Hey there!
The operating system that functions from typing commands is called a Command–Line–Based OS. Examples of this type of OS include UNIX and MS–DOS made by Microsoft. These features white or green text on a black screen and were primarily meant for professionals who had to learn lots of commands rather than everyday users.
Hope this helped you out! :-)
Use filler words like ummmm, like, so, kinda, or such. Faltering on her words, forgetting things, or not saying things with confidence wouldn't help either. Also, do not loose eye contact with the people even if you only occasionally look up, it makes you look nervous and like you don't know what you're talking about.
Depends, but I'd say false.