Computer Hardware
Which is LEAST likely to interfere with upgrading to a newer DOS Version?

Existing backup files
None of these
ROM BIOS
Video controller
Compressed drives

ANSWER DOWNLOAD EXAMIANS APP

Computer Hardware
A brownout is defined as:

has nothing to do with electricity
complete power out lasting a few minutes
alternating power out, power on lasting a few minutes
a slightly elevated voltage lasting from seconds to minutes or more
a slightly decreased voltage lasting from seconds to minutes or more

ANSWER DOWNLOAD EXAMIANS APP