Storage Unit

Question 1

Number of bytes in a KB

Answer 1

1000 or 1024

Question 2

Description of a kilobyte(KB)

Answer 2

1000 or 1024bytes

Question 3

Characteristics of solid state storage

Answer 3

Fairly large capacity ever increasing
Very fast access speed
Very portable
Very durable
Reliable, although with limited read/write times
Expensive per GB

Question 4

Description of a nibble

Answer 4

4 bits

e.g. 1000, 1111, 01010

Question 5

Description of a petabyte(PB)

Answer 5

1000 or 1024TB

Question 6

Types of storage media

Answer 6

Optical
Solid state
Magnetic

Question 7

Number bits in a byte

Answer 7

8

Question 8

Description of a byte

Answer 8

8 bits/2 nibbles

e.g.10101110, 00010110

Question 9

Description of magnetic storage

Answer 9

The surface of a disk is magnetised

The electromagnetic current is read as 1s and 0s

Question 10

Examples of optical storage

Answer 10

Blu ray
DVD
CD

Question 11

Description of solid state storage

Answer 11

Device is made of logic gates(NAND gates)

Data is held electronically i.e no moving parts

Question 12

Description of a metabyte(MB)

Answer 12

1000 or 1024KB

Question 13

Characteristics of magnetic storage

Answer 13

Large capacities available
Relatively cheap cost per GB
Fairly fast read/write speeds
Prone to damage(contains moving parts)- best used for internal(HDD)or backup storage rather than portable
Fairly durable(can be read from/written to many times)

Question 14

Description of a terabyte(TB)

Answer 14

1000 or 1024GB

Question 15

Examples of magnetic storage

Answer 15

Hard disk drive
Magnetic tape
Floppy disk(now obselete)