Operating System (OS)
Which of the following is false about disk when compared to main memory?

lower price per bit
None of these
non-volatile
faster
longer storage capacity

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Operating System (OS)
The term 'polling' in a computer means a process by which a computer system

multiplexes the inputs and updates the memory accordingly
decides correct alternative by analysing several ones
detects/corrects errors
None of these
inquires to see if a terminal has any transaction to send

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Operating System (OS)
The advantage of a command processor running only built-in commands is:

users can create system programs and run them as commands
the command set being common across different hardware configurations
the processing is much faster than would other-wise be the case when user defined commands are used
flexibility to the users in running lists of commands by simply collecting them in named batch command files
None of these

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