Upon connecting to a wi-fi network, you're redirected to a login screen and a request to accept terms of service before being connected.
what is this an example of?

captive portal

Explanation:

Captive portal -

It is a web page , which is opened along side the web browser which get displayed on to the fresh connected users of the Wi-Fi network , just before it gets the assurance to use the resources of the network , is known as captive portal .

Generally captive portal requires authentication or payment for access the internet resource .

Hence , from the question information , the example shown in the question is about captive portal .

these  signals travel  down a part of the neuron called the axon, which is like a wire that carries the  signal  to othernerve  cells. on average a  nerve  cell sends a  signal  at about 50 meters per second, which is over 100  miles  an hour!

it is much more convenient for the consumer to order something online, rather than going to a store. it saves them time and money for them, especially if that item is not accessed easily.