Question

Convert the IP address whose hexadecimal address 0xD31EC251 to dotted decimal notation. Your answer must be exact. Use the format 255.255.255.255 and DO NOT enter any spaces.

Answer 1

211.30.194.81

Step-by-step explanation:

IP addresses use 8 bits for each of the four digits in decimal notation, or 2 digits in hexadecimal notation.

Hexadecimal numbers use digits from 0 to 9 and A to F, for decimal numbers in the range from 0 to 15.

To convert from hexadecimal to decimal, we need to know that each digit will have the value:
`n*16^(p)`

Where n is the hexadecimal number to convert, and p is the digit position.

For example, for D3:

`3*16^(0) + D*16^(1) = \\3*16^(0) + 13*16^(1) =\\3*1 + 13*16 =\\3+208=\\211`

Splitting the given address (0xD31EC251) in pairs:

1st digit: D3 = 211 decimal

2nd digit: 1E = 30 decimal

3rd digit: C2 = 194 decimal

4th digit: 51 = 81 decimal

Joining all the values using the dotted notation:

211.30.194.81