Banking Computers IBPS RRBs Officer Exam Scale-I II CWE 12-09-2015

  • question_answer DOS is a[n) ______.

    A)  single-user but multiple programming

    B)  multi- user operating system

    C)  multi- user and multi-programming

    D)  open source operating system

    E)  single-user operating system

    Correct Answer: E

    Solution :

    [e] DOS is the most popular single user operating system. These operating systems are mainly used on personal computers. In DOS, we cannot run another program at the same time. For this we will have to close the first program, only then we would be able to work on another program or software.

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