Q334. What do you understand by the term DOS:

Вариант ответа 1 - a) Downloading the system program from the Internet

Вариант ответа 2 - b) Downloading operating system

Вариант ответа 3 - c) The master control program of the computer which helps the computer to manage the files

Вариант ответа 4 - d) The programs which helps computer to check the various peripheral devices

Вариант ответа 5 - e) None of The Above