2. Sample Papers
  3. 5th Class
  4. Computers Science

5th Class Computers Science Sample Paper Computer Science Olympiad Model Test Paper-7

  • question_answer
    PSTN is an extremely large network that is covering to use internet technologies. PSTN stands for:

    A) Private Switched Telecom Network

    B) Public Switched Telecom Network

    C) Public Switched Telephone Network

    D) All of these

    E) None of these

    Correct Answer: C

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