Public Private IP address

An IP address

• is in a format of text, such as, macau anglican college, Taipa, Macau SAR

• used to identify a device on internet

• has 3 versions, IP v4, v5, v6

• IP stands for International Protocol

a public address

• is registered in internet service provider

• is not necessary for accessing internet

• can be used on more than one device

• is a unlimited resource, meaning there are more address than ever needed

A private IP address

• is also registered on internet just like public address

• is needed because there are not enough public IP addresses

• is not obtained from ISP, but from your own router.

• can be used to access internet directly just like public address

private IP address

• must be translated before accessing internet

• can be used to access internet directly

• is given by your own preference

why do not we apply more public IP addresses from Internet Service Provider for each devices used at home. write one reason

what is name of the service that a router can provide to translate IP address. (3 letters)

which IP addresses below look like private address

• 127 . 56 . 124 . 78

• 190 . 68 . 0 . 10

• 192 . 68 . 0 . 02

• 192 . 68 . 0 . 5

differences between public IP address and private IP address

select the all the correct answer

• public IP address is unique

• private IP address is unique

• many same private IP addresses on networks

• both public and private IP address can be used to access internet directly

• Private IP address is assigned by ISP

Public IP address is free to have

• False

• True

why private IP address is more secure than public IP address