Question $7$

Statelessr&ss can cause major issues with many sites and thus PHP has two tools for overcoming this issue. They are:

$($A$)$ cookies

$($B$)$ sessions

Which has client$-$side files that contain user information

Which ends when a user closes their browser

Which needs to be started before it can be used

Which allows a maximum size is $4KB$

Which has a unique ID to retrieve stored values

Which is only read in the domain that issues it