A normal CD drive is an input device. A CD-R or CD-RW drive would do both input and output.
input
it is input
I would say that a CD-ROM is a form of input, as it is "read only memory" and the data on it can only be read, but not written to. If you're talking about CD-R/CD+R drives, then those would be considered both input and output, as it can read from a CD, and writes to CD.
a CD is an output device that can be used as a storage or input device
yes
It is neither, CD DVD and hard disk is STORAGE not input or output.
A CD or DVD drive is a media device. Data is usually read from it, but data can also be sent to it if it has writing capabilities.
A CD is a storage device.
A CD is a storage device.
yes
That's an output device, because your getting information off the computer and onto the CD.