic surface called a platter

The platter is divided into various sectors and tracks that can store a specific number of bytes

Question 14

solid state drives

Answer 14

Operates on electronic (solid state) principles.

Used in USBs, tablets, and mobile phones.

Question 15

types of secondary storage

Answer 15

magnetic, optical, solid-state

Question 16

examples of magnetic

Answer 16

tape, hard-drive, floppy disk

Question 17

examples of optical

Answer 17

cd, dvd, blu-ray

Question 18

examples of solid-state

Answer 18

pen drive, flash memory

Question 19

magnetic

Answer 19

• store data by applying magnetic charge to a magnetised material
• uses platters which are divided
  into tracks and sectors. Data is read and written using electromagnets

Question 20

advantages of magnetic

Answer 20

cheap, fast, hold lots of data

Question 21

optical

Answer 21

• use light to read and write data. on the disk surface, there are land and pits (highs and lows) that reflect and scatter light
• uses lasers to create and read pits
  and lands

Question 22

features of optical

Answer 22

helpful in long term, low storage capacity, slow

Question 23

solid state

Answer 23

uses NAND or NOR technology. Transistors are used as control gates
and floating gates

Question 24

advantages of solid state

Answer 24

Portable, small

Durable, reliable as no moving parts