A DVD is relatively portable but I suspect you mean a DVD player? In which case it's only portable if it's a portable DVD player.
False, They can use optical storage discs.
Optical Discs
no
Portable means easy to carry round, Optical means uses light to make it work. So optical media could be portable.
An optical drive is an input and output device. It reads data from optical discs like CDs and DVDs (input) and writes data to these discs (output).
Yes
Yes
A optical drive is essentially what you put CD's DVD's and install discs into.
cd, dvd, and vcd
During the 1990's.
Optical Discs
DVDs (Digital Versatile Discs) are discs that are used to watch movies, and television shows, you need a DVD player to watch it, most of the DVD players require television to connect them, however portable DVDs do exist.