Q71. Regular care and maintenance of computer is required
Q72. Regular maintenance of the system includes
Q73. Precaution to be taken while cleaning the computer components are :
Q74. We should never spray any liquid cleaner directly on
Q75. Disk defragmentation help to
Q76. System Performance can be increased by
Q77. __________parts of the computer system should be cleaned properly.
Q78. DOS stands for ________________
Q79. Which of the following is Microsoft Product?
Q80. _____________ operating system is an example of an interactive operating system.