What OC level is primarily used as a regional ISP backbone, and occasionally by very large hospitals, universities, or other major enterprises??

Answer the following statements true (T) or false (F)

1. The CPU understands binary instructions. 2. A bit that is turned off is represented by the value -1. 3. The main reason to use secondary storage is to hold data for long periods of time, even when the power to the computer is turned off. 4. RAM is volatile memory which means it cannot be erased.

The command to start Emacs is:

a: start Emacs b: emacs c: run Emacs d: open Emacs e: none of the above