Storage and Storage Devices

Question 1

Examples of Magnetic devices:

Answer 1

HDD (Hard Disk Drive)
Magnetic tape

Question 2

Examples of Solid State devices:

Answer 2

SD card
USB stick

Question 3

Optical devices:

Answer 3

CD
DVD
Blu-ray

Question 4

Bit

Answer 4

Smallest unit. Has value of 0 or 1

Question 5

Nibble

Answer 5

Made up of 4 bits

Question 6

Byte

Answer 6

Made up of 8 bits and represents one character on the keyboard

Question 7

Kilobytes

Answer 7

Contains 1000 bytes

Question 8

Megabytes

Answer 8

Contains 1,000,000 bytes

Question 9

Gigabytes

Answer 9

Contains 1,000,000,000 bytes

Question 10

Rounded capacity for USB stick?

Answer 10

20GB

Question 11

Rounded capacity for SD card?

Answer 11

20GB

Question 12

Rounded capacity for CD?

Answer 12

500MB

Question 13

Rounded capacity for DVD?

Answer 13

5GB

Question 14

Rounded capacity for Bluray?

Answer 14

50GB

Question 15

Rounded capacity for HDD?

Answer 15

500GB

Question 16

Typical size for Text file?

Answer 16

20KB

Question 17

Typical size for Image file?

Answer 17

100KB

Question 18

Typical size for Sound?

Answer 18

5MB

Question 19

Typical size for Video?

Answer 19

50MB

Question 20

1 Byte is 1 character in a sentence, including spaces.

Question 21

Kilobytes needed to store an image using 8-bit and 24-bit colour depth?

Answer 21

Formula for 8-bit colour depth:

Width × Height
_________________
1024

Formula for 24-bit colour depth:

Width × Height × 3
_________________
1024