A. With varying speed
B. Each head has its own speed
C. With constant speed
D. Only the disk plates rotate not the heads

A. Every track contains data
B. The middle track
C. Each alternating track of the hard disk
D. The top and bottom track

A. Thermal energy
B. Punctures and depressions
C. Scratching the surface
D. Magnetizing

A. Flatbed and drum
B. Light pen and drum
C. Pen and drum
D. Flat and bed

A. LASER and Inkjet
B. Dot Matrix and Daisy
C. Impact and Non Impact
D. Composite and RGB

A. Hard disk
B. Floppy disk
C. Magnetic Tapes
D. CD

A. LASER
B. Photographic film
C. Magnet
D. CDs

A. CD Rom
B. Magnetic disk
C. RAM
D. LASER holographic storage

A. Write once read many
B. Writeable on ROM
C. Writer of Random Memory
D. Writer of Read only Memory

A. CD ROMS
B. CDW
C. CD-R
D. CD Writer