In an ethernet network, a(n) data transmission is one that can transmit data in both directions at the same time.

In my email i got a message it says a quick message and in message details on who its from its says nicole and under nicole is [email protected] -

Best laptops for college [$100-$500 range]?

Description: write function lastfirst() that takes one argument—a list of strings of the format "lastname, firstname" —and returns a list consisting of two lists: (a) a list of all the last names (b) a list of all the first names