Operating System (OS)
The function of Dir/W is

Show only file name and directory name
All of the listed here
Shows only directory
Show all details of file

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

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

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