In the following questions about which models have the specified attributes or properties use one or more of the following abbreviations for your answers: DFA, NFA, e-NFA, 2 DFA, PDA, TM, All or None a. Which models have a finite input alphabet?
b. Which models have an infinite input alphabet?
c. Which models have an additional alphabet besides the input alphabet?
d. Which models have a read only tape head?

answer is:

a). backstage view

explanation:

backstage view is the area where files and data about them is managed— creating, saving, printing, sending to others, inspecting for hidden metadata or personal information, and setting options. so in this way we can add many things to our document swiftly.

i hope you get the idea.

answeroperating system;

it most likely is charging, however when using a hot spot, it drains straight through battery life.