What is the IP address that is assigned to the network loopback interface?

Group of answer choices

$255\mathrm{.}255\mathrm{.}255\mathrm{.}255$

$10\mathrm{.}0\mathrm{.}0\mathrm{.}0$

$0\mathrm{.}0\mathrm{.}0\mathrm{.}0$

$127\mathrm{.}0\mathrm{.}0\mathrm{.}1$