In which year the first operating system was developed
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1) What is a TSR?
2) Which command of DOS is used to compare two floppy disks?
3) Format command is used to
4) You suspect that your automatic modem dialer is not working correctly. Which of the following commands will manually dial the number 123-4567?
5) The deleted file in MS-DOS can be recovered if you use the command mention below immediately, the command is: