Units of Information

Question 1

Bits, bytes and nibbles

Answer 1

A bit is either a 1 or a 0 binary value. A byte is 8 bits, like an 8 bit binary number. A nibble is just half a byte, so 4 bits.

Question 2

Kilobyte, megabyte, gigabyte, terabyte

Answer 2

Simplest conversions.
Easiest way to remember is by factor of 10.
kB 10³
MB 10^6
GB 10^9
TB 10^12
Just remember kilo is 10³, so 1000, and to just increase indices by 3 for each one.

Question 3

Kibibyte, mebibyte, gibibyte, tebibyte

Answer 3

More complicated.
Easiest way to remember is by factor of 2^10.
KiB 2^10
MiB 2^20
GiB 2^30
TiB 2^40

Question 4

Amount of values that can be represented

Answer 4

It might ask you, how many values can a certain amount of bits represent. As a bit is a binary number 1 or 0, each bit can represent 2 values. So just do 2^however many bits it gives you. E.g 16 bits can represent 2^16, = 65,536