Which of the following is a correct definition of volatile memory?

1. It loses its contents at high temperatures
2. It is to be kept in airtight boxes
3. It loses its contents on failure of power supply
4. It does not lose its contents on failure of power supply

One thousand bytes represent a …………… .

1. Megabyte
2. Gigabyte
3. Kilobyte
4. None of the above

The concentric circles on the floppy disk are further divided into :

1. Tracks
2. Sectors
3. Cylinders
4. None of the above

Which of the following storage devices can be used for storing large backup data ?

1. Floppy disks
2. Hard disk
3. Magnetic tapes
4. None of the above