Write a brief note on Shell
Write a brief note on ‘Shell’?
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A shell is an interactive user interface to operating system services which permits a user to enter commands as character strings or via a graphical user interface. The shell transforms them to system calls to the Operating System or forks off a process to execute the command. System call results and other info from the Operating System are presented to the user via an interactive interface. Usually employed shells are ‘sh,csh,ks’ and as on.
Write differences between the Output and Input device.
Give brief introduction of the term ‘access time’? Briefly describe its various kinds of timings in a hard disk drive?
Give a brief explanation of the term Overflow.
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What is NLX? What are the different types of Form Factors of Power Supply?
Leverage or Gearing Ratios: Such ratios comprise the Long Term Debt to Equity Ratio, Total Debt to Equity Ratio, Interest Coverage Ratio. Here, the interest coverage ratio is also termed “number of times interest earned”.
Power supply fan is not working and it emits a lot of sound. What will the probable cause?
Explain what do you understand by the term Motherboard?
Give a brief explanation of the term screen painter and menu painter.
Give a brief explanation of the term domains and data element.
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