Memory, Storage Devices and Media

Question 1

List the three types of storages

Answer 1

1) Primary
2) Secondary
3) Off-line

Question 2

RAM - stand for?

Answer 2

Random access memory

Question 3

ROM - stand for?

Answer 3

Read only memory

Question 4

Embedded computer

Answer 4

A computer that is build into a device and performs one or more specialised tasks

Question 5

General purpose computer

Answer 5

A computer used for many different purposes

Question 6

RAM

Answer 6

Primary storage that holds data to be processed and programs which are currently in use

Question 7

Volatile

Answer 7

Data is erased when the computer turns off

Question 8

ROM

Answer 8

A primary storage device, which can be read from but not written to. Holds the firmware or the bootstrap information

Question 9

Firmware

Answer 9

ROM that hold programs that run on an embedded computer

Question 10

Bootstrap

Answer 10

ROM that contains start-up instructions for the computer

Question 11

EPROM - stand for?

Answer 11

Erasable Programmable Read Only Memory

Question 12

EPROM

Answer 12

ROM that can be erased and re-written

Question 13

Flashing

Answer 13

The process of erasing and re-writting data to ROM

Question 14

Which type of memory is volatile?

Answer 14

RAM

Question 15

Which memory has a bigger storage space on PC?

Answer 15

Secondary

Question 16

What is secondary storage used for?

Answer 16

Store programs and data for future use

Question 17

Primary/Secondary - directly accessible by the processor

Answer 17

Primary storage

Question 18

Primary/Secondary - Permanently stores data until erased

Answer 18

Secondary storage

Question 19

Primary/Secondary - Slower to read/write data needs to be transferred to RAM first

Answer 19

Secondary storage

Question 20

Primary/Secondary - Normally a few gigabytes in capacity

Answer 20

Primary storage

Question 21

Primary/Secondary - Some devices are removable

Answer 21

Secondary storage

Question 22

List 3 types of secondary storage

Answer 22

1) Magnetic tape
2) Optical storage
3) Solid state storage

Question 23

Magnetic tape

Answer 23

Stores data by using electromagnetic and magnetic fields to control tiny magnetic dots of data represented in binary

Question 24

What are magnetic tapes used for?

Answer 24

Archiving

Question 25

Describe the cost and the capacity of magnetic tape compared HDD

Answer 25

Greater storage capacity, low cost per GB

Question 26

How is the tape read/written? What does that mean?

Answer 26

Sequently, read/written from the beginning to the end, very slow process

Question 27

What is the limit of magnetic tape?

Answer 27

185 terabytes

Question 28

Pit

Answer 28

An indication on the surface of an optical disk, used to represent data

Question 29

Land

Answer 29

The raised surface between the pits on an optical disk

Question 30

Compact disk (CD)

Answer 30

An early, but still used optical medium

Question 31

Digital Versatile disk (DVD)

Answer 31

A later, higher capacity optical medium

Question 32

Blu-ray disk

Answer 32

A modern, extremely high capacity optical medium

Question 33

How much data can CDs hold?

Answer 33

700 MB

Question 34

How much data can DVDs hold?

Answer 34

4.7 GB

Question 35

How much data can Blu-rays hold?

Answer 35

25 GB

Question 36

Name the extension for a read only disk

Answer 36

t (CD-ROM)

Question 37

Name the extension for a write once disk

Answer 37

-R (CD-R)

Question 38

Name the extension for a rewritable disk

Answer 38

-RW (CD-RW)

Question 39

How is the data from the disk read?

Answer 39

By a tiny laser shining at the surface of the disk detecting tiny changes in reflection

Question 40

What are the disks made out of?

Answer 40

Aluminium

Question 41

List the different storage types from Slowest to Fastest (5)

Answer 41

Optical disk - Memory Card - Magnetic Tape - HDD - SSD

Question 42

List the different storage types from Cheapest to Priciest (5)

Answer 42

Magnetic Tape - Optical disc - HDD - Memory card - SSD

Question 43

List the different storage types from lowest average capacity to highest average capacity

Answer 43

Optical Disk - Memory cards - SSD - HDD - Magnetic Tape