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    b.  Which type of memory is volatile and loses its data when the computer is turned off?

                             (i)  ROM                                         (ii)  RAM
                            (iii)  Hard Disk                                 (iv)  CD-ROM

                        c.  Which of the following is not a type of ROM?
                             (i)  PROM                                        (ii)  EPROM

                            (iii)  DRAM                                      (iv)  EEPROM

                        d.  What is the capacity of a standard CD?

                             (i)  700 MB                                      (ii)  4.7 GB

                            (iii)  25 GB                                     (iv)  128 GB

                        e.  Find the optical storage device that uses a blue/violet laser light to read and write data.

                             (i)  CD                                          (ii)  DVD

                            (iii)  Blu-ray Disc                              (iv)  Pen Drive

                     2.  Fill in the blanks using the words from the help box.

                                                Primary, 1024 ExaBytes, Flash, Nibble

                        a.   1 ZettaByte is equal to ____________.

                        b.  A combination of four bits makes up a ____________.

                        c.  An SSD uses the technique of ____________ memory to store data.

                        d.  ____________ memory  is  the  main  memory  of the  computer,  which holds data  and
                            instructions that the CPU is currently working on.

                     3.  Answer in one or two words.

                        a.  What is the non-volatile memory in a computer called?                          ____________

                        b.  Where can a pen drive be connected to transfer data?                           ____________
                        c.  What term is used for online storage that allows file sharing and syncing?  ____________

                        d.  What is another term for a binary digit?                                       ____________

                        e.  Which type of DVD allows only one-time recording?                              ____________

                     4.  Think and answer.

                        a.  How does primary memory differ from secondary memory?
                            ______________________________________________________________________________

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                                                                                                    Computer Memory   13

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