Capacity

Question 1

Bit

Answer 1

smallest unit of data that we can store is called a binary digit, or a bit for short.
Can be represented as either a 0 or 1

Question 2

Grouping bits

Answer 2

Because bits are so small, they can be grouped as:
Nibble (4bits)
Byte (8bits)

Question 3

Data units

Answer 3

Kilobyte : 1000 bytes 
Megabytes : 1000 kb 
Gigabyte (GB) (1000 MB).
Terabyte (TB) (1000 GB).
Petabyte (1,000 TB).

Question 4

How do you calculate required capacity

Answer 4

Required capacity = number of files × size of a single file