Question

State true or false.
1. The surface of each platter in a hard disk is highly polished and is coated with magnetic oxide.
2. Hard disk is a secondary storage device.
3. Only the top surface of the hard disk is used to store information.
4. Disk access time of hard disk is measured in microseconds.
5. CD-ROM uses a highly polished magnetic oxide coating.
6. The common storage size of CD-ROM is 700 MB.
7. The colour of the laser beam used in CD-ROM is red.
8. A CD-R once recorded cannot be rewritten.
9. Erasable optical disks have magnetic spots through which information is accessed.
10. If you choose a lower video quality, it is possible to store several hours video on a DVD.
11. The Blu-ray format offers less storage capacity than a standard DVD.
12. Blu-ray disc gets its name from the colour of its coating.
13. Flash memory devices are connected to the serial port of the computer.
14. A USB flash drive has no moving parts.
15. Memory cards can be used in mobile phones. ​

Answer 1

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Answer 2

Answer:

1. true 2.true 3.idk 4.false 5 false 6true 7 true 8 true 9idk 10idk 11 false 12 true 13 false 14 true 15 true

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